Finally managed to lock myself out of Qubes. Decided to add a second monitor. I use a KVM switch to switch between my PC and a work laptop. The second monitor is connected directly to the PC for the time being. After connecting the second monitor, I had trouble booting into Qubes at all; probably …

Didn’t work. Only changes were that usbcore.authorized_default=0 was added to the end of the line specified in the GRUB edit file and the keyboard/mouse policy files were screwed up again. (EDIT) IOMMU became disabled. That was the problem. Figured it out by trying to start sys-usb from the termin…

No Mouse/Keyboard Access At Login Screen

User Support

tzwcfq July 1, 2022, 12:12pm 2

You can try to boot with USB qube disabled to fix your problems in dom0: