Comment # 1 on bug 935527 from Takashi Iwai

Could you try i915-kmp in OBS home:tiwai:bnc935527 repo?
  http://download.opensuse.org/repositories/home:/tiwai:/bnc935527/

You might need to run mkinitrd once after installing this kmp (if not invoked
automatically).  This includes the backports of stable patches relevant with
i915.

If this still doesn't work, it's likely difficult to backport to 3.16 kernel. 
So we'd need to close as UPSTREAM, as the latest drm-intel seems working.