Did my regular dist-upgrade today, and could not use a mouse and a keyboard after reboot. USB stopped to work. Next, I did a clean reinstall of Ubuntu-20.04.03, and again, after I dist-upgrade'd the mouse and keyboard were gone.
I can repair USB by booting into the previous kernel 5.11.0-27. When comparing the boot sequences in journalctl, the difference seems to start at message
xhci_hcd 0000:00:14:0: Abort failed to stop command ring: -110
xhci_hcd 0000:00:14:0: xHCI host controller not responding, assume dead
xhci_hcd 0000:00:14:0: HC died; cleaning up
xhci_hcd 0000:00:14:0: Timeout while waiting for setup device command
I also tried to update the firmware at my Gigabyte Z370P D3, did not help.
Appears, the same problem appeared TODAY with Ubuntu 18.04 and a different kernel: Lost my mouse and keyboard on upgrade I cannot comment there, and I have no answer either.
I continue booting to the old kernel, but what should I do?