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

[David Henningsson]

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?

-- 
David Henningsson, Canonical Ltd.
https://launchpad.net/~diwic