Bug#998799: linux-image-5.14.0-4-amd64: Regression causing graphics slowness (`amdgpu: failed to write reg`)

[Paul Menzel <pmenzel@molgen.mpg.de>]

Package: linux-image-5.14.0-4-amd64
Version: 5.14.16-1
Severity: important
Forwarded: https://gitlab.freedesktop.org/drm/amd/-/issues/1770
Tag: fixed-upstream


Dear Linux folks,


The upgrade from 5.14.12 to 5.14.16 makes systems with AMD graphics 
devices unusable caused by a regression in 5.14.15 [1].

    amdgpu 0000:26:00.0: amdgpu: failed to write reg 28b4 wait reg 28c6
    amdgpu 0000:26:00.0: amdgpu: failed to write reg 1a6f4 wait reg 1a706

The fix was supposedly applied to Linux 5.14.17, so it’d be great if you 
uploaded new packages.


Kind regards,

Paul


[1]: https://gitlab.freedesktop.org/drm/amd/-/issues/1770