I recently upgraded dom0 to the latest kernel (5.15) but it wouldn’t boot. I Just get a blank screen after the grub splash.
I then tried selecting the older kernel (5.10.112 I think it was), and that booted fine.
I waited a bit until today and figured I’d see if there was a kernel update and there was. I updated via cli with “sudo dom0-qubes-update”. After the update completed (was getting ready to reboot), I started seeing some odd artifacts in the main menu, lines between entries as I moved around. Hmm. Then my system stopped responding and the screen shut off. Ruh roh. Tried a power cycle and now all I get is the grub menu.
I thought I remembered there being a "rescue qubes installation option in the install image, so that’s going to be my next step.
Any ideas what happened or what direction I should be heading in? This isn’t my daily driver, so this is mostly just annoying and I’ve got backups, but I was about to get back to using it more heavily, so I’d like to fix it rather than wipe/reinstall. And more to learn this way.