Bug#991453: Info received (Bug#991453: Acknowledgement (linux-image-5.10.0-8-amd64: Radeon 6800 XT: 100% GPU core usage & 74 Watts when idle))

[piorunz]

I can confirm this bug can be fixed by reverting this "drm/amdgpu/gfx10:
enlarge CP_MEC_DOORBELL_RANGE_UPPER to cover full doorbell." commit
mentioned in bugzilla.kernel.org discussion.
I downloaded Debian 5.10 kernel, fixed one line in
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c file, compiled kernel and
rebooted, and now I am back at 0% GPU, 0% Mem load, with lower
temperatures and lower power usage. Please push it to next 5.10 iteration.