I am starting a new thread on this, as I haven’t made any headway at all with this.
I have a Dell xp3 13 2020, running Fedora 33. When I upgraded the kernel to 5.9, as a part of the normal uipdate process, on reboot, I get a crazy looking rainbow-pattern screen, which comes up right away, even before I am asked for my password for luks. I can enter the grub menu with . Everything works well on 5.8, which I’ve kept. It has intel Xe graphics, not nvidia, so that’s not an issue.
What I’ve tried, all with the same result:
- Booting with nomodeset
- Booting with 1 and 3 options (text console, emergency mode) in grub
- deleting rhgb quiet in grub
- Adding rd.break to boot into emergnecy initramfs disk
- Downloaded last night’s most recent build of 5.10 fromn koji, and installed it—same result.
UPDATE: I was able to boot into 5.9.1 from an Opensuse tumbleweed USB stick.
At this point, I am running out of ideas. about what to try next.
Others with the same machine have not had this problem.
See Dell XPS 13 2020 Fedora 33 hangs on boot after kernel update video issue for previous discussion of this issue.