The KDE bar (menu, systray, window-list etc) freezes

cefk · 20 September 2023 08:26

Some system info:
Manjaro (Kernel 6.1.53-1-MANJARO) / Plasma (5.27.8) / kwin / wayland
CPU: Intel i7-6700K (8) @ 4.200GHz
GPU: NVIDIA GeForce GTX 1060 6GB

The problem:
The KDE-bar, that contains the KDE-menu, the program shortcuts, systray, clock, etc., freezes up and stays that way, until I do a reboot.

It happens often, so I’m not happy with having to reboot a lot.

It seems to be more likely to happen, when I use Virtualbox (have a VM open).

When I notice, that it happened again, it’s usually, because I’m trying to look at the clock inside the KDE bar … and then the clock in the VM shows a different time, than the clock on the host system (clock on the host-system shows the time, the KDE bar froze … clock on the VM shows the actual current time).

Or, I’m finished with the VM and close it, but the indicator that the window is still open (the item in the window-list-section of the KDE bar is still there and highlighted).

So, the whole bar freezes left to right …
It used to be so bad, that I couldn’t even click on it (had to use a global hotkey to access yakuake and do issue a # shutdown -r now).

But, these days, I can get the KDE-menu to open, so I can at least click the reboot-button.

I think, the problem was already there, when I was still on X11 instead of wayland, but I’m not 100% sure, if it’s the same problem, because I have no clue, what the actual cause of the problem may be.

Maybe also worth mentioning:
When using Virtualbox and activating the 3D-checkbox (so that the VM can access the 3D-capabilities of the graphics card), the VM often suddenly freezes (completely … not just something inside the VM, but the whole VM needs to be hard reset to fix the problem … temporarily fix, I mean).

So, I’ve since deactivated that 3D-checkbox (impact on the CPU is noticable and sad, but it’s better than having to hard reset a VM every half hour or so). But, the problem with the KDE bar of the host-system freezing is still there … that doesn’t seem to be influenced by that setting, at all.

I think it has even happened without virtualbox being in use, at one time … but I might be mistaken … not sure. So, maybe don’t get overly fixated on virtualbox, when thinking about this problem.

Sorry, that I’m this vague, but the error happens without me noticing until a while after the fact. So, I’m not sure, how to troubleshoot or collect more useful information about it.

I hope, someone out there has an idea, what this might be.
Thanks in advance for reading all this

Mirdarthos · 20 September 2023 08:48

Hi @cefk,

In order for us, or anyone for that matter, to be able to provide assistance, more information is necessary. To that end, please see:

Please also note and heed: Forum Rules - Manjaro

Hope you manage!

Tip:

To provide terminal output, copy the text you wish to share, and paste it here, surrounded by three (3) backticks, a.k.a grave accents. Like this:

```
pasted text
```

Or three (3) tilde signs, like this:

~~~
pasted text
~~~

This will just cause it to be rendered like this:

Portaest sed
elementum
cursus nisl nisi
hendrerit ac quis
sit
adipiscing
tortor sit leo commodo.

Instead of like this:

Portaest sed elementum cursus nisl nisi hendrerit ac quis sit adipiscing tortor sit leo commodo.

Alternatively, paste the text you wish to format as terminal output, select all pasted text, and click the </> button on the taskbar. This will indent the whole pasted section with one TAB, causing it to render the same way as described above.

Thereby improving legibility and making it much easier for those trying to be of assistance.

Additionally

If your language isn’t English, please prepend any and all terminal commands with LC_ALL=C. For example:

LC_ALL=C bluetoothctl

This will just cause the terminal output to be in English, making it easier to understand and debug.

Phew, withy all that said, a workaround might be to simply restart KDE instead of the whole computer… To try, next time it happens, run the following in the terminal:

kquitapp5 plasmashell && kstart5 plasmashell > /dev/null 2>&1 & disown

This will restart KDE, but keep all your applications running.

But, as I said, that is only a workaround, not a solution. We need to find out why it’s happening. The cause, not the symptoms.

When it happens again, run the following in the terminal and provide the output heree, as described above:

journalctl --boot=0 --priority=warning..error

Or, if you’ve restarted since it happened, the command needs to be adjusted slightly:

journalctl --boot=-1 --priority=warning..error

Edit:

It might also simply be a case of Virtualbox running out of resources. I don’t know. But we might be able to tell you more with the information I requested above.

cefk · 21 September 2023 06:55

No matter how I issue that command (with or without LC_ALL … with or without sudo … with or without being root at the time) it’s the same result … even if I set boot=-1:

$ LC_ALL=C journalctl --boot=0 --priority=warning..error
Failed to parse log level range warning..error

$ LC_ALL=C sudo journalctl --boot=0 --priority=warning..error
Failed to parse log level range warning..error

# LC_ALL=C journalctl --boot=0 --priority=warning..error
Failed to parse log level range warning..error

This time, when it happened, the programs, that were running at the time were the ones, you can still see in the screenshot, I attached (see further explanation, below).

Screenshot (I was cleaning up the system … moving files, that had piled up in downloads-folder … and deleting some, too … I wasn’t even close to anything system-relevant, so it shouldn’t have been a problem):

VLC (watched a show, while cleaning up)
2 Dolphins (I mentioned the system-cleanup … and a Gwenview for looking at old screenshots, that had also piled up in there)
Notice, that I had already closed all of the windows, mentioned in number 2 and I also already have your reply opened up in Brave browser, which does not appear in the active window list (it froze, before I opened Brave).
Notice that the screenshot has been taken at about 08:20am … the clock still shows 08:12am.

Also notice, that Virtualbox wasn’t even open, this time … so it doesn’t seem to be related to Virtualbox, after all.

The first times, this happened, the complete KDE-bar (left to right) basically was like clicking a screenshot (became completely unresponsive … nothing could be clicked, etc). Now, I can still click e.g. the Brave-icon (the one at very bottom left corner of my screenshot) and Brave will actually open … even if it doesn’t show up in the KDE-bar, anymore.

I hope, this helps you narrow it down a little, even though the journalctl-command didn’t yield much info.

I’ll send this reply, now … and then I’m gonna try the workaround, you suggested and update this reply (I don’t wanna risk losing what I already typed) … just a sec.

UPDATE:
I’ve tried the workaround and it actually worked … Brave appeared in the Window-List and there was an actual Dolphin (that seems to have opened up, because it wasn’t shown, before using the workaround … even when I used ALT+TAB as my own “workaround” to cycle through the open windows).

Also: Thank you for trying to help … I’m gonna create an alias for that workaround, right away.

cefk · 22 September 2023 06:03

# Output of inxi (as instructed in the howto):

System:
  Kernel: 6.1.53-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
    clocksource: tsc available: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.1-x86_64
    root=UUID=nonyabus-ines-snon-yabu-sinessnonyab rw quiet
    cryptdevice=UUID=nonyabus-ines-snon-yabu-sinessnonyab:luks-usinessn-onya-busi-ness-nonyabusines
    root=/dev/mapper/luks-nonyabus-ines-snon-yabu-sinessnonyab
    resume=/dev/mapper/luks-nonyabus-ines-snon-yabu-sinessnonyab
    udev.log_priority=3 intel_iommu=on vfio-pci.ids=10de:1c03,10de:10f1
    nvidia_drm.modeset=1
  Desktop: KDE Plasma v: 5.27.8 tk: Qt v: 5.15.10 wm: kwin_wayland vt: 1
    dm: SDDM Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Desktop Mobo: ASRock model: Z170 Gaming K6 serial: <superuser required>
    UEFI: American Megatrends v: P7.50 date: 10/18/2018
CPU:
  Info: model: Intel Core i7-6700K bits: 64 type: MT MCP arch: Skylake-S
    gen: core 6 level: v3 note: check built: 2015 process: Intel 14nm family: 6
    model-id: 0x5E (94) stepping: 3 microcode: 0xF0
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 256 KiB desc: d-4x32 KiB; i-4x32 KiB L2: 1024 KiB desc: 4x256 KiB
    L3: 8 MiB desc: 1x8 MiB
  Speed (MHz): avg: 800 min/max: 800/4200 scaling: driver: intel_pstate
    governor: powersave cores: 1: 800 2: 800 3: 800 4: 800 5: 800 6: 800 7: 800
    8: 800 bogomips: 64026
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
  Vulnerabilities:
  Type: gather_data_sampling status: Vulnerable: No 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: 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
  Type: srbds mitigation: Microcode
  Type: tsx_async_abort mitigation: TSX disabled
Graphics:
  Device-1: NVIDIA GP106 [GeForce GTX 1060 6GB] vendor: ASUSTeK driver: nvidia
    v: 535.104.05 alternate: nouveau,nvidia_drm non-free: 535.xx+
    status: current (as of 2023-08) arch: Pascal code: GP10x process: TSMC 16nm
    built: 2016-21 pcie: gen: 3 speed: 8 GT/s lanes: 16 ports: active: none
    off: DP-1 empty: DP-2, DVI-D-1, HDMI-A-1, HDMI-A-2 bus-ID: 01:00.0
    chip-ID: 10de:1c03 class-ID: 0300
  Display: wayland server: X.org v: 1.21.1.8 with: Xwayland v: 23.2.0
    compositor: kwin_wayland driver: X: loaded: nvidia gpu: nvidia display-ID: 0
  Monitor-1: DP-1 res: 2560x1440 size: N/A modes: N/A
  API: OpenGL v: 4.6.0 NVIDIA 535.104.05 renderer: NVIDIA GeForce GTX 1060
    6GB/PCIe/SSE2 direct-render: Yes
Audio:
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASRock
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170
    class-ID: 0403
  Device-2: NVIDIA GP106 High Definition Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 16
    bus-ID: 01:00.1 chip-ID: 10de:10f1 class-ID: 0403
  Device-3: EGO SYStems iM/ONE driver: snd-usb-audio type: USB rev: 2.0
    speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-8.3.1:7 chip-ID: 0a92:e021
    class-ID: 0103 serial: <filter>
  API: ALSA v: k6.1.53-1-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: 0.3.80 status: active with: 1: pipewire-pulse
    status: active 2: pipewire-media-session status: active 3: pipewire-alsa
    type: plugin tools: pactl,pw-cat,pw-cli
Network:
  Device-1: Qualcomm Atheros Killer E2400 Gigabit Ethernet vendor: ASRock
    driver: alx v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1 port: c000
    bus-ID: 06:00.0 chip-ID: 1969:e0a1 class-ID: 0200
  IF: enp6s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
RAID:
  Supported mdraid levels: raid1
  Device-1: md126 maj-min: 9:126 type: mdraid level: mirror status: active
    size: 3.64 TiB
  Info: report: 2/2 UU blocks: 3906783232 chunk-size: N/A super-blocks: 1.2
  Components: Online:
  0: sdb1 maj-min: 8:17 size: 3.64 TiB
  1: sde1 maj-min: 8:65 size: 3.64 TiB
  Device-2: md127 maj-min: 9:127 type: mdraid level: mirror status: active
    size: 7.28 TiB
  Info: report: 2/2 UU blocks: 7813893952 chunk-size: N/A super-blocks: 1.2
  Components: Online:
  0: sdd1 maj-min: 8:49 size: 7.28 TiB
  2: sdc1 maj-min: 8:33 size: 7.28 TiB
Drives:
  Local Storage: total: raw: 23.22 TiB usable: 12.31 TiB
    used: 240.89 GiB (1.9%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/sda maj-min: 8:0 vendor: Crucial model: CT1050MX300SSD1
    size: 978.09 GiB block-size: physical: 512 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: R040 scheme: GPT
  ID-2: /dev/sdb maj-min: 8:16 vendor: Crucial model: CT4000MX500SSD1
    size: 3.64 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: 045 scheme: GPT
  ID-3: /dev/sdc maj-min: 8:32 vendor: Western Digital
    model: WD80EFZX-68UW8N0 size: 7.28 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s tech: HDD rpm: 5400 serial: <filter>
    fw-rev: 0A83 scheme: GPT
  ID-4: /dev/sdd maj-min: 8:48 vendor: Western Digital
    model: WD80EFZX-68UW8N0 size: 7.28 TiB block-size: physical: 4096 B
    logical: 512 B speed: 6.0 Gb/s tech: HDD rpm: 5400 serial: <filter>
    fw-rev: 0A83 scheme: GPT
  ID-5: /dev/sde maj-min: 8:64 vendor: Crucial model: CT4000MX500SSD1
    size: 3.64 TiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: 045 scheme: GPT
  ID-6: /dev/sdf maj-min: 8:80 vendor: Crucial model: CT480M500SSD1
    size: 447.13 GiB block-size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
    tech: SSD serial: <filter> fw-rev: MU03 scheme: MBR
Partition:
  ID-1: / raw-size: 412.84 GiB size: 405.29 GiB (98.17%)
    used: 240.89 GiB (59.4%) fs: ext4 dev: /dev/dm-0 maj-min: 254:0
    mapped: luks-nonyabus-ines-snon-yabu-sinessnonyab
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default) zswap: yes
    compressor: zstd max-pool: 20%
  ID-1: swap-1 type: partition size: 34.29 GiB used: 0 KiB (0.0%)
    priority: -2 dev: /dev/dm-1 maj-min: 254:1
    mapped: luks-nonyabus-ines-snon-yabu-sinessnonyab
Sensors:
  System Temperatures: cpu: 34.0 C pch: 42.0 C mobo: N/A
  Fan Speeds (rpm): N/A
Info:
  Processes: 259 Uptime: 45m wakeups: 0 Memory: total: 32 GiB note: est.
  available: 31.17 GiB used: 2.68 GiB (8.6%) Init: systemd v: 254
  default: graphical tool: systemctl Compilers: gcc: 13.2.1 clang: 16.0.6
  Packages: pm: pacman pkgs: 1834 libs: 431 tools: pamac,yay pm: flatpak
  pkgs: 0 Shell: Bash v: 5.1.16 running-in: yakuake inxi: 3.3.29

Takakage · 22 September 2023 06:29

Syslog level 3 is abbreviated as “err”

$ LC_ALL=C journalctl --boot=0 --priority=warning..err

cefk · 24 September 2023 20:09

Thanks for pointing that out (I somehow missed that).

$ LC_ALL=C journalctl --boot=0 --priority=warning..err
[... previous is irrelevant, because - as the screenshot shows - the error occured at 21:26 .. so, this is still minutes before the actual error.]
Sep 24 21:22:43 XX gimp-2.10[6621]: GFileInfo created without standard::is-hidden
Sep 24 21:22:43 XX gimp-2.10[6621]: file ../glib/gio/gfileinfo.c: line 1633 (g_file_info_get_is_hidden): should not be reached
Sep 24 21:22:43 XX gimp-2.10[6621]: GFileInfo created without standard::is-backup
Sep 24 21:22:43 XX gimp-2.10[6621]: file ../glib/gio/gfileinfo.c: line 1655 (g_file_info_get_is_backup): should not be reached
Sep 24 21:22:49 XX gimp-2.10[6621]: GFileInfo created without standard::is-hidden
Sep 24 21:22:49 XX gimp-2.10[6621]: file ../glib/gio/gfileinfo.c: line 1633 (g_file_info_get_is_hidden): should not be reached
Sep 24 21:22:49 XX gimp-2.10[6621]: GFileInfo created without standard::is-backup
Sep 24 21:22:49 XX gimp-2.10[6621]: file ../glib/gio/gfileinfo.c: line 1655 (g_file_info_get_is_backup): should not be reached
Sep 24 21:26:32 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:26:32 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:26:33 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:26:48 XX dolphin[5689]: QString::arg: 2 argument(s) missing in org.kde.gwenview
Sep 24 21:26:48 XX gwenview[7250]: kf.i18n.kuit: "Unknown subcue ':whatsthis,' in UI marker in context {@info:whatsthis, %1 the action's text}."
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/qoi"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-aptus-mos"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-arq"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-bay"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-bmq"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cap"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cine"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cs1"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-dc2"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-drf"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-dxo"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-epson-eip"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-epson-erf"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-fff"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-hasselblad-3fr"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-iiq"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-kodak-dcs"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-kodak-kc2"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mamiya-mef"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mfw"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-minolta-mdc"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mng"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-obm"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-ori"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-ptx"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-pxn"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-qtk"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-r3d"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-raw"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rdc"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rwl"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rwz"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-samsung-srw"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-sti"
Sep 24 21:26:48 XX gwenview[7250]: org.kde.kdegraphics.gwenview.lib: Unresolved raw mime type  "image/x-samsung-srw"
Sep 24 21:26:55 XX dolphin[5689]: QString::arg: 2 argument(s) missing in krita_png
Sep 24 21:26:56 XX krita[7268]: Loading plugin "/usr/lib/kritaplugins/kritaseexprgenerator.so" failed,  "Die Bibliothek /usr/lib/kritaplugins/kritaseexprgenerator.so kann nicht geladen werden: (libKSeExprUI.so.4: Kann die Shared-Object-Datei nicht öffnen: Datei oder Verzeichnis nicht gefunden)"    [EDIT: Translation: Can't open shared-object-file: File or folder not found]
Sep 24 21:26:56 XX krita[7268]: QObject::startTimer: Timers cannot have negative intervals
Sep 24 21:33:10 XX krita[7268]: kf.kio.filewidgets.kfilefiltercombo: Could not find filter " *.png |PNG-Bild "
Sep 24 21:33:10 XX krita[7268]: kf.service.services: The desktop entry file "/usr/share/applications/org.freedesktop.Xwayland.desktop" has Type= "Application" but no Exec line
Sep 24 21:33:10 XX krita[7268]: kf.service.sycoca: Invalid Service :  "/usr/share/applications/org.freedesktop.Xwayland.desktop"
Sep 24 21:33:10 XX krita[7268]: kf.service.services: The desktop entry file "/usr/share/applications/qemu.desktop" has Type= "Application" but no Exec line
Sep 24 21:33:10 XX krita[7268]: kf.service.sycoca: Invalid Service :  "/usr/share/applications/qemu.desktop"
Sep 24 21:33:10 XX krita[7268]: krita.lib.widgetutils: KoFileDialog::onFilterSelected: Cannot find suffix for filter ""
Sep 24 21:33:10 XX krita[7268]: krita.lib.widgetutils: KoFileDialog::onFilterSelected: Cannot find suffix for filter ""
Sep 24 21:33:10 XX krita[7268]: kf.kio.widgets.kdirmodel: No node found for item that was just removed: QUrl("file:///[EDIT: This path pointed to an image, in the working directory .. there were more similar log-entries, which I've deleted for brevity]")
Sep 24 21:33:10 XX krita[7268]: krita.lib.widgetutils: KoFileDialog::onFilterSelected: Cannot find suffix for filter " *.png "
Sep 24 21:34:14 XX kwin_wayland[1182]: file:///usr/share/kwin/tabbox/informative/contents/ui/main.qml:123: TypeError: Cannot call method 'longestCaption' of null
Sep 24 21:34:14 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:34:17 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:35:03 XX dolphin[5689]: QString::arg: 2 argument(s) missing in org.kde.gwenview
Sep 24 21:35:03 XX gwenview[7397]: kf.i18n.kuit: "Unknown subcue ':whatsthis,' in UI marker in context {@info:whatsthis, %1 the action's text}."
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/qoi"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-aptus-mos"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-arq"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-bay"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-bmq"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cap"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cine"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-cs1"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-dc2"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-drf"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-dxo"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-epson-eip"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-epson-erf"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-fff"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-hasselblad-3fr"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-iiq"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-kodak-dcs"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-kodak-kc2"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mamiya-mef"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mfw"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-minolta-mdc"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-mng"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-obm"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-ori"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-ptx"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-pxn"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-qtk"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-r3d"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-raw"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rdc"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rwl"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-rwz"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-samsung-srw"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved mime type  "image/x-sti"
Sep 24 21:35:03 XX gwenview[7397]: org.kde.kdegraphics.gwenview.lib: Unresolved raw mime type  "image/x-samsung-srw"
Sep 24 21:35:14 XX kwin_wayland[1182]: This plugin does not support raise()
Sep 24 21:35:37 XX plasmashell[1299]: kf.service.services: KApplicationTrader: mimeType "x-scheme-handler/file" not found
[... that's all]

See this screenshot (description below):

I was working with blender, krita, gimp and gwenview (this was the working directory, that I had opened in Dolphin)
This was Gimp (seemed to have happened during png-Export)
Notice, that the brave-window, I’m typing this into doesn’t show up in the window-list
Notice, that this is the time, it happened (21:26) … so, I’ve limited the number of lines in the output, above to include only the entries from a few minutes, before it happened … until the end of the log (aka when I used the journalctl-command).

Aragorn · 24 September 2023 23:44

The first thing to check in the event of Plasma-related issues is whether the problem also manifests with a freshly created user account. If it doesn’t, then the problem is to be found in your ~/.config directory, and then you most likely have one or multiple corrupted Plasma configuration files.

Unfortunately, that does tend to happen from time to time, and especially so if you use any third-party themes. But it could just as easily happen with the default theme.

cefk · 30 September 2023 10:49

Can I fix this by deleting a specific plasma-config-file (or maybe even all of them)?

Will they be auto-generated (in the correct way)?
Or are there default-templates, that I could compare to mine (e.g. with diff or nvim -d)?

Aragorn · 30 September 2023 17:26

All of them, preferably. Or you can rename them. And make sure that you empty the ~/.cache folder — from a tty, before logging into Plasma again.

Trust me, I had to go through the whole routine again myself as well last night.

Yes. Everything will be set back to the KDE “factory defaults”.

cefk · 1 October 2023 06:18

I’ll try to rename all the files and delete the cache.
Then, I’ll be able to compare them to the newly generated ones, which then might provide some sort of insight, what was actually the problem.

Note: I’ll very highly likely mark this as the solution, but since the problem isn’t easily reproducible and only happens every now and again, in the first place, I want to make extra sure it’s actually solved.

Thanks for your help. I appreciate it

system · 3 October 2023 20:19

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