[alsa-devel] [PATCH 0/4] More aggressive PM for HD-audio

[Takashi Iwai]

At Thu, 09 Apr 2015 08:59:17 +0200,
David Henningsson wrote:
> 
> 
> 
> On 2015-04-09 08:56, Takashi Iwai wrote:
> > Ah, OK.  Then we should revert the commit later.
> >
> > But let's continue debugging a bit.  Could you give alsa-info.sh
> > outputs on both working and non-working states?
> 
> Just running hda-emu with a realtek codec, e g 
> codecs/canonical/alc292-dell-latitude-e5440-ccert-201307-13941 turns all 
> nodes, including the internal speaker, into D3. And running a playback 
> test does not switch things into D0 - even the DAC node remains in D3 
> even though you try to stream to it, which seems a bit strange.
> 
> Could you explain how this is supposed to work?

Doh, it was the missing stream_pm ops setup.  Also I found a few
other minor issues.  I'm going to submit a fix patch series now.


thanks

Takashi