Comment 3 for bug 665796

Redirected here from ServerFault and bug 658649 (thanks JRavasi).

Same CPU/video card, although for me the timing is closer to 1-2 minutes of lockup. Unlike the original report, though, this seems to happen without _any_ apparent cause - even if the system is completely idle, there will be occasional bouts. Swapping to full terminal via Ctrl+Alt+Fx will take some 10-15 seconds, but once in terminal, responsiveness is okay. top/htop updates at this point mimic stuttering seen in the GUI.

Again, started happening after a fresh install of 10.10. Various other issues raised in relation include nVidia drivers and desktop effects, neither of which have solved it.