[alsa-devel] no front speaker sound with ALC262

Tobin Davis tdavis at dsl-only.net
Fri Mar 21 21:14:01 CET 2008

Everything is set in motion for me to get an eval unit.  I should see it
in about a week.  As soon as it comes in, I'll hit the ground running,
and see what I can figure out.


On Tue, 2008-03-18 at 14:24 +0100, Takashi Iwai wrote:

> At Tue, 18 Mar 2008 09:11:47 -0400,
> Matthew R Hurne wrote:
> > 
> > Tobin Davis wrote:
> > > Ok, it looks like it may be a couple of weeks out, but they are more
> > > than happy to get me a unit.  Their sales staff has been bugging for
> > > Linux support for 6 months apparently.
> > > 
> > > In the mean time, if you can get me that output, I can at least start
> > > making a dent on this.  From the photo, it looks like you have a speaker
> > > jack (green) , line-in (blue), and mic (pink), plus speakers and mic
> > > built in?  I'll review the online documents again to be sure.
> > > 
> > > Tobin
> > 
> > We put some pressure on Tangent to get Linux audio working, and the tech. support guys I spoke with were clearly clueless.  :-(
> > 
> > I have attached the relevant output from dmesg, and a new alsa-info.sh output.
> In your case, the driver cannot work as is because the hardware tells
> that you have no speaker output.  It's a bug of BIOS.
> As mentioned in the earlier mail, then you'll have to figure out which
> pin corresponds to the speaker output actually manually by trial and
> error.  This requires some least knowledge of HD-audio codec.  See
> HD-audio documentation available on intel or other web sites.
> Regarding the words you listed: the HD-audio codec contains small
> components (called widgets) that are connected with each other.  Each
> widget has a unique number id (NID) and has a different role, such as
> DAC/ADC, mixer, selector, pin (the actual I/O), etc.  Each widget can
> get/set certain commands, called verbs.  You can see the widgets on
> your codec in the codec#* proc file output in alsa-info.sh output.
> Takashi

Tobin Davis 

BOFH excuse #64:

CPU needs recalibration

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