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

Package: src:linux Version: 5.14.16-1 Followup-For: Bug #998799 Just tested the new kernel image on my AMD Ryzen 5 2400G and I see the same problem. Initially I thought the system was dead due to the long delays introduced in the boot process. Here are the relevant lines from the kernel log:

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

Source: linux Source-Version: 5.15.1-1~exp1 Hi, On Sun, Nov 07, 2021 at 10:02:30PM +0100, Paul Menzel wrote: > 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

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

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