Can you test the mainline kernel? http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15-rc8
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1743427 Title: Black screen with iMac 2011 and ATI Radeon 6970M To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743427/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
