When using tumbleweed the system randomly hangs and I have to use sysrq reisub to restart the system, where can I find any logs to find out what does this?
In the journal. View it via YaST or use command line and journalctl
It depends on the reason why it hangs. In the worst case - nowhere (because when it hangs it cannot also write anything anywhere).
Does any keyboard LED blink when it hangs?
My experiences with Linux/Tumbleweed hanging always proved to be running out of memory.
You will not find that using the logs, just put the KDE system monitor history tab somewhere on the screen so you can see the memory usage when the problem happens. Alternatively you can run something likje “free -h -s 5” on the console buit once more make sure that is visible when the problem happens.
Ok, I filled up the ram, and it hung.
Keyboard lights not blinking, only way to restart is sysrq or power buttons.
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Good you found it.
Try to find out which application it is and if it is “legal”, sometimes applications have a memory leak and memory keeps on increasing and increasing.
If it is “legal” you best option is to increase the amount of memory you have, for a typical desktop that is easy and cheap enough.
What I did was:
That worked fine but in the end I also doubled the amount of memory .
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earlyoom seems to do the job
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