In the past when people had trouble with HP all-in-one screens, the solution was:
1. Beware! Backup you data! You will likely need to reinstall Ubuntu after this. 2. Go into the BIOS and toggle the legacy mode/secure boot settings. 3. Reinstall Ubuntu. ** Summary changed: - [Sandy Bridge] Flickering white lines on screen + [HP Omni 120-2110il AIO] Flickering white lines on screen ** Changed in: linux-hwe-5.11 (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1964916 Title: [HP Omni 120-2110il AIO] Flickering white lines on screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.11/+bug/1964916/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs