How to track from the logs what crashes Ubuntu 20.04?

Question

linux

My newly installed Ubuntu 20.04 keeps crashing (before it was Windows 7 - and everything was fine).

Suddenly there are multi-colored rectangles on the screen, accompanied by a cacophony from the speakers, after a hard reset (turn off-on) - everything works fine.

I want to look in the logs - what is wrong there - is this possible?

In what log to look?

Is it possible to somehow specifically configure the system to monitor this particular situation (most likely a glitch in the graphics drivers, at least in Windows I would say what it is)?

Now I found it in the log

[    0.856906] kernel: RAS: Correctable Errors collector initialized.
[    4.323800] kernel: EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro

could this be the one?

Thank you!

Answer 1

Usually Intel has one of the most stable drivers.
For logs - look in /var/log/kern.log
Check the memory: https://linuxhint.com/run_memtest_ubuntu/
If the memory is OK, then the following stress test (heats the processor):
sudo apt install stress-ng
https://wiki.ubuntu.com /Kernel/Reference/stress-ng
stress-ng --cpu 2 --vm 4 -t 5m

Answer 2

Hold the cheat sheet