Heres another datapoint for this problem. I was running 9.10 and switched monitors to a 1440x900 monitor and compiz started hogging cpu. So I upgraded to 10.10 but no joy. Googling around someone mentioned the same problem with a laptop and external monitor and that disconnecting wireless then reconnecting cleared it up at least for a while. So I disabled my wired connection, re-logged in and so far compiz is back down to 1% cpu. Since I know little about compiz Im not sure why it would make a difference but it sure did.
Maybe an strace of compiz would provide a hint. -- You received this bug notification because you are a member of compiz packagers, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/737454 Title: xorg high cpu usage with compiz while using top command; goes away when compiz is killed _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp