I have a Dell XPS 15 notebook with a docking station that is almost always attached. So I basically never use the internal display.
Yesterday I was preparing for my upgrade to Fedora 35. So I updated my Fedora 34 packages and rebooted to make sure everything is still working and everything was fine indeed. So I started downloading the package for the upgrade to 35 which I was planning to do now. The download went fine and I put the notebook to hibernate then. This morning I took my notebook with me (without the docking station of course) and this is what happened:
I turned the notebook on and was greeted with grub as usual and selected the latest kernel.
Then the screen went blank and started showing weird graphics artifacts on the whole screen (horizontal lines, random noise etc). I then blindly typed in my disk decryption password and managed to boot back into my hibernated session (no black screen or glitches anymore). I then decided to reboot with the previous kernel to see if the graphics glitches go away then. But it just got worse. Now after booting the screen remains black/glitched. I can still interact with the system e.g. the volume-up shortcut still works and makes its usual beep sound. I can also switch to the tty modes, but I still don’t get display output.
I tried rebooting using the rescue mode with the same result and then I tried booting with the latest kernel again, this time removing every custom kernel parameter I’ve been using. But the problem is still not going away.
Any ideas what I can do now?
The notebook as an AMD GPU and an Intel iGPU btw.