[Wayland][Xwayland] “Xwayland glamor: GBM Wayland interfaces not available”

Help
,
1

I recently purchased a new monitor, the LG UltraGear 27GS60QC-B. After setting it up, my Plasma desktop crashed the first time I pressed Alt+Tab. The screen froze, and then kwin restarted. Since then, all animations have been disabled; for instance, when I press Ctrl+Meta+Arrow, there is no animation.

Additionally, the fonts appear very sharp, which is unusual. I switched to X11, and everything worked fine. However, after a recent OS update, X11 is no longer supported, and I am on Plasma now, so all problems are dancing here.

Here is my setup:

Operating System: Arch Linux 
KDE Plasma Version: 6.4.4
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Kernel Version: 6.16.3-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × 12th Gen Intel® Core™ i3-12100
Memory: 16 GiB of RAM
Graphics Processor: AMD Radeon RX 580 Series

Environment:

- Desktop: Plasma 6.4.4 / KWin 6.4.4
- Xwayland: 24.1.8
- Mesa: 25.2.1 (also tested 25.1.7)
- libdrm: 2.4.125
- wayland / wayland-protocols: current (include versions)
- Kernel: 6.16.3.arch1-1 (also tried custom xanmod before)
- GPU: AMD Radeon RX 580 (Polaris10)
- Driver: amdgpu (RADV works; Vulkan sees the GPU)

the result of glxinfo -B | grep -E 'Accelerated|OpenGL renderer':

Accelerated: no
OpenGL renderer string: llvmpipe (LLVM 20.1.8, 256 bits)

So any help? If you need any additional information just let me know.

Thanks in advance

2

My understanding was that it is simply not installed on Arch by default but can still be installed on request?

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3

Thank you for your time and response.
While installing X11 serves as a temporary solution, I am looking for a way to either resolve the issue or identify the bug so that I can submit it to the development team for a fix. Before switching to X11, I was working with Wayland, and the problems began after I installed my new monitor. So I decided to use X11 to temporary fix my problem because those days I was so busy.

Thanks again dear @krake

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4

This is the propblem as you shouldn’t be using software rendering on your GPU. It explains the lack of animations, at the very least.

This would be a kernel/driver/configuration thing, I will guess from one of your recent updates.

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5

Thank you for your time and response.

Do you know a way to solve the problem? would you please give me a hand or any clue?

Thanks again dear @claydoh

6

Sorry, no, I do not. This will be something specific to Arch and not related to KDE, and I am not very familiar with this distro.

But I am sure a distro-specific support channel would be able to, if no one here can.

7

No it’s not related to Arch, it’s about Plasma. for producing error log I pressed Alt + Tab now and my screen freeze again, now let’s check the log:

journalctl --user --since "2 minutes ago" \
| grep -Ei 'kwin|kwin_wayland|drm|amdgpu|nvidia|i915|gpu|xid|ring|reset'
Aug 28 20:58:10 unrivaled kwin_wayland[1058]: kwin_wayland_drm: The main thread was hanging temporarily!
Aug 28 20:58:21 unrivaled kwin_wayland[1058]: kwin_wayland_drm: The main thread was hanging temporarily!
Aug 28 20:58:23 unrivaled kwin_wayland[1058]: kwin_wayland_drm: The main thread was hanging temporarily!

As you can see it’s about Kwin or Wayland. That’s why I asked here.

8

But the issue of using llvmpipe instead of the video driver, this is not a desktop issue. Some firmware or kernel module is not loading properly.

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9

Thank you so much.

So now I know the problem is not related to Kwin or Wayland. It will help a lot. I will try to handle this. Maybe I will share what I did with you guys.

Sincerely

10

@krake @claydoh

It fixed now.

I just asked AI and it told me to enter these commands:

grep -A5 ‘^\[Compositing\]’ ~/.config/kwinrc || true:

[Compositing]
Backend=QPainter
Enabled=true
GraphicsApi=vulkan
LatencyPolicy=High

then:

kwriteconfig6 --file kwinrc --group Compositing --key OpenGLIsUnsafe false
kwriteconfig6 --file kwinrc --group Compositing --key WindowsBlockCompositing false
kwriteconfig6 --file kwinrc --group Compositing --key Enabled true
kwriteconfig6 --file kwinrc --group Compositing --key Backend OpenGL

After that I restarted my GNU and now everything works amazing. Here is the result now:

grep -A5 ‘^\[Compositing\]’ ~/.config/kwinrc || true
[Compositing]
Backend=OpenGL
Enabled=true
GraphicsApi=vulkan
LatencyPolicy=High
OpenGLIsUnsafe=false

Thanks everyone and hope these helps other guys

Sincerely

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