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

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On Wed, Mar 18, 2020 at 11:05:21AM +0100, Cezary Rojewski wrote:
> On 2020-03-18 10:57, Dominik Brodowski wrote:
> > > > 
> > > > Unfortunately, I cannot bisect this issue easily -- i915 was broken for
> > > > quite some time on this system[*], prohibiting boot...
> > > 
> > > Hmm, sounds like that issue is quite old. DSP for Haswell and Broadwell is
> > > available for I2S devices only, so this relates directly to legacy HDA
> > > driver. Compared to Skylake+, HDAudio controller for older platforms is
> > > found within GPU. My advice is to notify the DRM guys about this issue.
> > > 
> > > Takashi, are you aware of problems with HDMI on HSW/ BDW or should I just
> > > loop Jani and other DRM peps here?
> > 
> > Well, it works on v5.5, so this issue is not really "quite old" (the "no
> > context buffer need to restore!" message seen there seems harmless).
> > 
> > Thanks again, and best wishes,
> > 	Dominik
> > 
> 
> Was commenting the "i915 was broken for quite some time on this system[*],
> prohibiting boot...". Unless I misunderstood you, this ain't a DSP driver
> issue but HDAudio/iDisp one. Essentially, these are two issues you mentioned
> here.

Ah, sorry for the confusion. That issue was introduced post v5.5 as well,
but fixed for v5.6-rc4 -- meaning that it works now, but that bisecting
between v5.5 and v5.6-rc4 is not working as such.

Thanks,
	Dominik



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