I've seen a lot of posts about a blinking cursor on boot, or after install, but not at random times.
I randomly have annoying crashes while doing nothing more than browsing the web. This time I can only remember I was watching a YouTube video. At the same time the sound stopped and screen went out, going to text mode with nothing more than a cursor at the top left. System load was low (both CPU, memory and disk). I don't usually have high temperatures, and the fan was not at a high speed. It's a new laptop with Debian 12, a fresh install from 1 month ago. This same computer works fine with Windows 11 and on Windows it gets a higher load. Memtest86 and memtester don't show any errors, and the S.M.A.R.T. information about the hard disk looks fine
I check the system log (with journalctl) and can find nothing there. Where could I find logs about the crash or more information about what does it mean when the system crashes in this way?
EDITS:
It looks like a problem with the hard disk, however badblocks and SMART don't show any errors
I tried to have a running journalctl --follow in a SSH connection from other computer, just in case some info for the crash was not being written to the logs but could maybe be sent through the network and be seen from the SSH client, but nothing appears there after the crash
EDIT:
Sometimes when this happens, instead of just a cursor I get:
[FAILED] Failed to start vboxdrv.service VirtualBox Linux kernel module
on the first row of the screen, and nothing else. No key combination works or even the Caps Lock / Num Lock LEDs light up when pressing them
Could this VirtualBox message be related to the crash or was it just there beforehand?
