I have this same problem with the UI freezing up. It always occurs when I resize a window, although not every time I resize a window. The app running inside the window isn't always the same, it is more often a code editor or a web browser, or a zoom meeting. The result is that the UI freezes up completely, although audio continues running so if I am on a video call I can still talk to people, or if I am playing something with audio, I can continue to hear it. Something seems to be going on with the machine because after a few seconds the I hear the fan turning on.
I'm running an up to date 20.04.1 LTS and the kernel is 5.4.0-58-generic. GNOME version is 3.36.8, windowing X11 and it's a 64-bit install. My laptop is Hewlett-Packard HP ZBook 17 G2/2255, BIOS M70 Ver. 01.12 09/23/2015 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574612 Title: Random hangs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574612/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
