Hi, On Wed, 12 Oct 2022, Ville Syrjala wrote: > On HSW/BDW the hardware ELD buffer does not work if the controller > is suspended. I'm not 100% which thing in there is needed to make it > work (at least just forcing the controller into D0 with setpci is how does the error show up? I'm puzzled how this could have gone unreported for so long. I know many distros have had runtime PM disabled for the HDA controller driver, so that could perhaps explain some of this, but still seems a bit amazing. We started SOF testing with upstream around GLK, so we never covered HSW/BDW, but surely in SOF we always have runtime suspend by default enabled on the audio side. I'll need some more time for review. Will follow up later. Br, Kai
