A kernel patch that fixes this issue was finally released in May 2019. It eventually found it's way into Ubuntu 18.04 and later releases. I've had difficulty checking if it is Ubuntu 16.04.7 or earlier update to Ubuntu 16.04 but official support for Ubuntu 16.04 ended in April 2021.
Are you still experiencing this bug? If you are, on which version of Ubuntu is it occurring and what is the output of "uname -a" ? ** Changed in: 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/1772234 Title: Ubuntu 16.04 Radeon X1600 screen flickering To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1772234/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs