I'm building a test kernel with the enhancement of pm_blacklist option for snd-hda-intel in OBS home:tiwai:bsc1226449 repo. Once after the build finishes, it'll appear at http://download.opensuse.org/repositories/home:/tiwai:/bsc1226449/standard/ Please install the kernel from there later, and boot with snd_hda_intel.pm_blacklist=2 boot parameter. This should keep the runtime PM disabled no matter which power_save option is set.