Thomas, I'm also having Xorg/compiz CPU usage issues for which I submitted bug report, and I was wondering if you could follow the steps I outlined and see if you get similar results: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1337749
Basically on a fresh boot, launch "top" in a terminal to monitor CPU usage. Then launch a Nautilus window and start moving it around, noting CPU usage. Then resize the window, and try moving it around and see what happens with the CPU usage. For me, CPU usage jumps from 4% to around 30-40% (before/after the resize) using the open source radeon driver. With fglrx it starts higher at around 15-20%, and jumps to 60-70% after resizing. Even just scrolling down a page in Firefox results in ~70% CPU usage. -- 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/1293384 Title: Compiz CPU usage dramatically increased in Ubuntu 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1293384/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : compiz@lists.launchpad.net Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp