I need to learn which logs have the system/app info I am looking for when troubleshooting Kubuntu 23.04 and how to use them to find what caused a freeze requiring a reboot. Searched but did not find anything relevant to newer systems. I have a suspicion that Barrier is causing the frequent freeze, but need to confirm that. Before I go spending time looking through them and trying to find the specific event, I could use some help in using the right log, using the best method to analyze said log, etc.
The Barrier logs I have set to debug and while I do not understand some of it, the one thing I notice is this line: can't read property 600 on window 0x02400031
and there will be 3-4 of those entries followed by more normal info and then again the same entry but maybe 15 of those lines. Finally, there will be about 30-40 of that line. But I still do not know what that means or if it is the cause of the freeze. Then a few minutes later there is this:
can't read property 600 on window 0x08c0008c [2023-07-09T09:11:25] DEBUG1: flagging X error: 3 - BadWindow (invalid Window parameter)
But I do not know if this is the cause of the system freeze. I just figured comparing the logs/timestamps between Barrier and the appropriate system log would help me narrow down if it is indeed Barrier or a different issue.
You might try looking in /var/log/Xorg.0.log. You may find some additional information on why you are receiving this message.
No idea if it helps. Just a thought …
It also might me a good idea to install lnav and have a look at what this log file viewer has to say about “freeze” or “barrier”.
You can punch in search words with “/freeze” or “/barrier” and with “N” and “Shift + N” you can search for any occurences of the serach word forwards and backwards.
Cheers from Rosika
P.S.:
I think taking a look at @nevj ´s link will surely be worth while.
Thanks, @nevj. I am perusing them now and I just knew there had to be something here, but my “search” for using logs to troubleshoot did not point to this.
