Comment # 15 on bug 1209436 from Takashi Iwai

Could you check the kernel in OBS home:tiwai:bsc1209436 repo?
  http://download.opensuse.org/repositories/home:/tiwai:/bsc1209436/pool/

It seems that a backport of i915 upstream fix caused the problem.  The kernel
above reverted it on top of the latest SLE15-SP4 git branch.