snd_hda_intel/sst-acpi sound breakage on suspend/resume since 5.6-rc1

[Dominik Brodowski]

On Wed, Mar 18, 2020 at 10:13:54AM -0500, Pierre-Louis Bossart wrote:
> 
> 
> > > > While 5.5.x works fine, mainline as of ac309e7744be (v5.6-rc6+) causes me
> > > > some sound-related trouble: after boot, the sound works fine -- but once I
> > > > suspend and resume my broadwell-based XPS13, I need to switch to headphone
> > > > and back to speaker to hear something. But what I hear isn't music but
> > > > garbled output.
> 
> It's my understanding that the use of the haswell driver is opt-in for Dell
> XPS13 9343. When we run the SOF driver on this device, we have to explicitly
> bypass an ACPI quirk that forces HDAudio to be used:
> 
> https://github.com/thesofproject/linux/commit/944b6a2d620a556424ed4195c8428485fcb6c2bd
> 
> Have you tried to run in plain vanilla HDAudio mode?

I had (see 18d78b64fddc), but not any more in years (and I'd like to keep
using I2S, which has worked flawlessly in these years).

Thanks,
	Dominik