That's good news. Now please try these while the image is open:
xrandr --output DVI-I-1 --set "dithering mode" "off" or xrandr --output DVI-I-1 --set "dithering mode" "static 2x2" and change 'DVI-I-1' if you are using a different connector now. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1819023 Title: [nouveau] Scrolling screen flicker, especially on default Ubuntu lock screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1819023/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs