A proper reboot with todays updates seems to have made this problem vanish. Xorg is back to 4-8% CPU time even with composer enabled.
-- Xorg eats 100% CPU https://bugs.launchpad.net/bugs/432287 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs