https://bugs.freedesktop.org/show_bug.cgi?id=36769

--- Comment #7 from Chris Rankin rankincj@googlemail.com 2012-04-06 03:55:36 PDT --- (In reply to comment #6)

Possibly a duplicate of bug 46796.

Or vice versa?

Can you try the patch there or a 3.4 kernel snapshot?

I believe that this patch has now been added to both 3.2 and 3.3 stable trees too. And no, the problem hasn't reoccurred yet - but it's still early days. I never had a reliable method of triggering it in the first place, so I can only *really* be sure if it *isn't* fixed...