Problem does not happen when booting from linux kernel 4.8.0-34-generic; CPU usage is slightly higher than Metacity, no significant kworker threads.
It does happen with updated kernel 4.13.0-25-generic (previously -21). When I went to recovery mode for 4.13.0-25, tried to select failsafeX graphics, then resumed normal boot, resolution was messed up and Compiz and Xorg were at 50~60% of a CPU instead of 5~8%. Unfortunately, did not note whether there was a high kworker thread. Hope this helps. I don't have any other kernels installed. Could someone please at least try to verify this? If they don't experience it, that's useful to know as well. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1744515 Title: Compiz flashback has high-CPU kworker thread when screen updates To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1744515/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
