Since a few days ago my computer is giving me a black screen when I boot it up. At first, I could still start it in recovery mode. All info I could find to fix it points to the graphics driver (in my case for AMD Radeon RX 480).
I tried to reinstall the amdgpu driver, but somehow it seems not to become active when checking:
lsmod | grep -e amdgpu gives no output. Also
lshw -c video shows no active driver. I tried with oibaf drivers, but with no effect.
Then I tried setting 'quiet splash nomodeset' in
sudo gedit /etc/default/grub. However, after that I can't login in recovery mode anymore either; I now get a quick flashing screen of my desktop background for a few seconds and then a black screen with a cursor. I can still open tty2 with Ctrl+Alt+F2.
Could someone point me in the right direction? I've searched for info, but am a bit lost now.