Originally Posted by silisk
Sorry, I should have been more clear: I still see messages on the serial line, but I just can't input anything.
Edit: Adding no_console_suspend to the bootargs solves the problem
Does anyone know the root password? Single user mode works, so I just replaced it for the time being.
Yeah, the power management is a bit aggressive, and the device suspends to ram after a short timeout, as you can see from dmesg, but I didn't analyze this any further. Regarding the password, a quick run of john didn't work so I gave up: by judging from update passwords, it's probably a bunch of random characters.