Thanks for the bug report. Most likely the problem is an HDMI connection problem. Please try a new HDMI cable if you can. If you can't then please try temporarily running the external monitor at a lower resolution to see if the flicker then goes away.
If the flicker still persists then please attach a video of the issue (recording on a phone is fine). ** Tags added: flicker multimonitor ** Package changed: xorg (Ubuntu) => linux (Ubuntu) ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2062950 Title: RE: Flickering problems on external monitor with HDMI after installing Ubuntu 23.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2062950/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs