Comment # 3 on bug 1192116 from Jason Straight

(In reply to Takashi Iwai from comment #2)
> Hrm, it's very hard to judge only from the description...  Does the problem
> appear without graphics?
> 
> Basically the best option for hunting the culprit would be the git
> bisection.  If you don't mind to compile the kernel by yourself, it'd be
> appreciated to perform git bisection.
> 
> The kernel build itself won't be too difficult in this case.  It'll need the
> significant disk space and certain compile time, though.

Booted with latest nvidia drivers that updated today and the problem appears to
be gone, so it was likely just the last nvidia driver with that kernel version.