Yeah the extensions panel in gnome-tweaks is broken (bug 1718850). Please try using 'gnome-shell-extension-prefs' instead. Now disable all non-Ubuntu extensions, and reboot. Does the problem still happen?
** Package changed: ubuntu => gnome-shell (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1879665 Title: Xorg freeze - Cursor flicker To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1879665/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
