To who this may concerned,

I've met some problem on OpenGL applications.

The screen freezes, but the sound and interaction are normal, except that the
screen output does not change. You can switch to the kernel terminal with the
Ctrl-Alt-Fx key combination, but even after the process that caused the problem
is killed, the screen display still freezes, and does not recover.

Kernel has message like this:

```
[  111.900829] Asynchronous wait on fence 0000:00:02.0:kwin_x11[2517]:e88 timed
out (hint:intel_atomic_commit_ready [i915])
[  114.621866] i915 0000:00:02.0: [drm] Resetting rcs0 for preemption time out
[  114.621883] i915 0000:00:02.0: [drm] valley_x64[3756] context reset due to
GPU hang
[  114.651360] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:1:85dffffb, in
valley_x64 [3756]
[  115.549923] i915 0000:00:02.0: [drm] Resetting rcs0 for preemption time out
[  115.549949] i915 0000:00:02.0: [drm] valley_x64[3756] context reset due to
GPU hang
[  115.582029] i915 0000:00:02.0: [drm] GPU HANG: ecode 9:1:87f97cf9, in
valley_x64 [3756]
```

I've also found a similar bug a on older kernel, see:

https://bugzilla.redhat.com/show_bug.cgi?id=1843274

but it should have been fixed on the latest kernel.