[alsa-devel] 1.0.15: volume levels drift on HDA with STAC92XXcodec

[Maxim Levitsky]

On Monday 05 November 2007 18:39:39 Tellman, Steven wrote:
> > On Monday 05 November 2007 13:40:48 Takashi Iwai wrote:
> > > At Thu, 1 Nov 2007 20:17:30 +0200,
> > > Maxim Levitsky wrote:
> > > >
> > > > On Thursday 01 November 2007 19:47:39 Chuck Ebbert wrote:
> > > > > We have two reports now of unstable volume levels:
> > > > >
> > > > > https://bugzilla.redhat.com/show_bug.cgi?id=361051
> > > > > https://bugzilla.redhat.com/show_bug.cgi?id=354981
> > > > >
> > > > > This is with kernel 2.6.23 plus the two ALSA merge patches from
> > > > > 2.6.23-rc1.
> > > > > _______________________________________________
> > > > > Alsa-devel mailing list
> > > > > Alsa-devel at alsa-project.org
> > > > > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> > > > >
> > > > Probably this isn't a software bug.
> > > > Probably this chip country to datasheet doesn't have usable
> "Master
> > >  > Volume" (volume knob) control.
> > > >
> > > >
> > > > The master volume control wasn't present before, I added support
> for
> > >  > it, using data-sheets.
> > > > I need to know what exactly sigmatel codec was used in both cases.
> > >
> > > Yes, the latter case seems with STAC9205 but the former one (361051)
> > > isn't clear.  Please check /proc/asound/card0/codec#* entries.
> > >
> > >
> > > thanks,
> > >
> > > Takashi
> > >
> > 
> > The former is also STAC9205/04/ since it is the only one with analog
> > loopback and two ADCs
> > 
> > I have question, I talked with the reporter of 354981, and I don't
> know
> > why but his amixer
> > gives very strange results:
> > 
> > [root at itse68482 ~]# cat amixer-contents-kernel-2.6.23.2-36
> > numid=0,iface=MIXER,name='Master Playback Switch'
> >   ; type=BOOLEAN,access=rw------,values=1
> >   : values=on
> > numid=0,iface=MIXER,name='Master Playback Volume'
> >   ; type=INTEGER,access=rw------,values=2,min=0,max=65536,step=1
> >   : values=65536,65536
> > numid=0,iface=MIXER,name='Capture Switch'
> >   ; type=BOOLEAN,access=rw------,values=1
> >   : values=on
> > numid=0,iface=MIXER,name='Capture Volume'
> >   ; type=INTEGER,access=rw------,values=2,min=0,max=65536,step=1
> >   : values=34953,34953
> > 
> > How can that be?
> > 
> > According to his  lspci, he doesn't have a second sound card.
> > 
> > Any ideas?
> > 
> > Besides that it seems that VolumeKnob is physically broken on
> STAC9205s,
> > Can anybody here with STAC9205/STAC9204/STAC9254/STAC9255 test it?
> > 
> > And last question, about STAC9254/STAC9255
> > There is no datasheet for that chip on the web, is this just STAC9205
> +
> > modem?
> > 
> > Best regards,
> > 	Maxim Levitsky
> > _______________________________________________
> > Alsa-devel mailing list
> > Alsa-devel at alsa-project.org
> > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> 
> [Tellman, Steven] 
> 
> The STAC9254/55 lines are not available anymore. Yes, they were
> basically 9204/5 + Modem.
> 
> - Steven
> 
> 
Hi,

Thanks a lot,

Just one more question,
are data-sheets for STAC9872 aviable?
I don't even see a page describing those chips on IDT website.
Furthermore, recently IDT sent a patch for STAC92HD71BXX, 
thus I want to ask whenever datasheets for it will be available.

Best regards,
	Maxim Levitsky