Comment # 167 on bug 66963 from Nicola

(In reply to comment #166)
> (In reply to comment #165)
> > radeon.audio=0 radeon.aspm=0 radeon.dpm=1
> 
> It didn't work with my Mobility HD3470. Two hangs out 5 reboots.

I forgot to mention that I'm using kernel 3.12.6 (with ck patches). Maybe is
kernel 3.13 that does the magic together with the kernel command line options?