The bug have been reported upstream: https://bugs.freedesktop.org/show_bug.cgi?id=108514
https://forums.linuxmint.com/viewtopic.php?t=229387 suggest the bug could be "fixed" by creating /usr/share/X11/xorg.conf.d/20-radeon.conf with: Section "Device" Identifier "Radeon" Driver "radeon" Option "AccelMethod" "glamor" Option "TearFree" "on" EndSection Someone could try? ** Bug watch added: freedesktop.org Bugzilla #108514 https://bugs.freedesktop.org/show_bug.cgi?id=108514 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1791312 Title: ubuntu 18.04 flickering screen with Radeon X1600 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1791312/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs