Since few weeks my system (Ubuntu 23.10) often freezes/hangs and after few seconds reboots (usually, if it happens, it happens in the first minutes after powering up and after it reboots it does not happen anymore that day). The hardware is pretty new (< 6 month) and the temperatures are ok. The happen in any situation, even if I'm not at the computer with no applications running.
I guess I know which log files I have to look, and I read a lot of questions about log files, example:
but those log files are huge!
Even "grepping" for error lead to hundreds of lines and most of them seem not directly related to the hangs.
Here I'm asking which keywords should I look for in the log files to find out the cause of the reboot.
UPDATE
Hardware information:
- AMD Ryzen™ 9 7950X
- 4x VENGEANCE® 16GB DDR5 DRAM 5200MT/s CL40
- ASUS ROG STRIX X670E-E GAMING WIFI
- NVIDIA GeForce RTX™ 4080
- 2x Samsung SSD 980 PRO 500GB
The last reboot command shows TWO running items!
$ last reboot
reboot system boot 6.5.0-26-generic Mon Apr 8 08:22 still running
reboot system boot 6.5.0-26-generic Mon Apr 8 08:20 still running <--- here it rebooted after a freeze!
reboot system boot 6.5.0-26-generic Sun Apr 7 16:25 - 19:17 (02:51)
reboot system boot 6.5.0-26-generic Sun Apr 7 16:17 - 16:25 (00:08) <--- also here
reboot system boot 6.5.0-26-generic Fri Apr 5 20:47 - 22:37 (01:50)
...
$ last
mark :0 :0 Mon Apr 8 08:22 still logged in
mark seat0 login screen Mon Apr 8 08:22 still logged in
reboot system boot 6.5.0-26-generic Mon Apr 8 08:22 still running
mark :0 :0 Mon Apr 8 08:20 - crash (00:02)
mark seat0 login screen Mon Apr 8 08:20 - crash (00:02)
reboot system boot 6.5.0-26-generic Mon Apr 8 08:20 still running
