System freeze-up

[Moltke]

While in the desktop, xfce, press Ctrl + Alt + F1 to jump to a TTY(command line mode) login with your credentials; username and password. Then run the journalctl command, but since you can't copy/paste the output in that mode, you'll have to redirect it to a file, like this

Code:

sudo journalctl --priority=err --since "30 min ago" > journalctl_output

name it whatever else you want to, the file will be saved in your home directory, if by any chance you get no output, or it is too short, like 3 lines short or something like that, you can, 1) increase the time, i.e. "60", 2) run without time which will print the whole thing in which case you'll have to attach the file in your reply since it'll be very long for coping/pasting, once you've done that,  press Ctrl + d to logout from that session, then press Ctrl + Alt + F7 to return to the desktop session, find the file, open it in a text editor and copy/paste the output here, or attach it if it is too long as explained above. The system shouldn't freeze in that mode, and if it does, then the problem might be a graphics related thing, I think. The output of journalctl might give us a hint whether it is or not.