Lxqt-Kwin acting weird out of nowhere

Hello, people!! First things first:

inxi -Faz
System:    Kernel: 5.14.6-zen1-1-zen x86_64 bits: 64 compiler: gcc v: 11.1.0 
           parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen root=UUID=1409d596-84e3-4768-b0e5-996dc20bb2a5 rw 
           [email protected] quiet splash rd.udev.log_priority=3 vt.global_cursor_default=0 
           systemd.unified_cgroup_hierarchy=1 loglevel=3 
           Desktop: LXQt 0.17.1 tk: Qt 5.15.2 info: cairo-dock, lxqt-panel wm: kwin_x11 vt: 1 dm: SDDM Distro: Garuda Linux 
           base: Arch Linux 
Machine:   Type: Desktop Mobo: INTEL model: HM65DESK serial: <filter> UEFI: American Megatrends v: 4.6.5 date: 02/23/2019 
CPU:       Info: Dual Core model: Intel Core i7-2620M bits: 64 type: MT MCP arch: Sandy Bridge family: 6 model-id: 2A (42) 
           stepping: 7 microcode: 2F cache: L2: 4 MiB 
           flags: avx lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 bogomips: 21551 
           Speed: 1005 MHz min/max: 800/3400 MHz Core speeds (MHz): 1: 1005 2: 3192 3: 1679 4: 1282 
           Vulnerabilities: Type: itlb_multihit status: KVM: VMX unsupported 
           Type: l1tf mitigation: PTE Inversion 
           Type: mds mitigation: Clear CPU buffers; SMT vulnerable 
           Type: meltdown mitigation: PTI 
           Type: spec_store_bypass mitigation: Speculative Store Bypass disabled via prctl and seccomp 
           Type: spectre_v1 mitigation: usercopy/swapgs barriers and __user pointer sanitization 
           Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional, IBRS_FW, STIBP: conditional, RSB filling 
           Type: srbds status: Not affected 
           Type: tsx_async_abort status: Not affected 
Graphics:  Device-1: NVIDIA GM107 [GeForce GTX 750] driver: nvidia v: 470.63.01 alternate: nouveau,nvidia_drm bus-ID: 01:00.0 
           chip-ID: 10de:1381 class-ID: 0300 
           Display: x11 server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: nvidia display-ID: :0 screens: 1 
           Screen-1: 0 s-res: 1360x768 s-dpi: 90 s-size: 384x300mm (15.1x11.8") s-diag: 487mm (19.2") 
           Monitor-1: HDMI-0 res: 1360x768 hz: 60 dpi: 49 size: 708x398mm (27.9x15.7") diag: 812mm (32") 
           OpenGL: renderer: NVIDIA GeForce GTX 750/PCIe/SSE2 v: 4.6.0 NVIDIA 470.63.01 direct render: Yes 
Audio:     Device-1: Intel 6 Series/C200 Series Family High Definition Audio driver: snd_hda_intel v: kernel bus-ID: 00:1b.0 
           chip-ID: 8086:1c20 class-ID: 0403 
           Device-2: NVIDIA GM107 High Definition Audio [GeForce 940MX] driver: snd_hda_intel v: kernel bus-ID: 01:00.1 
           chip-ID: 10de:0fbc class-ID: 0403 
           Sound Server-1: ALSA v: k5.14.6-zen1-1-zen running: yes 
           Sound Server-2: JACK v: 1.9.19 running: no 
           Sound Server-3: PulseAudio v: 15.0 running: yes 
           Sound Server-4: PipeWire v: 0.3.35 running: yes 
Network:   Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet driver: r8169 v: kernel port: d000 bus-ID: 03:00.0 
           chip-ID: 10ec:8168 class-ID: 0200 
           IF: enp3s0 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 2.78 TiB used: 681.4 GiB (23.9%) 
           SMART Message: Required tool smartctl not installed. Check --recommends 
           ID-1: /dev/sda maj-min: 8:0 model: SATA SSD size: 55.9 GiB block-size: physical: 512 B logical: 512 B 
           speed: 3.0 Gb/s type: SSD serial: <filter> rev: Sb10 scheme: GPT 
           ID-2: /dev/sdb maj-min: 8:16 vendor: Seagate model: ST3000NM0053 size: 2.73 TiB block-size: physical: 512 B 
           logical: 512 B speed: 3.0 Gb/s type: HDD rpm: 7200 serial: <filter> rev: G00A scheme: GPT 
Partition: ID-1: / raw-size: 389.6 GiB size: 389.6 GiB (100.00%) used: 287.73 GiB (73.9%) fs: btrfs dev: /dev/sdb4 
           maj-min: 8:20 
           ID-2: /boot/efi raw-size: 5.59 GiB size: 5.58 GiB (99.80%) used: 235.9 MiB (4.1%) fs: vfat dev: /dev/sda2 
           maj-min: 8:2 
           ID-3: /home raw-size: 389.6 GiB size: 389.6 GiB (100.00%) used: 287.73 GiB (73.9%) fs: btrfs dev: /dev/sdb4 
           maj-min: 8:20 
           ID-4: /var/log raw-size: 389.6 GiB size: 389.6 GiB (100.00%) used: 287.73 GiB (73.9%) fs: btrfs dev: /dev/sdb4 
           maj-min: 8:20 
           ID-5: /var/tmp raw-size: 389.6 GiB size: 389.6 GiB (100.00%) used: 287.73 GiB (73.9%) fs: btrfs dev: /dev/sdb4 
           maj-min: 8:20 
Swap:      Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default) 
           ID-1: swap-1 type: zram size: 3.79 GiB used: 19.2 MiB (0.5%) priority: 100 dev: /dev/zram0 
Sensors:   System Temperatures: cpu: 29.8 C mobo: 27.8 C gpu: nvidia temp: 28 C 
           Fan Speeds (RPM): N/A gpu: nvidia fan: 33% 
Info:      Processes: 255 Uptime: 5m wakeups: 0 Memory: 3.79 GiB used: 2.39 GiB (63.1%) Init: systemd v: 249 tool: systemctl 
           Compilers: gcc: 11.1.0 clang: 12.0.1 Packages: pacman: 1886 lib: 527 flatpak: 0 Shell: fish v: 3.3.1 
           running-in: qterminal inxi: 3.3.06 

So, my Lxqt-Kwin is acting weird. I didn't even update the last week and for the last couple of days I didn't even used the system, so I suppose it's not my fault. This is not the first time it happens as well, it occurred before, but I got to solve it by rolling back to a snapshot. This time, all snapshots appear with the same issue as the main system, which is:

My DE seems kinda broken. Some functionalities (mostly animations) are totally off and where the Cairo-dock appears it leaves a black strip 1.5x it's size. I still can change on which virtual desktop I am, and I still can go for some shortcuts like alt+tab to cycle trhough windows.
But other stuff like calling the menu with the super key or opening the virtual desktop grid I can't do. Didn't test all stuff, but I suppose this is enough info.
The system itself is working perfectly tho, I'm logged in right now and I could do a successful UPDATE. Sadly, the update didn't resolve my problem.
I was thinking, I saw a button on Garuda Assistant that says "reinstall all packages", but I thought it would be a little bit overkill. I also don't know which packages set up the DE so I can't do a reinstall only on it.

I also wanted to try to simply restart the DE, but I couldn't find any shortcut or command for lxqt-kwin, and logging in and out also have no effect.

Thanks for your attention and for all and any help in advance!

Please check if your Compositor in System Settings shows any error (e.g. "OpenGL compositing (the default) has crashed KWin in the past..."), and if so reset the protection / acknowledge it.

5 Likes

Guess what, filo does it again. Let me logout and in again to apply the changes and see if it works. But the message was there, indeed

Indeed, problem solved. Thank you so much once more, Filo!

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