Cannot start Plasma

No it is not the same, as the OP and I cannot start plasma at all.

I for one didn’t have any snapshot to go back to so I’m left without a plasmashell for the foreseeable future.

What I did between the last normal boot and this one is a system update of about 2 months. And perhaps this mistake of mine, typing export LC_ALL=C; mkvtoolnix-gui so that mkvtoolnix-gui would start. That line was part of a .desktop file workaround so that the app would function but this time I typed it directly into the terminal and now plasmashell last lines before failing is

Detected locale “C” with character encoding “ANSI_X3.4-1968”, which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to “C.UTF-8” instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
LaunchProcess: failed to execvp:
/usr/lib/qt6/QtWebEngineProcess
LaunchProcess: failed to execvp:
/usr/lib/qt6/QtWebEngineProcess
[12731:12731:1222/194042.945258:FATAL:zygote_host_impl_linux.cc(201)] Check failed: . : No such file or directory (2)
Trace/breakpoint trap (core dumped)

locale outputs :

locale: Cannot set LC_ALL to default locale: No such file or directory
LANG=en_GB.UTF-8
LC_CTYPE=“en_GB.UTF-8”
LC_NUMERIC=en_GB.UTF-8
LC_TIME=en_GB.UTF-8
LC_COLLATE=“en_GB.UTF-8”
LC_MONETARY=en_GB.UTF-8
LC_MESSAGES=“en_GB.UTF-8”
LC_PAPER=en_GB.UTF-8
LC_NAME=en_GB.UTF-8
LC_ADDRESS=en_GB.UTF-8
LC_TELEPHONE=en_GB.UTF-8
LC_MEASUREMENT=fr_BE.UTF-8
LC_IDENTIFICATION=en_GB.UTF-8
LC_ALL=

And after executing export LC_ALL=C.UTF-8

LANG=en_GB.UTF-8
LC_CTYPE=“C.UTF-8”
LC_NUMERIC=“C.UTF-8”
LC_TIME=“C.UTF-8”
LC_COLLATE=“C.UTF-8”
LC_MONETARY=“C.UTF-8”
LC_MESSAGES=“C.UTF-8”
LC_PAPER=“C.UTF-8”
LC_NAME=“C.UTF-8”
LC_ADDRESS=“C.UTF-8”
LC_TELEPHONE=“C.UTF-8”
LC_MEASUREMENT=“C.UTF-8”
LC_IDENTIFICATION=“C.UTF-8”
LC_ALL=C.UTF-8

I don’t understand anything about any of this. Please help me. Thank you.

Your post has been moved to a dedicated thread where it might attract more attention specific to your needs.


Note that so-called hijacking of another thread to gain attention to your own possibly related issue is generally not encouraged.


As an infrequent forum user, please take some time to familiarise yourself with Forum requirements; in particular, the many ways to use the forum to your benefit:

The Update Announcements should be checked frequently for important update related information.

These announcements contain a Known Issues and Solutions section and should generally be checked before posting a request for support.

Output of the following command formatted according to forum requirements (see links above) may be useful for those wishing to help:

inxi --admin --verbosity=8 --filter --no-host --width

Be prepared to provide more information and outputs from other commands when asked.

Regards.

1 Like

Just to be clear - your plasma doesn’t start after rebooting and leaving all locales as they were?

This looks as if the locales your system tries to use haven’t been genrerated.
Check your enabled locales, please post output of:

$ grep -v '^#' /etc/locale.gen

Oh ok. I was about to write a dedicated one.

I can’t find the known issues and solutions in the update announcements or from the search.

The output you suggested:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "",
        LC_ALL = (unset),
        LC_CTYPE = (unset),
        LC_NUMERIC = "en_GB.UTF-8",
        LC_COLLATE = (unset),
        LC_TIME = "en_GB.UTF-8",
        LC_MESSAGES = (unset),
        LC_MONETARY = "en_GB.UTF-8",
        LC_ADDRESS = "en_GB.UTF-8",
        LC_IDENTIFICATION = "en_GB.UTF-8",
        LC_MEASUREMENT = "fr_BE.UTF-8",
        LC_PAPER = "en_GB.UTF-8",
        LC_TELEPHONE = "en_GB.UTF-8",
        LC_NAME = "en_GB.UTF-8",
        LANG = "en_GB.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to a fallback locale ("en_GB.UTF-8").
System:
  Kernel: 6.6.65-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.6-x86_64
    root=UUID=eb0d23f0-aaa6-4fef-85bf-901cf7f71528 rw quiet apparmor=1
    security=apparmor resume=UUID=884ef1c4-a102-4d61-8451-a5460a4c26c0
    udev.log_priority=3
  Desktop: KDE Plasma v: 6.2.4 tk: Qt v: N/A info: frameworks v: 6.8.0
    wm: kwin_x11 with: krunner vt: 2 dm: SDDM Distro: Manjaro base: Arch Linux
Machine:
  Type: Laptop System: Notebook product: N24_25BU v: N/A
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: Notebook model: N24_25BU serial: <superuser required>
    uuid: <superuser required> UEFI-[Legacy]: American Megatrends v: 5.12
    date: 10/11/2016
Battery:
  ID-1: BAT0 charge: 0% condition: N/A/45.3 Wh volts: N/A min: 15.1
    model: Notebook BAT type: Li-ion serial: <filter> status: not charging
Memory:
  System RAM: total: 16 GiB available: 15.39 GiB used: 3.09 GiB (20.1%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 32 GiB slots: 2 modules: 1 EC: None
    max-module-size: 16 GiB note: est.
  Device-1: ChannelA-DIMM0 type: no module installed
  Device-2: ChannelB-DIMM0 type: DDR4 detail: synchronous size: 16 GiB speed:
    spec: 2400 MT/s actual: 2133 MT/s volts: note: check curr: 1 min: 1 max: 1
    width (bits): data: 64 total: 64 manufacturer: Crucial
    part-no: BLS16G4S240FSD.16FBD serial: <filter>
PCI Slots:
  Permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: Intel Core i5-7200U bits: 64 type: MT MCP arch: Amber/Kaby Lake
    note: check gen: core 7 level: v3 note: check built: 2017 process: Intel 14nm
    family: 6 model-id: 0x8E (142) stepping: 9 microcode: 0xF6
  Topology: cpus: 1x dies: 1 clusters: 2 cores: 2 threads: 4 tpc: 2
    smt: enabled cache: L1: 128 KiB desc: d-2x32 KiB; i-2x32 KiB L2: 512 KiB
    desc: 2x256 KiB L3: 3 MiB desc: 1x3 MiB
  Speed (MHz): avg: 1000 min/max: 400/3100 scaling: driver: intel_pstate
    governor: powersave cores: 1: 1000 2: 1000 3: 1000 4: 1000 bogomips: 21607
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 bmi1 bmi2 bts clflush
    clflushopt cmov constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64
    dtherm dts ept ept_ad erms est f16c flexpriority flush_l1d fma fpu
    fsgsbase fxsr ht hwp hwp_act_window hwp_epp hwp_notify ibpb ibrs ida
    intel_pt invpcid lahf_lm lm mca mce md_clear mmx monitor movbe mpx msr
    mtrr nonstop_tsc nopl nx pae pat pbe pcid pclmulqdq pdcm pdpe1gb pebs pge
    pln pni popcnt pse pse36 pti pts rdrand rdseed rdtscp rep_good sdbg sep
    sgx smap smep ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2
    tpr_shadow tsc tsc_adjust tsc_deadline_timer vme vmx vnmi vpid x2apic
    xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: gather_data_sampling mitigation: Microcode
  Type: itlb_multihit status: KVM: VMX disabled
  Type: l1tf mitigation: PTE Inversion; VMX: conditional cache flushes, SMT
    vulnerable
  Type: mds mitigation: Clear CPU buffers; SMT vulnerable
  Type: meltdown mitigation: PTI
  Type: mmio_stale_data mitigation: Clear CPU buffers; SMT vulnerable
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed mitigation: IBRS
  Type: spec_rstack_overflow status: Not affected
  Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via
    prctl
  Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer
    sanitization
  Type: spectre_v2 mitigation: IBRS; IBPB: conditional; STIBP: conditional;
    RSB filling; PBRSB-eIBRS: Not affected; BHI: Not affected
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel HD Graphics 620 vendor: CLEVO/KAPOK driver: i915 v: kernel
    arch: Gen-9.5 process: Intel 14nm built: 2016-20 ports: active: DP-1
    off: eDP-1 empty: HDMI-A-1 bus-ID: 00:02.0 chip-ID: 8086:5916
    class-ID: 0300
  Device-2: Chicony USB2.0 Camera driver: uvcvideo type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-6:3 chip-ID: 04f2:b59e
    class-ID: 0e02 serial: <filter>
  Display: x11 server: X.Org v: 21.1.14 with: Xwayland v: 24.1.4
    compositor: kwin_x11 driver: X: loaded: intel dri: i965 gpu: i915
    display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1200 s-dpi: 96 s-size: 508x317mm (20.00x12.48")
    s-diag: 599mm (23.57")
  Monitor-1: DP-1 mapped: DP1 pos: primary model: Samsung SyncMaster
    serial: <filter> built: 2009 res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2 chroma:
    red: x: 0.639 y: 0.329 green: x: 0.298 y: 0.600 blue: x: 0.149 y: 0.059
    white: x: 0.314 y: 0.329 size: 520x320mm (20.47x12.6") diag: 611mm (24.1")
    ratio: 16:10 modes: 1920x1200, 1600x1200, 1280x1024, 1280x960, 1024x768,
    800x600, 640x480
  Monitor-2: eDP-1 mapped: eDP1 note: disabled model: LG Display 0x04a7
    built: 2015 res: 1920x1200 dpi: 142 gamma: 1.2 chroma: red: x: 0.580 y: 0.349
    green: x: 0.341 y: 0.561 blue: x: 0.153 y: 0.125 white: x: 0.314 y: 0.329
    size: 344x194mm (13.54x7.64") diag: 395mm (15.5") ratio: 16:9
    modes: 1920x1080
  API: EGL v: 1.5 hw: drv: intel iris platforms: device: 0 drv: iris
    device: 1 drv: swrast gbm: drv: iris surfaceless: drv: iris x11: drv: iris
    inactive: wayland
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 24.2.8-arch1.1
    glx-v: 1.4 direct-render: yes renderer: Mesa Intel HD Graphics 620 (KBL GT2)
    device-ID: 8086:5916 memory: 7.51 GiB unified: yes
  API: Vulkan v: 1.4.303 layers: 4 device: 0 type: integrated-gpu name: Intel
    HD Graphics 620 (KBL GT2) driver: N/A device-ID: 8086:5916
    surfaces: xcb,xlib
Audio:
  Device-1: Intel Sunrise Point-LP HD Audio vendor: CLEVO/KAPOK
    driver: snd_hda_intel v: kernel alternate: snd_soc_skl,snd_soc_avs
    bus-ID: 00:1f.3 chip-ID: 8086:9d71 class-ID: 0403
  API: ALSA v: k6.6.65-1-MANJARO status: kernel-api with: aoss
    type: oss-emulator tools: alsactl,alsamixer,amixer
  Server-1: JACK v: 1.9.22 status: off tools: N/A
  Server-2: PipeWire v: 1.2.7 status: off with: pipewire-media-session
    status: active tools: pw-cli
  Server-3: PulseAudio v: 17.0-43-g3e2bb status: active with:
    1: pulseaudio-alsa type: plugin 2: pulseaudio-jack type: module
    tools: pacat,pactl
Network:
  Device-1: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel pcie: gen: 1
    speed: 2.5 GT/s lanes: 1 bus-ID: 02:00.0 chip-ID: 8086:24fd class-ID: 0280
  IF: wlp2s0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: dynamic noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: global
  IP v6: <filter> type: noprefixroute scope: link
  Device-2: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: CLEVO/KAPOK driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s
    lanes: 1 port: e000 bus-ID: 03:00.1 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp3s0f1 state: up speed: 100 Mbps duplex: full mac: <filter>
  Info: services: NetworkManager, sshd, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: Intel Bluetooth wireless interface driver: btusb v: 0.8 type: USB
    rev: 2.0 speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-5:2 chip-ID: 8087:0a2b
    class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 7.5 TiB used: 6.25 TiB (83.2%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Samsung model: SSD 840 EVO 250GB
    size: 232.89 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: BB6Q scheme: MBR
  ID-2: /dev/sdb maj-min: 8:16 vendor: Western Digital
    model: WD80EDAZ-11TA3A0 size: 7.28 TiB block-size: physical: 4096 B
    logical: 512 B type: USB rev: 3.1 spd: 5 Gb/s lanes: 1 mode: 3.2 gen-1x1
    tech: HDD rpm: 5400 serial: <filter> fw-rev: 1030 scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 224.43 GiB size: 219.85 GiB (97.96%)
    used: 139.66 GiB (63.5%) fs: ext4 dev: /dev/sda1 maj-min: 8:1 label: N/A
    uuid: eb0d23f0-aaa6-4fef-85bf-901cf7f71528
  ID-2: /run/media/manuel/External raw-size: 7.28 TiB size: 7.22 TiB (99.20%)
    used: 6.11 TiB (84.6%) fs: ext4 dev: /dev/sdb1 maj-min: 8:17 label: External
    uuid: cd747baa-76b3-4cfd-ae3c-12b6b565715a
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 8.45 GiB used: 107.2 MiB (1.2%)
    priority: -2 dev: /dev/sda2 maj-min: 8:2 label: N/A
    uuid: 884ef1c4-a102-4d61-8451-a5460a4c26c0
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 12 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Device-1: 1-5:2 info: Intel Bluetooth wireless interface type: bluetooth
    driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
    mode: 1.1 power: 100mA chip-ID: 8087:0a2b class-ID: e001
  Device-2: 1-6:3 info: Chicony USB2.0 Camera type: video driver: uvcvideo
    interfaces: 2 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0
    power: 500mA chip-ID: 04f2:b59e class-ID: 0e02 serial: <filter>
  Device-3: 1-7:4 info: Logitech HID-Compliant Keyboard type: keyboard,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 1.1 speed: 1.5 Mb/s (183 KiB/s)
    lanes: 1 mode: 1.0 power: 100mA chip-ID: 046d:c316 class-ID: 0300
  Device-4: 1-8:5 info: Holtek E-Signal LUOM G10 Mechanical Gaming Mouse
    type: mouse,HID driver: hid-generic,usbhid interfaces: 3 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 04d9:a09f class-ID: 0300
  Hub-2: 2-0:1 info: super-speed hub ports: 6 rev: 3.0
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 chip-ID: 1d6b:0003
    class-ID: 0900
  Device-1: 2-1:2 info: Western Digital Elements Desktop (WDBWLG)
    type: mass storage driver: usb-storage interfaces: 1 rev: 3.1
    speed: 5 Gb/s (596.0 MiB/s) lanes: 1 mode: 3.2 gen-1x1 power: 8mA
    chip-ID: 1058:25a3 class-ID: 0806 serial: <filter>
  Hub-3: 3-0:1 info: hi-speed hub with single TT ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-4: 4-0:1 info: super-speed hub ports: 2 rev: 3.1
    speed: 10 Gb/s (1.16 GiB/s) lanes: 1 mode: 3.2 gen-2x1 chip-ID: 1d6b:0003
    class-ID: 0900
Sensors:
  System Temperatures: cpu: 49.0 C pch: 39.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Repos:
  Packages: pm: pacman pkgs: 1898 libs: 507 tools: pamac,yay pm: flatpak
    pkgs: 0
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: https://mirror.bouwhuis.network/manjaro/stable/$repo/$arch
    2: https://mirror.vinehost.net/manjaro/stable/$repo/$arch
    3: http://manjaro.mirrors.uk2.net/stable/$repo/$arch
    4: https://mirrors.dotsrc.org/manjaro/stable/$repo/$arch
    5: https://mirrors.aliyun.com/manjaro/stable/$repo/$arch
    6: https://opencolo.mm.fcix.net/manjaro/stable/$repo/$arch
    7: https://mirrors.sonic.net/manjaro/stable/$repo/$arch
    8: https://mirror.aarnet.edu.au/pub/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 205
  1: cpu: 20.3% command: firefox pid: 1743 mem: 587.4 MiB (3.7%)
  2: cpu: 6.3% command: firefox pid: 2258 mem: 256.7 MiB (1.6%)
  3: cpu: 3.5% command: firefox pid: 3007 mem: 238.4 MiB (1.5%)
  4: cpu: 3.1% command: Xorg pid: 875 mem: 89.5 MiB (0.5%)
  5: cpu: 3.0% command: kwin_x11 pid: 1215 mem: 229.3 MiB (1.4%)
  Memory top: 5 of 205
  1: mem: 587.4 MiB (3.7%) command: firefox pid: 1743 cpu: 20.3%
  2: mem: 323.4 MiB (2.0%) command: baloo_file pid: 1168 cpu: 1.9%
  3: mem: 263.8 MiB (1.6%) command: krunner pid: 3304 cpu: 0.2%
  4: mem: 256.7 MiB (1.6%) command: firefox pid: 2258 cpu: 6.3%
  5: mem: 238.4 MiB (1.5%) command: firefox pid: 3007 cpu: 3.5%
Info:
  Processes: 205 Power: uptime: 29m states: freeze,mem,disk suspend: deep
    avail: s2idle wakeups: 0 hibernate: platform avail: shutdown, reboot,
    suspend, test_resume image: 6.14 GiB services: org_kde_powerdevil,upowerd
    Init: systemd v: 256 default: graphical tool: systemctl
  Compilers: clang: 18.1.8 gcc: 14.2.1 Shell: Bash v: 5.2.37
    running-in: konsole inxi: 3.3.36

Thanks for the patience.

Exactly. The export LC_ALL=C; mkvtoolnix-gui line was only executed once, after the update I think. It might not be the reason for plasma not loading, I really can’t tell. But I rebooted several times, including into wayland to test, and all works but plasmashell.
The full plasma fail is this :

Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
kf.svg: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.svg: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.plasma.core: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.plasma.core: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
KPackageStructure of KPluginMetaData(pluginId:"Emulator.Spectrum.Audio", fileName: "/home/manuel/.local/share/plasma/plasmoids/Emulator.Spectrum.Audio/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"org.kde.MinimalMusic.P6", fileName: "/home/manuel/.local/share/plasma/plasmoids/org.kde.MinimalMusic.P6/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Bix.Plasma.Player", fileName: "/home/manuel/.local/share/plasma/plasmoids/Bix.Plasma.Player/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"MusicMini", fileName: "/home/manuel/.local/share/plasma/plasmoids/MusicMini/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Circle.Music.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Circle.Music.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Aligned.Music.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Aligned.Music.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Audio.Wave.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Audio.Wave.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"com.github.configurable_button", fileName: "/home/manuel/.local/share/plasma/plasmoids/com.github.configurable_button/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.simplemenu", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.simplemenu/metadata.json") does not match requested format "Plasma/Applet"
kf.svg: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Toolbox not loading, toolbox package is either invalid or disabled.
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
org.kde.plasma.kicker: Entry is not valid "applications:org.bunkus.mkvtoolnix-gui.desktop" 0x55bd8e8de5b0
org.kde.plasma.kicker: Entry is not valid "applications:org.bunkus.mkvtoolnix-gui.desktop" 0x55bd8e8de5b0
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
qt.dbus.integration: Could not connect "org.cups.cupsd.Notifier" to PrinterFinishingsChanged(QString, QString, QString, uint, QString, bool) : 
error getting max keyboard brightness via dbus QDBusError("org.freedesktop.DBus.Error.UnknownObject", "No such object path '/org/kde/Solid/PowerManagement/Actions/KeyboardBrightnessControl'")
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
LaunchProcess: failed to execvp:
/usr/lib/qt6/QtWebEngineProcess
LaunchProcess: failed to execvp:
/usr/lib/qt6/QtWebEngineProcess
[7335:7335:1222/210843.602755:FATAL:zygote_host_impl_linux.cc(201)] Check failed: . : No such file or directory (2)
Trace/breakpoint trap (core dumped)

$ grep -v ‘^#’ /etc/locale.gen

outputs

en_GB.UTF-8 UTF-8

Is that how it’s supposed to look?

It shows en_GB.UTF8 locale to be the only active (and probably generated) one.
Is this also configured for your user?

$ cat .config/plasma-localerc

Does starting plasma work, if you login on tty and use:

$ export LANG=en_GB.UTF8

Followed by for either wayland session:

$ startplasma-wayland

ox X11 session

$ startplacma-x11

There is a Known Issues and Solutions section in every Update announcement thread.

If I look to the main forum menu at the left and follow the Announcements link I can easily find Update announcements for Unstable, Testing and Stable branches.

And look :scream_cat: you were even given a link to Update Announcements in the post.

All that is required is some effort on your part.

Regards.

I don’t understand what you ask about the user configuration but :

> cat .config/plasma-localerc
 [Formats]
LANG=en_GB.UTF-8
LC_MEASUREMENT=fr_BE.UTF-8
LC_MONETARY=en_GB.UTF-8
LC_NUMERIC=en_GB.UTF-8
LC_TIME=en_GB.UTF-8
useDetailed=true

As to the ttys, I tried with then without the export you asked and startplasma-x11 gives

$DISPLAY is not set or cannot connect to the X server

Whereas startplasma-wayland starts the correct splash screen then gives a black screen with the correct themed cursor.
When I tried another tty, startplasma-wayland gets stuck at >_… while the other tty relaunches the splash screen…

So is it really a matter of locales? Can the line I input really be responsible? I thought at first it couldn’t be persistent after a boot.

Oh ok I understand now. Is there a way to know which of the updates are the ones that may have caused the trouble? So far I have to guess by dates and how long I think I went without an update.

The best way is to read through them and determine for yourself if any may apply to your issue. So, you could guess by reading the actual content. Usually, if you find something that seems to describe an issue you are experiencing, that might be a good place to start.

Regards.

I have read them and nothing within 3 months really fits, unfortunately. Which is about the time of my last update. But once this is solved, if it really was the update and not my input line, I will add it to the known solved issues. But again, hopefully I’ll know under which date/update I should add it.

Well, here we probably have the root of the problem.

Three months is a very long time between updates for a rolling release model distribution such as Manjaro.

Much has likely changed during that time, which can make diagnosing an issue difficult, much less finding a solution.

More regular updates are typically required. You may likely be in an unsupported state currently. Let’s see what others may suggest.

Providing system information as previously requested will likely be helpful to others wishing to help.

If you cannot boot currently, you could also boot to a Manjaro Installer ISO (Live environment) and provide command output from its terminal.

Regards.


Additionally, from the output you’ve given, it seems that you might have installed incompatible widgets/plasmoids; so this might be worth investigating further; the sweet-mars theme seems an obvious candidate for removal;

kf.svg: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.plasma.core: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
KPackageStructure of KPluginMetaData(pluginId:"Emulator.Spectrum.Audio", fileName: "/home/manuel/.local/share/plasma/plasmoids/Emulator.Spectrum.Audio/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"org.kde.MinimalMusic.P6", fileName: "/home/manuel/.local/share/plasma/plasmoids/org.kde.MinimalMusic.P6/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Bix.Plasma.Player", fileName: "/home/manuel/.local/share/plasma/plasmoids/Bix.Plasma.Player/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"MusicMini", fileName: "/home/manuel/.local/share/plasma/plasmoids/MusicMini/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Circle.Music.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Circle.Music.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Aligned.Music.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Aligned.Music.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"Audio.Wave.Widget", fileName: "/home/manuel/.local/share/plasma/plasmoids/Audio.Wave.Widget/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"com.github.configurable_button", fileName: "/home/manuel/.local/share/plasma/plasmoids/com.github.configurable_button/metadata.json") does not match requested format "Plasma/Applet"
KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.simplemenu", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.simplemenu/metadata.json") does not match requested format "Plasma/Applet"
kf.svg: The theme "Sweet-mars" uses the legacy metadata.desktop. Consider contacting the author and asking them update it to use the newer JSON format.
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Toolbox not loading, toolbox package is either invalid or disabled.
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
qt.dbus.integration: Could not connect "org.cups.cupsd.Notifier" to PrinterFinishingsChanged(QString, QString, QString, uint, QString, bool) : 
error getting max keyboard brightness via dbus QDBusError("org.freedesktop.DBus.Error.UnknownObject", "No such object path '/org/kde/Solid/PowerManagement/Actions/KeyboardBrightnessControl'")
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched 

Whether removing incompatible cruft will solve your issues, I can’t say, but it seems likely they could be contributing.

The following portion clearly shows a problem with the mkvtoolnix desktop file, so I’d likely reverse those edits you made, to start with:

org.kde.plasma.kicker: Entry is not valid "applications:org.bunkus.mkvtoolnix-gui.desktop" 0x55bd8e8de5b0
org.kde.plasma.kicker: Entry is not valid "applications:org.bunkus.mkvtoolnix-gui.desktop" 0x55bd8e8de5b0

Regards.


Please, understand: You are not being asked to add anything to Known Issues and Solutions – you are being reminded to always check them – as it is often possible that others have already encountered an issue, and that it might already be listed under Known Issues and Solutions.

3 Likes

Well spotted by @soundofthunder … so without wasting any more time:

Fixing stuff

Looking at issues faced moving on from Plasma 5 to Plasma 6 is a good way to get a handle on this - clean it up, go back to default, reset Plasma settings (rename/backup) an

Updating

If you’re using a rolling distribution, then it’s expected that you are logging in and using the machine on a regular basis… more than once per week.

  • You’re expected to install your updates, read the update thread, check your pacnew’s.

Foolproof recovery:

  • We can’t really support a 3 month update cycle - my suggestion is to evaluate how long it would take you to reinstall, importing settings from your backups.

  • My last FRESH install took me 6 minutes

  • Within 3 hours I had it 98% set up.

  • The other 2% was ironed out within another 2-3 days.

Snapshots and Backups:

  • Hourly - if you have storage, then up to 24 hours is nice.
  • Daily - up to a week
  • Weekly - up to a month
  • Monthly - I never rolled back that far, so up to you.

If you regularly take breaks of a few months here and there, then I’d suggest that there are better answers than rolling…

LC_MEASUREMENT uses a locale which is not enabled and therefore probably not present on your system.

I dunno - might be a red herring.
As other members and probably you yourself have noted: there are some other error messages shown for totally unrelated problems.

1 Like

I probably set that one manually at some point as I’m indeed in Belgium. I still fail to begin to understand why certain programs need to (temporarily?) change the locale as shown here from a human language to C to run. I’ve had this old workaround (not mine) line

Exec=$(export LC_ALL=C; mkvtoolnix-gui) %F`

in the aforementioned mkvtoolnix-gui.desktop so that the program would launch. And so in this attempt to fix plasma, I renamed it to no avail. Hence the org.kde.plasma.kicker: Entry is not valid "applications:org.bunkus.mkvtoolnix-gui.desktop" 0x55bd8e8de5b0 red herring. Sorry I forgot about it.

But the locale thing, even if it may not be the reason for plasmashell failing, is concerning still as now I notice that the locale warning is more universal than previously thought

[manuel@manuel-desktop ~]$ kate
[manuel@manuel-desktop ~]$ kate
[manuel@manuel-desktop ~]$ kate --version
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
kate 24.08.3
[manuel@manuel-desktop ~]$ plasmashell --version
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
plasmashell 6.2.4
[manuel@manuel-desktop ~]$ man --version
man: can't set the locale; make sure $LC_* and $LANG are correct
man 2.13.0

noting that all these programs launch normally despite the warning, including plasmashell which launches, loads everything, then dies after those last lines ... Trace/breakpoint trap (core dumped) are displayed.

At any rate, I will follow the mods’ advice, I had no idea rolling releases were supposed to be updated this often, I thought it was optional. I will do a fresh install and investigate these snapshot solutions and adapt to the new “lifestyle”. I’ve been lucky for years, even the year old update jump to plasma 6 had been smooth enough. I had even swapped this SDD from another machine to this laptop seamlessly, I guess a fresh install was way overdue.

Thank you all for your help and patience.

Edit: oh btw it’s not a “known issue” but the post before mine in “Ask for help with Manjaro KDE” had the same issue as I and he printed

Dec 03 09:41:43 systemd[3335]: Starting KDE Plasma Workspace...
Dec 03 09:41:43 systemd[3335]: Started KDE Plasma Workspace.
Dec 03 09:41:43 plasmashell[10778]: KPackageStructure of KPluginMetaData(pluginId:"com.samirgaire10.Google-Gemini", fileName: "/home/kris/.local/share/plasma/plasmoids/com.samirgaire10.Google-Gemini/metadata.json") does not match requested format "Plasma/Applet"
Dec 03 09:41:43 plasmashell[10778]: KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.simplemenu", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.simplemenu/metadata.json") does not match requested format "Plasma/Applet"
Dec 03 09:41:43 plasmashell[10778]: KPackageStructure of KPluginMetaData(pluginId:"org.kde.merkuro.contact", fileName: "/usr/share/plasma/plasmoids/org.kde.merkuro.contact/metadata.json") does not match requested format "Plasma/Applet"
Dec 03 09:41:43 systemd[3335]: Starting Track hardware statistics...
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_cpu" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_cpu.so"
Dec 03 09:41:43 plasmashell[10778]: kf.plasma.quick: Applet preload policy set to 1
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_disk" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_disk.so"
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
                                    file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Dec 03 09:41:43 plasmashell[10778]: Toolbox not loading, toolbox package is either invalid or disabled.
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: qml: false
Dec 03 09:41:43 plasmashell[10778]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
                                    file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Dec 03 09:41:43 plasmashell[10778]: Toolbox not loading, toolbox package is either invalid or disabled.
Dec 03 09:41:43 ksystemstats[10806]: Found unsupported GPU: /sys/devices/pci0000:00/0000:00:02.0/drm/card1
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_gpu" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_gpu.so"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_lmsensors" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_lmsensors.so"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_memory" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_memory.so"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9548] audit: op="statistics" interface="wlp0s20f3" ifindex=2 args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9582] audit: op="statistics" interface="C8:2A:DD:B6:95:DA" args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_network" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_network.so"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_osinfo" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_osinfo.so"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9614] audit: op="statistics" interface="0C:C4:13:1A:F0:68" args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_power" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_power.so"
Dec 03 09:41:43 ksystemstats[10806]: Loaded plugin "ksystemstats_plugin_pressure" from file "/usr/lib/qt6/plugins/ksystemstats/ksystemstats_plugin_pressure.so"
Dec 03 09:41:43 systemd[3335]: Started Track hardware statistics.
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9647] audit: op="statistics" interface="enp60s0u2u4" ifindex=3 args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9921] audit: op="statistics" interface="C8:2A:DD:B6:95:DA" args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9954] audit: op="statistics" interface="enp60s0u2u4" ifindex=3 args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:43 NetworkManager[1416]: <info>  [1733218903.9990] audit: op="statistics" interface="enp60s0u2u4" ifindex=3 args="500" pid=10806 uid=1000 result="success"
Dec 03 09:41:44 plasmashell[10778]: qml: false
Dec 03 09:41:44 plasmashell[10778]: qml: false
Dec 03 09:41:44 plasmashell[10778]: qml: false
Dec 03 09:41:44 plasmashell[10778]: qml: false
Dec 03 09:41:44 plasmashell[10778]: qml: false
Dec 03 09:41:44 plasmashell[10778]: file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
                                    file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Dec 03 09:41:44 plasmashell[10778]: Toolbox not loading, toolbox package is either invalid or disabled.
Dec 03 09:41:44 plasmashell[10778]: qrc:/qt/qml/org/kde/ksysguard/faces/ExtendedLegend.qml:58: TypeError: Cannot read property 'sensors' of null
Dec 03 09:41:44 appimagelauncherd[3353]: Directories to watch disappeared, unintegrating AppImages formerly found in there
Dec 03 09:41:45 plasmashell[10778]: file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
Dec 03 09:41:45 plasmashell[10778]: file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
Dec 03 09:41:45 plasmashell[10778]: qt.dbus.integration: Could not connect "org.cups.cupsd.Notifier" to PrinterFinishingsChanged(QString, QString, QString, uint, QString, bool) :
Dec 03 09:41:45 plasmashell[10778]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
Dec 03 09:41:51 plasmashell[10778]: QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
Dec 03 09:41:51 plasmashell[10778]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
Dec 03 09:41:51 plasmashell[10778]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
Dec 03 09:41:51 plasmashell[10778]: qt.gui.imageio: libpng warning: iCCP: known incorrect sRGB profile
Dec 03 09:41:51 plasmashell[10907]: LaunchProcess: failed to execvp:
Dec 03 09:41:51 plasmashell[10907]: /usr/lib/qt6/QtWebEngineProcess
Dec 03 09:41:51 kernel: audit: type=1400 audit(1733218911.700:203): apparmor="DENIED" operation="exec" class="file" info="no new privs" error=-1 profile="plasmashell" name="/usr/lib/qt6/QtWebEngineProcess" pid=10907 comm="plasmashell" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0 target="unc>
Dec 03 09:41:51 plasmashell[10908]: LaunchProcess: failed to execvp:
Dec 03 09:41:51 plasmashell[10908]: /usr/lib/qt6/QtWebEngineProcess
Dec 03 09:41:51 kernel: audit: type=1400 audit(1733218911.707:204): apparmor="DENIED" operation="exec" class="file" info="no new privs" error=-1 profile="plasmashell" name="/usr/lib/qt6/QtWebEngineProcess" pid=10908 comm="plasmashell" requested_mask="x" denied_mask="x" fsuid=1000 ouid=0 target="unc>
Dec 03 09:41:51 plasmashell[10778]: [10778:10778:1203/094151.716232:FATAL:zygote_host_impl_linux.cc(201)] Check failed: . : No such file or directory (2)
Dec 03 09:41:51 kernel: traps: plasmashell[10778] trap int3 ip:7b1ecddba904 sp:7fff2536f4a0 error:0 in libQt6WebEngineCore.so.6.8.0[45ba904,7b1ec98b7000+958b000]
Dec 03 09:41:51 systemd-coredump[10909]: Process 10778 (plasmashell) of user 1000 terminated abnormally with signal 5/TRAP, processing...
Dec 03 09:41:51 systemd[1]: Started Process Core Dump (PID 10909/UID 0).
Dec 03 09:41:54 systemd-coredump[10910]: [🡕] Process 10778 (plasmashell) of user 1000 dumped core.
                                         
                                         Stack trace of thread 10778:
                                         #0  0x00007b1ecddba904 n/a (libQt6WebEngineCore.so.6 + 0x45ba904)
                                         #1  0x00007b1ecddbb5b4 n/a (libQt6WebEngineCore.so.6 + 0x45bb5b4)
                                         #2  0x00007b1ecddbcd06 n/a (libQt6WebEngineCore.so.6 + 0x45bcd06)
                                         #3  0x00007b1ecddbce23 n/a (libQt6WebEngineCore.so.6 + 0x45bce23)
                                         #4  0x00007b1ecddbf54a n/a (libQt6WebEngineCore.so.6 + 0x45bf54a)
                                         #5  0x00007b1ecce89347 n/a (libQt6WebEngineCore.so.6 + 0x3689347)
                                         #6  0x00007b1ecd655f0a n/a (libQt6WebEngineCore.so.6 + 0x3e55f0a)
                                         #7  0x00007b1ecc2ad97a n/a (libQt6WebEngineCore.so.6 + 0x2aad97a)
                                         #8  0x00007b1ecc2556e5 n/a (libQt6WebEngineCore.so.6 + 0x2a556e5)
                                         #9  0x00007b1ecd6586d8 n/a (libQt6WebEngineCore.so.6 + 0x3e586d8)
                                         #10 0x00007b1ec9a39c58 n/a (libQt6WebEngineCore.so.6 + 0x239c58)
                                         #11 0x00007b1ec9a3ba44 n/a (libQt6WebEngineCore.so.6 + 0x23ba44)
                                         #12 0x00007b1f4aa0ada4 _ZN26QQuickWebEngineViewPrivateC1Ev (libQt6WebEngineQuick.so.6 + 0x46da4)
                                         #13 0x00007b1f4aa0ebf0 _ZN19QQuickWebEngineViewC1EP10QQuickItem (libQt6WebEngineQuick.so.6 + 0x4abf0)
                                         #14 0x00007b1f4aa35ca7 n/a (libQt6WebEngineQuick.so.6 + 0x71ca7)
                                         #15 0x00007b1fd414ab24 _ZNK8QQmlType6createEPPvm (libQt6Qml.so.6 + 0x34ab24)
                                         #16 0x00007b1fd414abd4 _ZNK8QQmlType18createWithQQmlDataEv (libQt6Qml.so.6 + 0x34abd4)
                                         #17 0x00007b1fd410a54f _ZN17QQmlObjectCreator14createInstanceEiP7QObjectb (libQt6Qml.so.6 + 0x30a54f)
                                         #18 0x00007b1fd410b855 _ZN17QQmlObjectCreator18setPropertyBindingEPK16QQmlPropertyDataPKN3QV412CompiledData7BindingE (libQt6Qml.so.6 + 0x30b855)
                                         #19 0x00007b1fd410e4ae _ZN17QQmlObjectCreator13setupBindingsE6QFlagsINS_11BindingModeEE (libQt6Qml.so.6 + 0x30e4ae)
                                         #20 0x00007b1fd411549f _ZN17QQmlObjectCreator16populateInstanceEiP7QObjectS1_PK16QQmlPropertyDataPKN3QV412CompiledData7BindingE (libQt6Qml.so.6 + 0x31549f)
                                         #21 0x00007b1fd410a08c _ZN17QQmlObjectCreator14createInstanceEiP7QObjectb (libQt6Qml.so.6 + 0x30a08c)
                                         #22 0x00007b1fd410b855 _ZN17QQmlObjectCreator18setPropertyBindingEPK16QQmlPropertyDataPKN3QV412CompiledData7BindingE (libQt6Qml.so.6 + 0x30b855)
                                         #23 0x00007b1fd410e4ae _ZN17QQmlObjectCreator13setupBindingsE6QFlagsINS_11BindingModeEE (libQt6Qml.so.6 + 0x30e4ae)
                                         #24 0x00007b1fd411549f _ZN17QQmlObjectCreator16populateInstanceEiP7QObjectS1_PK16QQmlPropertyDataPKN3QV412CompiledData7BindingE (libQt6Qml.so.6 + 0x31549f)
                                         #25 0x00007b1fd410a08c _ZN17QQmlObjectCreator14createInstanceEiP7QObjectb (libQt6Qml.so.6 + 0x30a08c)
                                         #26 0x00007b1fd4117e74 n/a (libQt6Qml.so.6 + 0x317e74)
                                         #27 0x00007b1fd409c737 _ZN20QQmlComponentPrivate11beginCreateE14QQmlRefPointerI15QQmlContextDataE (libQt6Qml.so.6 + 0x29c737)
                                         #28 0x00007b1fd409ccae _ZN13QQmlComponent11beginCreateEP11QQmlContext (libQt6Qml.so.6 + 0x29ccae)
                                         #29 0x00007b1fd5831876 _ZN11PlasmaQuick15SharedQmlEngine25createObjectFromComponentEP13QQmlComponentP11QQmlContextRK5QHashI7QString8QVariantE (libPlasmaQuick.so.6 + 0x4c876)
                                         #30 0x00007b1fd580f3ef n/a (libPlasmaQuick.so.6 + 0x2a3ef)
                                         #31 0x00007b1fd580f4d1 n/a (libPlasmaQuick.so.6 + 0x2a4d1)
                                         #32 0x00007b1fd2da348a _ZN7QObject5eventEP6QEvent (libQt6Core.so.6 + 0x1a348a)
                                         #33 0x00007b1fd4efe31a _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt6Widgets.so.6 + 0xfe31a)
                                         #34 0x00007b1fd2d585a8 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt6Core.so.6 + 0x1585a8)
                                         #35 0x00007b1fd2d59035 _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt6Core.so.6 + 0x159035)
                                         #36 0x00007b1fd2fc23fc n/a (libQt6Core.so.6 + 0x3c23fc)
                                         #37 0x00007b1fd18b2559 n/a (libglib-2.0.so.0 + 0x5d559)
                                         #38 0x00007b1fd1915157 n/a (libglib-2.0.so.0 + 0xc0157)
                                         #39 0x00007b1fd18b1a55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                                         #40 0x00007b1fd2fbf71d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3bf71d)
                                         #41 0x00007b1fd2d64566 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x164566)
                                         #42 0x00007b1fd2d59a2f _ZN16QCoreApplication4execEv (libQt6Core.so.6 + 0x159a2f)
                                         #43 0x00005b7396b2b17f n/a (plasmashell + 0x2817f)
                                         #44 0x00007b1fd2634e08 n/a (libc.so.6 + 0x25e08)
                                         #45 0x00007b1fd2634ecc __libc_start_main (libc.so.6 + 0x25ecc)
                                         #46 0x00005b7396b2b695 n/a (plasmashell + 0x28695)
                                         
                                         Stack trace of thread 10794:
                                         #0  0x00007b1fd271abb0 ppoll (libc.so.6 + 0x10bbb0)
                                         #1  0x00007b1fd1915227 n/a (libglib-2.0.so.0 + 0xc0227)
                                         #2  0x00007b1fd18b1a55 g_main_context_iteration (libglib-2.0.so.0 + 0x5ca55)
                                         #3  0x00007b1fd2fbf71d _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt6Core.so.6 + 0x3bf71d)
                                         #4  0x00007b1fd2d64566 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt6Core.so.6 + 0x164566)
                                         #5  0x00007b1fd2e571d2 _ZN7QThread3runEv (libQt6Core.so.6 + 0x2571d2)
                                         #6  0x00007b1fd2ed840f n/a (libQt6Core.so.6 + 0x2d840f)
                                         #7  0x00007b1fd26a339d n/a (libc.so.6 + 0x9439d)
                                         #8  0x00007b1fd272849c n/a (libc.so.6 + 0x11949c)
                                         
Dec 03 09:41:54 systemd[1]: systemd-coredump@2-10909-0.service: Deactivated successfully.
Dec 03 09:41:54 systemd[1]: systemd-coredump@2-10909-0.service: Consumed 2.319s CPU time, 1.1G memory peak.
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Main process exited, code=dumped, status=5/TRAP
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Failed with result 'core-dump'.
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Consumed 5.254s CPU time, 911.7M memory peak.
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Scheduled restart job, restart counter is at 3.
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Start request repeated too quickly.
Dec 03 09:41:54 systemd[3335]: plasma-plasmashell.service: Failed with result 'core-dump'.
Dec 03 09:41:54 systemd[3335]: Failed to start KDE Plasma Workspace.
Dec 03 09:41:55 systemd[1]: systemd-localed.service: Deactivated successfully.
Dec 03 09:42:06 systemd[3335]: Starting KRunner...
Dec 03 09:42:06 systemd[3335]: Started KRunner.

and there’s not much in there about locales, so I assume that it was indeed a red herring. His solution was removing Apparmor but I don’t have it installed.

Edit 2: I repaired the plasmashell by removing /home/manuel/.local/share/plasma. It now launches to this output

Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
KPackageStructure of KPluginMetaData(pluginId:"org.kde.plasma.simplemenu", fileName: "/usr/share/plasma/plasmoids/org.kde.plasma.simplemenu/metadata.json") does not match requested format "Plasma/Applet"
kf.plasma.core: Applet invalid: Cannot find a package for "com.samirgaire10.Deepl-plasma6"
kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:178:25: QML FolderViewDropArea (parent or ancestor of QQuickLayoutAttached): Binding loop detected for property "minimumWidth":
file:///usr/share/plasma/plasmoids/org.kde.desktopcontainment/contents/ui/main.qml:201:9
Toolbox not loading, toolbox package is either invalid or disabled.
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
file:///usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray/contents/ui/main.qml:50:9: QML KSortFilterProxyModel: Binding loop detected for property "sourceModel"
qt.dbus.integration: Could not connect "org.cups.cupsd.Notifier" to PrinterFinishingsChanged(QString, QString, QString, uint, QString, bool) : 
kf.plasma.quick: File name empty!
kf.plasma.quick: error when loading applet "com.samirgaire10.Deepl-plasma6" QList("Error loading Applet: package com.samirgaire10.Deepl-plasma6 does not exist.")
error getting max keyboard brightness via dbus QDBusError("org.freedesktop.DBus.Error.UnknownObject", "No such object path '/org/kde/Solid/PowerManagement/Actions/KeyboardBrightnessControl'")
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
QFont::setPointSizeF: Point size <= 0 (0.000000), must be greater than 0
Detected locale "C" with character encoding "ANSI_X3.4-1968", which is not UTF-8.
Qt depends on a UTF-8 locale, and has switched to "C.UTF-8" instead.
If this causes problems, reconfigure your locale. See the locale(1) manual
for more information.
kameleon supported false
kameleon enabled true
file:///usr/share/plasma/plasmoids/org.kde.plasma.brightness/contents/ui/PopupDialog.qml:93: TypeError: Value is null and could not be converted to an object

I have no idea what any of this means but yes I guess my plasma config was too old then. Hopefully someone in KDE can spot the problem with these outputs. I’ll go the fresh install route regardless. Thanks again.

Edit 3: I narrowed it down to /home/manuel/.local/share/plasma/plasmoids/com.samirgaire10.Deepl-plasma6. Is that precise enough to mark this as solved?

Even if it may be unrelated,

you should correct this by removing the ‘#’ in front of the corresponding lines (with fr_BE.UTF-8 in it) in /etc/locale.gen, so it will be build later on.

And then run

locale-gen

to build the locale. And afterward:

locale --all-locales   

should show it. ARCH-wiki Locale

:footprints:

2 Likes

Oh yes that solved the locale warnings. Thanks :smiley:

[manuel@manuel-desktop ~]$ locale -a
C
C.utf8
en_GB.utf8
es_AR.utf8
fr_BE.utf8
POSIX

Was typing export LC_ALL=C the culprit then? Or is that a benign/non-persistent line?

It’s only persisting for the duration of the shell where the export was issued and only affects programs started from that very shell.

2 Likes

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