Comment # 21 on bug 1233134 from Heiko Rommel

Created attachment 878591 [details]
dmesg with working 5.14.21-150500.55.83 and manually loading amdgpu

This is how the output has been created:

* have "blacklist amdgpu" in /etc/modprobe.d/local-dontload.conf 
* rebuild the initrd with "dracut --omit-drivers amdgpu --kver
5.14.21-150500.55.83-default -f"
* boot kernel 5.14.21-150500.55.83-default with options "loglevel=7
drm.debug=0x1e"
* after successful boot, verify that the driver amdgpu was NOT loaded
automatically
* run "modprobe -v amdgpu"
* capture the entire output of dmesg