On Mon, Apr 13, 2020 at 10:36:19PM +0200, Ludovic Courtès wrote: > Florian, could it be uvesafb messing with the graphics card?
Yes, maybe, if amdgpu and uvesafb both try to modeset. Apparently yes, if it did not happen for rc1. Please try adding a kernel parameter modprobe.blacklist=amdgpu so only uvesafb is active. (To do that, press the E key in GRUB and move the cursor to the end of the line starting with linux. Then type modprobe.blacklist=amdgpu at the line’s end.) I wonder whether it’s better to 1) revert uvesafb and break other systems again, including other AMD ones, 2) add modprobe.blacklist=amdgpu to the default kernel parameters, although I’m not sure if uvesafb can replace amdgpu for every screen. Regards, Florian
