Neil Rodgers' workaround above (#48) eliminates, or at least drastically reduces, this problem for me. Neil, thanks!
For reference, I am running 14.04 64bit up to date on an older Dell Optiplex;using NVidia drivers 3.34.21 on a GeForce GTX 750/PCIe/SSE2 because Nouveau doesn't yet support this card. I first posted over on https://devtalk.nvidia.com/default/topic/737275/geforce-750-ubuntu-14-04-3-34 -drivers-screen-glitches-in-firefox-gmail/#4205618 and eventually received a response to look at this bug. -- 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/1288747 Title: [334] Parts of the UI randomly flicker when moving the mouse To manage notifications about this bug go to: https://bugs.launchpad.net/compiz/+bug/1288747/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~compiz Post to : [email protected] Unsubscribe : https://launchpad.net/~compiz More help : https://help.launchpad.net/ListHelp

