--- Comment #29 from Ingo Göppert firstname.lastname@example.org --- (In reply to Takashi Iwai from comment #24) [...]
So, could you check the following?
Uninstall kernel-firmware-amdgpu package once % zypper rm -u kernel-firmware-amdgpu
Remove the stale files in /lib/firmware/amdgpu (if any) % rm -rf /lib/firmware/amdgpu
Directory was removed completely.
- Install the latest package from TW % zypper in kernel-firmware-amdgpu-20201005
Done. Only the first time booting with the new firmware the external monitor was not working (internal was ok). I had to put the laptop out of the docking station and put it in again. Since then everything works fine. Done several reboots, no problems with the display anymore.