Greg Wooledge composed on 2020-04-07 10:20 (UTC-0400): ... > 2) dmesg | grep -i firmware
> See if the kernel is trying to load any firmware and failing. If so, > you will probably want to install some of the non-free firmware packages > to support your hardware. This may involve adding contrib and non-free > to your sources.list. I forgot about the subject of firmware. It could be firmware-amd-graphics has not been installed. Also needed are libdrm-amdgpu1 and xserver-xorg-video-amdgpu for optimal operation with a Topaz XT. -- Evolution as taught in public schools is religion, not science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/