Comment # 1 on bug 908747 from Takashi Iwai

Could you install openSUSE 13.1 kernel on the 13.2 system and boot with it. 
Does the problem disappears?  If yes, it's a kernel regression.

In that case, try to boot both kernels with drm.debug=0x0e boot option, take
the dmesg outputs on both, and attach to Bugzilla, together with
/var/log/Xorg.0.log files.