Sorry, but it turned out that the flickering-issue is NOT really fixed with the upstream-kernel. Sometimes a boot again ends in a flickering screen as before. Now I have the following scenario: - boot 14.04.5 LTS with kernel 3.13.0-157 -> screen is ALWAYS o.k.; NO flickering - boot 18.04.1 LTS with upstream-kernel 4.19.0-041900rc3 -> USUALLY the screen is o.k; BUT SOMETIMES the screen flickers as before I found no special reason that may cause/avoid the flickering; just reboot and watch ... and if the screen flickers, reboot again and the screen may be o.k. ...
So I replaced the tag "kernel-fixed-upstream" by "kernel-bug-exists- upstream". -- 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