Does the problem only happen when playing video? I can see the Discord snap is flooding your system log, which can cause freezes (usually every 5 seconds) when the kernel needs to sync/flush to disk. So please try uninstalling the Discord snap and tell us if the situation improves.
If the problem keeps happening then please run 'top' to check for any high CPU users, and please also run (while the problem is happening): journalctl -b0 > journal.txt and attach the resulting text file here. ** Package changed: xorg (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1899853 Title: Screen freezing To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1899853/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs