KDE / Wayland - External display crashes and enters a loop on multiple machines

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Similarly to this post from 2023, I have been having the same issue on both my personal and work laptop, both with Manjaro KDE in wayland and only on my samsung LS27CG55 144Hz 1440p display.

I can connect the display and it will work fine for ~5s and then crash and bootloop until I remove the HDMI cable. The only workaround I have found is to turn on the display, open the settings menu on the display and leave it on while connecting the HDMI cable, then waiting for 5s to pass and close the settings panel, then everything is stable.

My personal laptop has had this install of Manjaro since 2021 but is running on the newest stable release, so I tought the issue might go away when reinstalling everything.

This week I got a work laptop and I installed the latest Manjaro KDE release and the same issue appeared.

Both laptops have AMD CPU with iGPUs (5700U and 7840U) and both are connected with a beefy HDMI cable to my monitor.

This does not happen on older Ubuntu 20.04 or on the Windows partition I had for a while and only started happening by about november last year.

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This is the output of inxi --admin --verbosity=8 --filter --no-host --width regarding the display

System:
  Kernel: 6.12.4-1-MANJARO arch: x86_64 bits: 64 compiler: gcc v: 14.2.1
    clocksource: tsc avail: hpet,acpi_pm
    parameters: BOOT_IMAGE=/boot/vmlinuz-6.12-x86_64
    root=UUID=f09aa16a-5e78-406c-96b8-1c7b99e9faa8 rw quiet splash
    udev.log_priority=3
  Desktop: KDE Plasma v: 6.2.4 tk: Qt v: N/A info: frameworks v: 6.8.0
    wm: kwin_wayland vt: 1 dm: SDDM Distro: Manjaro base: Arch Linux
Machine:
  Type: Laptop System: LENOVO product: 21K5S02000 v: ThinkPad P14s Gen 4
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: LENOVO model: 21K5S02000 v: SDK0T76530 WIN
    serial: <superuser required> part-nu: LENOVO_MT_21K5_BU_Think_FM_ThinkPad
    P14s Gen 4 uuid: <superuser required> UEFI: LENOVO v: R2FET33W (1.13 )
    date: 09/08/2023
Battery:
  ID-1: BAT0 charge: 25.1 Wh (51.1%) condition: 49.1/52.5 Wh (93.6%)
    power: 43.5 W volts: 16.6 min: 15.4 model: Celxpert 5B10W51866 type: Li-poly
    serial: <filter> status: charging cycles: 89
Memory:
  System RAM: total: 64 GiB available: 58.56 GiB used: 3.1 GiB (5.3%)
  Message: For most reliable report, use superuser + dmidecode.
  Array-1: capacity: 64 GiB slots: 4 modules: 4 EC: None
    max-module-size: 16 GiB note: est.
  Device-1: Channel-A DIMM 0 type: LPDDR5 detail: synchronous unbuffered
    (unregistered) size: 16 GiB speed: 6400 MT/s volts: curr: 0.5 min: 0.5
    max: 0.5 width (bits): data: 32 total: 32 manufacturer: Hynix
    part-no: H58G78BK7BX114 serial: N/A
  Device-2: Channel-B DIMM 0 type: LPDDR5 detail: synchronous unbuffered
    (unregistered) size: 16 GiB speed: 6400 MT/s volts: curr: 0.5 min: 0.5
    max: 0.5 width (bits): data: 32 total: 32 manufacturer: Hynix
    part-no: H58G78BK7BX114 serial: N/A
  Device-3: Channel-C DIMM 0 type: LPDDR5 detail: synchronous unbuffered
    (unregistered) size: 16 GiB speed: 6400 MT/s volts: curr: 0.5 min: 0.5
    max: 0.5 width (bits): data: 32 total: 32 manufacturer: Hynix
    part-no: H58G78BK7BX114 serial: N/A
  Device-4: Channel-D DIMM 0 type: LPDDR5 detail: synchronous unbuffered
    (unregistered) size: 16 GiB speed: 6400 MT/s volts: curr: 0.5 min: 0.5
    max: 0.5 width (bits): data: 32 total: 32 manufacturer: Hynix
    part-no: H58G78BK7BX114 serial: N/A
PCI Slots::
  Slot: N/A type: N/A status: available length: other bus-ID: 00ff:ff:1f.7
CPU:
  Info: model: AMD Ryzen 7 PRO 7840U w/ Radeon 780M Graphics bits: 64
    type: MT MCP arch: Zen 4 gen: 4 level: v4 note: check built: 2022+
    process: TSMC n5 (5nm) family: 0x19 (25) model-id: 0x74 (116) stepping: 1
    microcode: 0xA704107
  Topology: cpus: 1x dies: 1 clusters: 1 cores: 8 threads: 16 tpc: 2
    smt: enabled cache: L1: 512 KiB desc: d-8x32 KiB; i-8x32 KiB L2: 8 MiB
    desc: 8x1024 KiB L3: 16 MiB desc: 1x16 MiB
  Speed (MHz): avg: 400 min/max: 400/5132 boost: enabled scaling:
    driver: amd-pstate-epp governor: powersave cores: 1: 400 2: 400 3: 400 4: 400
    5: 400 6: 400 7: 400 8: 400 9: 400 10: 400 11: 400 12: 400 13: 400 14: 400
    15: 400 16: 400 bogomips: 105445
  Flags: 3dnowprefetch abm adx aes amd_lbr_pmc_freeze amd_lbr_v2 aperfmperf
    apic arat avx avx2 avx512_bf16 avx512_bitalg avx512_vbmi2 avx512_vnni
    avx512_vpopcntdq avx512bw avx512cd avx512dq avx512f avx512ifma avx512vbmi
    avx512vl bmi1 bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov
    cmp_legacy constant_tsc cpb cppc cpuid cqm cqm_llc cqm_mbm_local
    cqm_mbm_total cqm_occup_llc cr8_legacy cx16 cx8 de decodeassists erms
    extapic extd_apicid f16c flush_l1d flushbyasid fma fpu fsgsbase fxsr
    fxsr_opt gfni ht hw_pstate ibpb ibrs ibrs_enhanced ibs invpcid irperf
    lahf_lm lbrv lm mba mca mce misalignsse mmx mmxext monitor movbe msr mtrr
    mwaitx nonstop_tsc nopl npt nrip_save nx ospke osvw overflow_recov pae pat
    pausefilter pclmulqdq pdpe1gb perfctr_core perfctr_llc perfctr_nb
    perfmon_v2 pfthreshold pge pku pni popcnt pse pse36 rapl rdpid rdpru
    rdrand rdseed rdt_a rdtscp rep_good sep sha_ni skinit smap smca smep ssbd
    sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm svm_lock syscall tce
    topoext tsc tsc_scale umip user_shstk v_spec_ctrl vaes vgif vmcb_clean vme
    vmmcall vnmi vpclmulqdq wbnoinvd wdt x2apic x2avic xgetbv1 xsave xsavec
    xsaveerptr xsaveopt xsaves xtopology
  Vulnerabilities:
  Type: gather_data_sampling status: Not affected
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: mmio_stale_data status: Not affected
  Type: reg_file_data_sampling status: Not affected
  Type: retbleed status: Not affected
  Type: spec_rstack_overflow mitigation: Safe RET
  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: Enhanced / Automatic IBRS; IBPB: conditional;
    STIBP: always-on; RSB filling; PBRSB-eIBRS: Not affected; BHI: Not
    affected
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Advanced Micro Devices [AMD/ATI] Phoenix1 vendor: Lenovo
    driver: amdgpu v: kernel arch: RDNA-3 code: Phoenix process: TSMC n4 (4nm)
    built: 2023+ pcie: gen: 4 speed: 16 GT/s lanes: 16 ports:
    active: HDMI-A-1,eDP-1 empty: DP-1, DP-2, DP-3, DP-4, DP-5, DP-6,
    Writeback-1 bus-ID: 65:00.0 chip-ID: 1002:15bf class-ID: 0300 temp: 38.0 C
  Device-2: Chicony Integrated Camera driver: uvcvideo type: USB rev: 2.0
    speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-1:2 chip-ID: 04f2:b7c0
    class-ID: fe01 serial: <filter>
  Display: wayland server: X.org v: 1.21.1.14 with: Xwayland v: 24.1.4
    compositor: kwin_wayland driver: X: loaded: amdgpu unloaded: modesetting
    alternate: fbdev,vesa dri: radeonsi gpu: amdgpu d-rect: 4480x2640
    display-ID: 0
  Monitor-1: HDMI-A-1 pos: top-right model: Samsung Odyssey G5
    serial: <filter> built: 2024 res: mode: 2560x1440 hz: 120 scale: 100% (1)
    dpi: 109 gamma: 1.2 chroma: red: x: 0.655 y: 0.333 green: x: 0.314 y: 0.616
    blue: x: 0.149 y: 0.067 white: x: 0.314 y: 0.329
    size: 597x336mm (23.5x13.23") diag: 685mm (27") ratio: 16:9
    modes: 2560x1440, 3840x2160, 1920x1200, 1920x1080, 1600x1200, 1680x1050,
    1600x900, 1280x1024, 1440x900, 1280x800, 1152x864, 1280x720, 1024x768,
    832x624, 800x600, 720x576, 720x480, 640x480, 720x400
  EDID-Warnings: 1: parse_edid: unhandled CEA mode 96 2: parse_edid:
    unhandled CEA mode 97
  Monitor-2: eDP-1 pos: bottom-l model: California Institute of eDP-1-0x1404
    built: 2020 res: mode: 1920x1200 hz: 60 scale: 100% (1) dpi: 161 gamma: 1.2
    chroma: red: x: 0.643 y: 0.333 green: x: 0.302 y: 0.608 blue: x: 0.141
    y: 0.055 white: x: 0.318 y: 0.341 size: 302x189mm (11.89x7.44")
    diag: 356mm (14") ratio: 16:10 modes: 1920x1200, 1920x1080, 1600x1200,
    1680x1050, 1280x1024, 1440x900, 1280x800, 1280x720, 1024x768, 800x600,
    640x480
  API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
    device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi
    wayland: drv: radeonsi x11: drv: radeonsi
  API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 24.2.8-arch1.1
    glx-v: 1.4 direct-render: yes renderer: AMD Radeon 780M (radeonsi gfx1103_r1
    LLVM 18.1.8 DRM 3.59 6.12.4-1-MANJARO) device-ID: 1002:15bf
    memory: 3.91 GiB unified: no display-ID: :1.0
  API: Vulkan v: 1.4.303 layers: 4 device: 0 type: integrated-gpu name: AMD
    Radeon 780M (RADV GFX1103_R1) driver: N/A device-ID: 1002:15bf
    surfaces: xcb,xlib,wayland
  Info: Tools: api: clinfo, eglinfo, glxinfo, vulkaninfo
    de: kscreen-console,kscreen-doctor wl: wayland-info
    x11: xdpyinfo, xprop, xrandr
Audio:
  Device-1: Advanced Micro Devices [AMD/ATI] Rembrandt Radeon High Definition
    Audio vendor: Lenovo driver: snd_hda_intel v: kernel pcie: gen: 4
    speed: 16 GT/s lanes: 16 bus-ID: 65:00.1 chip-ID: 1002:1640 class-ID: 0403
  Device-2: Advanced Micro Devices [AMD] ACP/ACP3X/ACP6x Audio Coprocessor
    vendor: Lenovo driver: snd_pci_ps v: kernel alternate: snd_pci_acp3x,
    snd_rn_pci_acp3x, snd_pci_acp5x, snd_pci_acp6x, snd_acp_pci,
    snd_rpl_pci_acp6x, snd_sof_amd_renoir, snd_sof_amd_rembrandt,
    snd_sof_amd_vangogh, snd_sof_amd_acp63, snd_sof_amd_acp70 pcie: gen: 4
    speed: 16 GT/s lanes: 16 bus-ID: 65:00.5 chip-ID: 1022:15e2 class-ID: 0480
  Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio
    vendor: Lenovo driver: snd_hda_intel v: kernel pcie: gen: 4 speed: 16 GT/s
    lanes: 16 bus-ID: 65:00.6 chip-ID: 1022:15e3 class-ID: 0403
  Device-4: Kingston HyperX 7.1 Audio
    driver: hid-generic,snd-usb-audio,usbhid type: USB rev: 2.0 speed: 12 Mb/s
    lanes: 1 mode: 1.1 bus-ID: 1-1.3:8 chip-ID: 0951:16a4 class-ID: 0300
    serial: <filter>
  API: ALSA v: k6.12.4-1-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: active with: 1: pipewire-pulse
    status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
    tools: pactl,pw-cat,pw-cli,wpctl
Network:
  Device-1: Realtek RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet
    vendor: Lenovo driver: r8169 v: kernel pcie: gen: 1 speed: 2.5 GT/s lanes: 1
    port: 6000 bus-ID: 02:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp2s0f0 state: down mac: <filter>
  Device-2: Qualcomm QCNFA765 Wireless Network Adapter vendor: Lenovo
    driver: ath11k_pci v: kernel pcie: gen: 3 speed: 8 GT/s lanes: 1
    bus-ID: 03:00.0 chip-ID: 17cb:1103 class-ID: 0280
  IF: wlp3s0 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: link
  IF-ID-1: wwan0 state: down mac: N/A
  Info: services: NetworkManager, systemd-timesyncd, wpa_supplicant
  WAN IP: <filter>
Bluetooth:
  Device-1: USI driver: btusb v: 0.8 type: USB rev: 1.1 speed: 12 Mb/s lanes: 1
    mode: 1.1 bus-ID: 1-3.1:7 chip-ID: 10ab:9309 class-ID: e001
  Report: rfkill ID: hci0 rfk-id: 2 state: up address: see --recommends
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 953.87 GiB used: 69.22 GiB (7.3%)
  SMART Message: Required tool smartctl not installed. Check --recommends
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: SK Hynix model: HFS001TEJ9X162N
    size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 63.2 Gb/s
    lanes: 4 tech: SSD serial: <filter> fw-rev: 51730A10 temp: 39.9 C
    scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 953.57 GiB size: 937.53 GiB (98.32%) used: 69.22 GiB (7.4%)
    fs: ext4 dev: /dev/nvme0n1p2 maj-min: 259:2 label: N/A
    uuid: f09aa16a-5e78-406c-96b8-1c7b99e9faa8
  ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
    used: 288 KiB (0.1%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: N/A
    uuid: 7C19-1EB8
Swap:
  Alert: No swap data was found.
Unmounted:
  Message: No unmounted partitions found.
USB:
  Hub-1: 1-0:1 info: hi-speed hub with single TT ports: 5 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-2: 1-1:2 info: Huasheng USB2.0 HUB ports: 4 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 214b:7250 class-ID: 0900
  Device-1: 1-1.1:4 info: Genesys Logic microSD Card Reader
    type: mass storage driver: usb-storage interfaces: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 98mA
    chip-ID: 05e3:0751 class-ID: 0806
  Device-2: 1-1.2:6 info: Keychron V1 Max type: keyboard,HID
    driver: hid-generic,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
    lanes: 1 mode: 1.1 power: 500mA chip-ID: 3434:0913 class-ID: 0300
  Device-3: 1-1.3:8 info: Kingston HyperX 7.1 Audio type: audio,HID
    driver: hid-generic,snd-usb-audio,usbhid interfaces: 4 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 0951:16a4 class-ID: 0300 serial: <filter>
  Device-4: 1-1.4:10 info: Logitech G502 SE HERO Gaming Mouse type: mouse,HID
    driver: hid-generic,usbhid interfaces: 2 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s)
    lanes: 1 mode: 1.1 power: 300mA chip-ID: 046d:c08b class-ID: 0300
    serial: <filter>
  Hub-3: 1-3:3 info: Genesys Logic Hub ports: 2 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 power: 100mA
    chip-ID: 05e3:0610 class-ID: 0900
  Device-1: 1-3.1:7 info: USI type: bluetooth driver: btusb interfaces: 2
    rev: 1.1 speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 100mA
    chip-ID: 10ab:9309 class-ID: e001
  Device-2: 1-3.2:9 info: Alcor Micro AU9540 Smartcard Reader
    type: smart card driver: N/A interfaces: 1 rev: 2.0
    speed: 12 Mb/s (1.4 MiB/s) lanes: 1 mode: 1.1 power: 50mA
    chip-ID: 058f:9540 class-ID: 0b00
  Device-3: 1-5:5 info: Shenzhen Goodix USB2.0 MISC type: <vendor specific>
    driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s (1.4 MiB/s) lanes: 1
    mode: 1.1 power: 100mA chip-ID: 27c6:6594 class-ID: ef00 serial: <filter>
  Hub-4: 2-0:1 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
  Hub-5: 3-0:1 info: hi-speed hub with single TT ports: 1 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: 3-1:2 info: Chicony Integrated Camera type: video
    driver: uvcvideo interfaces: 5 rev: 2.0 speed: 480 Mb/s (57.2 MiB/s) lanes: 1
    mode: 2.0 power: 500mA chip-ID: 04f2:b7c0 class-ID: fe01 serial: <filter>
  Hub-6: 4-0:1 info: super-speed hub ports: 1 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
  Hub-7: 5-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-8: 6-0:1 info: super-speed hub ports: 1 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
  Hub-9: 7-0:1 info: hi-speed hub with single TT ports: 1 rev: 2.0
    speed: 480 Mb/s (57.2 MiB/s) lanes: 1 mode: 2.0 chip-ID: 1d6b:0002
    class-ID: 0900
  Hub-10: 8-0:1 info: super-speed hub ports: 1 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: 39.0 C mobo: N/A gpu: amdgpu temp: 38.0 C
  Fan Speeds (rpm): fan-1: 0 fan-2: 0
Repos:
  Packages: pm: pacman pkgs: 1330 libs: 380 tools: pamac,yay pm: flatpak
    pkgs: 0
  Active pacman repo servers in: /etc/pacman.d/mirrorlist
    1: http://kartolo.sby.datautama.net.id/manjaro/stable/$repo/$arch
    2: https://mirrors.ucr.ac.cr/manjaro/stable/$repo/$arch
    3: https://mirrors.aliyun.com/manjaro/stable/$repo/$arch
    4: https://mirrors.xtom.de/manjaro/stable/$repo/$arch
    5: https://manjarolinux-mirror.cloud.mu/stable/$repo/$arch
    6: https://fosszone.csd.auth.gr/manjaro/stable/$repo/$arch
    7: http://ftp.belnet.be/mirrors/manjaro/repos/stable/$repo/$arch
    8: https://mirror.2degrees.nz/manjaro/stable/$repo/$arch
    9: https://mirror.vinehost.net/manjaro/stable/$repo/$arch
    10: https://ridgewireless.mm.fcix.net/manjaro/stable/$repo/$arch
    11: https://mnvoip.mm.fcix.net/manjaro/stable/$repo/$arch
    12: https://manjaro.mirror.wearetriple.com/stable/$repo/$arch
    13: https://manjaro.ynh.ovh/stable/$repo/$arch
    14: https://manjaro.mirrors.lavatech.top/stable/$repo/$arch
    15: https://ipng.mm.fcix.net/manjaro/stable/$repo/$arch
    16: https://mirror.csclub.uwaterloo.ca/manjaro/stable/$repo/$arch
    17: https://cofractal-ewr.mm.fcix.net/manjaro/stable/$repo/$arch
    18: https://ftp.caliu.cat/pub/distribucions/manjaro/stable/$repo/$arch
    19: http://ftp.free.org/mirrors/repo.manjaro.org/repos/stable/$repo/$arch
    20: http://mirror.is.co.za/mirrors/manjaro.org/stable/$repo/$arch
    21: https://mirror.nyist.edu.cn/manjaro/stable/$repo/$arch
    22: https://mirrors.cicku.me/manjaro/stable/$repo/$arch
    23: https://codingflyboy.mm.fcix.net/manjaro/stable/$repo/$arch
    24: https://mirrors.sjtug.sjtu.edu.cn/manjaro/stable/$repo/$arch
    25: https://mirrors.jlu.edu.cn/manjaro/stable/$repo/$arch
    26: https://mirror.it4i.cz/manjaro/stable/$repo/$arch
    27: https://ct.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    28: https://mirrors.ustc.edu.cn/manjaro/stable/$repo/$arch
    29: https://linorg.usp.br/manjaro/stable/$repo/$arch
    30: https://mirrors.xtom.ee/manjaro/stable/$repo/$arch
    31: https://ohioix.mm.fcix.net/manjaro/stable/$repo/$arch
    32: https://manjaro.kurdy.org/stable/$repo/$arch
    33: https://coresite.mm.fcix.net/manjaro/stable/$repo/$arch
    34: https://nocix.mm.fcix.net/manjaro/stable/$repo/$arch
    35: https://ftp.halifax.rwth-aachen.de/manjaro/stable/$repo/$arch
    36: http://mirror.terrahost.no/linux/manjaro/stable/$repo/$arch
    37: https://mirrors.manjaro.org/repo/stable/$repo/$arch
    38: https://mirror.telepoint.bg/manjaro/stable/$repo/$arch
    39: https://mirror.yandex.ru/mirrors/manjaro/stable/$repo/$arch
    40: http://mirror.xeonbd.com/manjaro/stable/$repo/$arch
    41: https://manjaro.mirror.garr.it/manjaro/stable/$repo/$arch
    42: https://ftp.nluug.nl/pub/os/Linux/distr/manjaro/stable/$repo/$arch
    43: http://ftp.uni-kl.de/pub/linux/manjaro/stable/$repo/$arch
    44: https://repo.ialab.dsu.edu/manjaro/stable/$repo/$arch
    45: http://mirror.datacenter.by/pub/mirrors/manjaro/stable/$repo/$arch
    46: https://mirrors.pku.edu.cn/manjaro/stable/$repo/$arch
    47: https://ftp.linux.org.tr/manjaro/stable/$repo/$arch
    48: https://bd.mirror.vanehost.com/Manjaro/stable/$repo/$arch
    49: https://mirror.xenyth.net/manjaro/stable/$repo/$arch
    50: https://mirror.kku.ac.th/manjaro/stable/$repo/$arch
    51: http://ftp.snt.utwente.nl/pub/linux/manjaro/stable/$repo/$arch
    52: http://ossmirror.mycloud.services/os/linux/manjaro/stable/$repo/$arch
    53: https://mirror1.sox.rs/manjaro/stable/$repo/$arch
    54: https://mirror.ibakerserver.pt/manjaro/stable/$repo/$arch
    55: https://mirrors.atlas.net.co/manjaro/stable/$repo/$arch
    56: https://mirror.kamtv.ru/manjaro/stable/$repo/$arch
    57: https://edgeuno-bog2.mm.fcix.net/manjaro/stable/$repo/$arch
    58: https://mirror.leitecastro.com/manjaro/stable/$repo/$arch
    59: https://opencolo.mm.fcix.net/manjaro/stable/$repo/$arch
    60: https://ftp.cc.uoc.gr/mirrors/linux/manjaro/stable/$repo/$arch
    61: https://ftp.psnc.pl/linux/manjaro/stable/$repo/$arch
    62: https://mirrors.up.pt/pub/manjaro/stable/$repo/$arch
    63: https://mirrors.ocf.berkeley.edu/manjaro/stable/$repo/$arch
    64: https://mirrors.tuna.tsinghua.edu.cn/manjaro/stable/$repo/$arch
    65: https://mirrors.ft.uam.es/manjaro/stable/$repo/$arch
    66: https://www.mirrorservice.org/sites/repo.manjaro.org/repos/stable/$repo/$arch
    67: https://mirror.albony.xyz/manjaro/stable/$repo/$arch
    68: http://ftp.rz.tu-bs.de/pub/mirror/manjaro.org/repos/stable/$repo/$arch
    69: https://repos.silknet.com/manjaro/stable/$repo/$arch
    70: https://manjaro.repo.cure.edu.uy/stable/$repo/$arch
    71: https://forksystems.mm.fcix.net/manjaro/stable/$repo/$arch
    72: https://mirror.math.princeton.edu/pub/manjaro/stable/$repo/$arch
    73: https://mirror.netcologne.de/manjaro/stable/$repo/$arch
    74: https://mirror.freedif.org/Manjaro/stable/$repo/$arch
    75: https://mirror.futureweb.be/manjaro/stable/$repo/$arch
    76: https://mirrors2.manjaro.org/stable/$repo/$arch
    77: https://mirror.raiolanetworks.com/manjaro/stable/$repo/$arch
    78: http://manjaro.mirror.ac.za/stable/$repo/$arch
    79: https://nnenix.mm.fcix.net/manjaro/stable/$repo/$arch
    80: https://mirrors.dotsrc.org/manjaro/stable/$repo/$arch
    81: https://muug.ca/mirror/manjaro/stable/$repo/$arch
    82: http://ftp.dei.uc.pt/pub/linux/manjaro/stable/$repo/$arch
    83: https://mirror.dkm.cz/manjaro/stable/$repo/$arch
    84: http://mirror.fcix.net/manjaro/stable/$repo/$arch
    85: https://ftp.lysator.liu.se/pub/manjaro/stable/$repo/$arch
    86: https://irltoolkit.mm.fcix.net/manjaro/stable/$repo/$arch
    87: http://ftp.riken.jp/Linux/manjaro/stable/$repo/$arch
    88: https://mirror.easyname.at/manjaro/stable/$repo/$arch
    89: https://mirror.truenetwork.ru/manjaro/stable/$repo/$arch
    90: https://mirrors.nic.cz/manjaro/stable/$repo/$arch
    91: https://mirror.23m.com/manjaro/stable/$repo/$arch
    92: https://uvermont.mm.fcix.net/manjaro/stable/$repo/$arch
    93: https://mirror.alwyzon.net/manjaro/stable/$repo/$arch
    94: http://manjaro.grena.ge/stable/$repo/$arch
    95: https://mirror.aarnet.edu.au/pub/manjaro/stable/$repo/$arch
    96: https://southfront.mm.fcix.net/manjaro/stable/$repo/$arch
    97: https://quantum-mirror.hu/mirrors/pub/manjaro/stable/$repo/$arch
    98: https://ask4.mm.fcix.net/manjaro/stable/$repo/$arch
    99: https://mirror.bardia.tech/manjaro/stable/$repo/$arch
    100: https://volico.mm.fcix.net/manjaro/stable/$repo/$arch
    101: https://mirrors.piconets.webwerks.in/manjaro-mirror/stable/$repo/$arch
    102: https://mirrors.sonic.net/manjaro/stable/$repo/$arch
    103: https://mirror.ufro.cl/manjaro/stable/$repo/$arch
    104: https://manjaro.c3sl.ufpr.br/stable/$repo/$arch
    105: https://mirror.nju.edu.cn/manjaro/stable/$repo/$arch
    106: https://mirror.init7.net/manjaro/stable/$repo/$arch
    107: https://mirror.koddos.net/manjaro/stable/$repo/$arch
    108: https://repo.iut.ac.ir/repo/manjaro/stable/$repo/$arch
    109: http://free.nchc.org.tw/manjaro/stable/$repo/$arch
    110: https://mirror.alpix.eu/manjaro/stable/$repo/$arch
    111: https://manjaro.ipacct.com/manjaro/stable/$repo/$arch
    112: http://manjaro.mirrors.uk2.net/stable/$repo/$arch
    113: https://mirror.phoepsilonix.love/manjaro/stable/$repo/$arch
    114: https://mirrors.netix.net/manjaro/stable/$repo/$arch
    115: https://gsl-syd.mm.fcix.net/manjaro/stable/$repo/$arch
    116: https://mirror.funami.tech/manjaro/stable/$repo/$arch
    117: http://ftp.tu-chemnitz.de/pub/linux/manjaro/stable/$repo/$arch
    118: https://ba.mirror.garr.it/mirrors/manjaro/stable/$repo/$arch
    119: http://ftp.tsukuba.wide.ad.jp/Linux/manjaro/stable/$repo/$arch
    120: https://ziply.mm.fcix.net/manjaro/stable/$repo/$arch
    121: https://manjaro.mirror.liquidtelecom.com/stable/$repo/$arch
    122: https://mirror.seahost.de/manjaro/stable/$repo/$arch
    123: https://mirror.ufam.edu.br/manjaro/stable/$repo/$arch
    124: https://mirror.dc.uz/manjaro/stable/$repo/$arch
    125: https://ftpmirror1.infania.net/mirror/manjaro/stable/$repo/$arch
    126: https://ftp.gwdg.de/pub/linux/manjaro/stable/$repo/$arch
    127: https://mirror.archlinux.tw/Manjaro/stable/$repo/$arch
    128: https://mirror.bouwhuis.network/manjaro/stable/$repo/$arch
    129: https://fastmirror.pp.ua/manjaro/stable/$repo/$arch
    130: https://mirrors.xtom.jp/manjaro/stable/$repo/$arch
    131: https://mirrors.gigenet.com/manjaro/stable/$repo/$arch
    132: https://mirror.zetup.net/manjaro/stable/$repo/$arch
Processes:
  CPU top: 5 of 359
  1: cpu: 100% command: ps pid: 3548 mem: 3.50 MiB (0.0%)
  2: cpu: 29.1% command: firefox pid: 1764 mem: 607.5 MiB (1.0%)
  3: cpu: 13.6% command: firefox pid: 3233 mem: 270.1 MiB (0.4%)
  4: cpu: 12.3% command: kwin_wayland pid: 926 mem: 313.1 MiB (0.5%)
  5: cpu: 9.1% command: konsole pid: 3434 mem: 228.6 MiB (0.3%)
  Memory top: 5 of 359
  1: mem: 607.5 MiB (1.0%) command: firefox pid: 1764 cpu: 29.1%
  2: mem: 359.7 MiB (0.5%) command: plasmashell pid: 1188 cpu: 1.9%
  3: mem: 313.1 MiB (0.5%) command: kwin_wayland pid: 926 cpu: 12.3%
  4: mem: 270.1 MiB (0.4%) command: firefox pid: 3233 cpu: 13.6%
  5: mem: 264.9 MiB (0.4%) command: systemsettings pid: 2365 cpu: 2.0%
Info:
  Processes: 359 Power: uptime: 7m states: freeze,mem,disk suspend: s2idle
    wakeups: 0 hibernate: platform avail: shutdown, reboot, suspend, test_resume
    image: 23.4 GiB services: org_kde_powerdevil,upowerd Init: systemd v: 256
    default: graphical tool: systemctl
  Compilers: gcc: 14.2.1 Shell: Zsh v: 5.9 default: Bash v: 5.2.37
    running-in: konsole inxi: 3.3.37
1 Like
3

Please always post the full inxi output rather than only the portions you think might be needed.

I’m sure someone will help when they can.
In the meantime, a little housekeeping:

Welcome to the Manjaro community

As a new or 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:

Required Reading:

Resources:

Update Announcements:

The Update Announcements contain update related information and a Known Issues and Solutions section that should generally be checked before posting a request for support.

System Information:

Output of this command (formatted according to forum requirements) 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.

4

Ok! I updated the original reply with the full inxi

1 Like
5

Please make clear: Is your display crashing or do you have a bootloop? Exact error description is crutial for solving the issue…

6

The monitor itself crashes.

I connect the monitor and it works for 5ish seconds.

The monitor turns off abruptly.
KDE goes back to my single monitor setup.
Display turns on by itself.
Kde goes to my dual monitor setup for a second and immediately goes back.
Monitor goes off straightaway.

Same behaviour on both laptops.

7

This sounds to me like a hardware issue.

8

Working on Ubuntu 20.04 would suggest the kernel or Plasma has a regression somewhere.

As Manjaro as distribution uses upstream packages there is nothing the team can do to fix your issue.

Being on stable branch implies that upstream updates that may fix the regression is not available yet.

You can work around this by switching to testing branch which has been updated today.

I just tested with a Lenovo X13 AMD (7840U APU (unstable) using hdmi to connect Acer XV272 using 3840x1200.

The connection prompted the expected dialog and there is no bootloop or monitor crash.

As @Wollie, I suspect it could be hardware related, but I cannot be conclusive.

Tested on

Operating System: Manjaro Linux 
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.10.0
Qt Version: 6.8.1
Kernel Version: 6.13.0-1-MANJARO (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 PRO 7840U w/ Radeon 780M Graphics
Memory: 30,0 GiB of RAM
Graphics Processor: AMD Radeon 780M
Manufacturer: LENOVO
Product Name: 21J3CTO1WW
System Version: ThinkPad X13 Gen 4

I do get some irritating screen distortion (cursor area horizontally) where I am editing this post.

These occur on my primary laptop screen (1920x1200) but disappears when moving browser to external display.

//EDIT:
I am able to remove the flicker by setting external screen to same resolution as internal screen and setting adaptive sync to always.

Then reboot user space

systemctl reboot-userspace

This could indicate the kwin window manager has problems drawing the screens correct when different resolutions is used - especially if the format is different as in 16:9 vs 16:10.

You should report your issue upstream KDE at [bugs.kde.org]

To reach a working solution, I suggest you experiment with the resolutions and adaptive sync until you find the correct combination for your system.