Comment 40 for bug 1293384

Same here, on a desktop with 14.04 64 bit with default DE (Unity), using a gtx 260 with the recommended proprietary and tested driver, with all updates, using 2 external monitors.

I've tried turning off features/special effects in compiz to see if there was any change but the problem still persisted. It helped a bit but compiz was still eating abnormal amounts of cpu.

I've found 3 solutions thus far that solved problem but I'm not sure if it'll work for anyone else:

1. Switching to the open source driver (in my case, the nouveau driver because I'm using an nvidia card)
2. Switching the DE to something that isn't unity
3. Disabling my 2nd monitor

Obviously, the first option was ideal as everything just worked and I didn't have to sacrifice a monitor or switch DE's.