Public bug reported: On upgrading from Ubuntu Mate 20.10 to 21.04 I observed screen flickering.
I observed the same on clean install of Ubuntu Unity. I eventually fixed this by following this advice: https://askubuntu.com/questions/1231441/ubuntu-screen- flickering/1231443#1231443 Create file /etc/X11/xorg.conf.d/20-intel.conf : Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "sna" Option "TearFree" "true" EndSection My graphics card is Intel. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1921595 Title: Screen flickers in Ubuntu Mate 21.04 and Ubuntu Unity 21.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1921595/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
