Comment 12 for bug 1981559

Thanks.

The log in comment #11 indeed shows amdgpu kernel driver errors in the time range you mention. So this is a kernel bug.

Please try these two kernels separately:

  https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/2022-07-08/amd64/
  https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.18.11/amd64/

When testing each you need to download all the .deb files and install them together:

  sudo dpkg -i *.deb