I am using Debian/Raspbian on my RPi but few days ago it started to freeze. By freeze I mean, it is running headless server and I see line raspberry login: _ and cursors blinks. But once daily if freezes and cursor does not blink anymore. Machine is unreachable and I must power cycle it to restart it.
How to find out what is causing it? When sometimes my RPi freezed in the past (once per 6-12 months) it showed me for example journal error or some kind of meaningful error message. But now nothing, just cursor stops blinking. I am pretty helpless without any error message. And nothing is in logs, too.
