You seem to be using software rendering and have no graphics driver installed. Please run:
lspci -k -d ::0300 What does it show? If your system needs a custom kernel driver (like Nvidia for example) then it's possible that hasn't been built for your custom 'realtime' kernel. ** Package changed: gnome-shell (Ubuntu) => ubuntu ** Changed in: ubuntu Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2106756 Title: OS slows down after the latest LTS version update. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/2106756/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs