Hello, I have the same issue on a fresh install of Lubuntu 20.04 on sddm login screen.
GPU = Intel 82945G -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1865837 Title: Lubuntu 20.04 qa-test install; flashing at sddm greeter when mouse at top panel (pre-login) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sddm/+bug/1865837/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs