It's *probably* a kernel bug and probably already fixed in a newer kernel. So you might want to try one of those:
https://kernel.ubuntu.com/~kernel-ppa/mainline/?C=M;O=D -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1888571 Title: [Ice Lake] Screen flickering and glitching after install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1888571/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
