Computer worked fine for a couple of weeks.
Hardware specs:
- CPU: AMD Ryzen 9 3900X 12core
- Memory: 64GB Corsair
- GPU: Sapphire Radeon RX 5500 XT NITRO+ 8GB
- Motherboard: ASUS ROG Strix X570-F GAMING
- Wireless keyboard and mouse
- monitor: 4K 60Hz
Problem:
Computer freezes. It freeze most frequently when watching video in browser, after a while sound stops, a few seconds later computer is in this state:
- I can move the mouse-cursor, but clicking does nothing.
- Ctrl + Alt + F1 does nothing
- Short pressing the power button does nothing
- Picture is frozen except for the mouse cursor moving
- Same problem when connecting another keyboard and mouse
- SysRq REISUB works
Debugging different resolutions:
- No Problems: Resolution 1920 x 1080, Refresh rate: 60Hz Scale: 100%
- Fails: Resolution 3840 x 2160, Refresh rate: 60Hz Scale: 100%
- Fails: Resolution 3840 x 2160, Refresh rate: 60Hz Scale: 125%
- Fails: Resolution 3840 x 2160, Refresh rate: 60Hz Scale: 150%
- Fails: Resolution 3200 x 1800, Refresh rate: 60Hz Scale: 100%
- Fails: Resolution 2560 x 1440, Refresh rate: 60Hz Scale: 100%
Debugging:
- htop: CPU is below 10%
- watch sensors: CPU heat is around 50C, CPU power consumption is about 5-10W
- tail -f /var/log/{messages,kernel,dmesg,syslog}: didn't give any messages that looked interesting, last error before crashing was some DNS stuff.
Does anyone have a suggestion how to debug this problem?
Best Answer
In /etc/profile, I would add this:
setxkbmap -option terminate:ctrl_alt_bksp
Then, logout and login.
The next time you freeze, you can try entering Ctrl-Alt-Backspace to restart the desktop instead of having to reboot. In addition to getting you back to business faster, it tells you that X is still alive during a freeze. Not sure why "ctrl + alt + F1 does nothing".
A similar situation is also a current challenge for me on a Raspberry Pi 4 8GB with the Xubuntu desktop.
Good luck with a resolution.