[alsa-devel] No sound for several minutes after reboot

[Markus Trippelsdorf]

On 2016.08.29 at 11:32 +0200, Takashi Iwai wrote:
> On Mon, 29 Aug 2016 11:20:47 +0200,
> Markus Trippelsdorf wrote:
> > 
> > On 2016.08.29 at 11:16 +0200, Takashi Iwai wrote:
> > > On Mon, 29 Aug 2016 11:05:48 +0200,
> > > Markus Trippelsdorf wrote:
> > > > 
> > > > On 2016.08.29 at 10:56 +0200, Markus Trippelsdorf wrote:
> > > > > 
> > > > > Unfortunately running: hda-verb /dev/snd/hwC0D0 0x14 SET_POWER 0x00
> > > > > has no effect.
> > > > 
> > > > OK.
> > > > Running: hda-verb /dev/snd/hwC0D0 0x15 SET_DIGI_CONVERT_1 0x01
> > > > fixes the issue.
> > > > I have now put this into my startup script.
> > > 
> > > Oh, then you're using SPDIF output or such?  I missed it from the
> > > description.
> > 
> > Yes, as I wrote in first mail:
> > it is a TOSLINK-S/PDIF link to my DAC.
> 
> Yeah, now I found it.  It's hidden well like Wally, as if it's a part
> of the "aplay -l" output...

Hey, never mind.

> > > This should have been set by IEC958 status bits control.  Does the
> > > problem exist only after a fresh reboot?
> > Yes. And only for a few minutes. After that it gets finally switched on.
> 
> Hm, it's interesting who sets this bit at all.  Could you track it via
> tracing verbs as described in Documentation/sound/alsa/HD-Audio.txt.

I'm not particular motivated now that it is working as expected again.
But if I find time I will do the tracing.

-- 
Markus