Here is my .xsession-errors file after the workaround in comment 13.
** Attachment added: "xsessions erroros file after CCSM workaround" https://bugs.launchpad.net/unity/+bug/963093/+attachment/2934323/+files/xsession-errors -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/963093 Title: Unity 5.8: Flickering and corruption on Unity UI elements To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/963093/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs