Yep see exactly the same thing here on a Dell Latitude 7440 with Haswell i7 4600U.
As an extra data point, I'm running a newer kernel: uname -a Linux e7440 3.15.0-031500rc2-generic #201404201435 SMP Sun Apr 20 18:36:18 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1322751 Title: Compiz running on Intel Haswell GPU has 100% CPU usage when computer is locked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1322751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
