I can't see any crashes around the time before 12:50:17 but also if you're using LXQt then I wouldn't know what programs to look for...
I suggest repeating the steps in https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment in case the freeze is caused by something crashing. Failing that, please attach more syslogs from future crashes in case the cause of the issue becomes clearer. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1951683 Title: Freeze To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1951683/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs