[alsa-devel] Mic not working on Dell Vostro 1700 by default

[Takashi Iwai]

At Wed, 23 Dec 2009 14:51:25 +0100,
Anisse Astier wrote:
> 
> On Wed, 23 Dec 2009 08:31:40 +0100, Takashi Iwai <tiwai at suse.de> wrote :
> 
> > At Tue, 22 Dec 2009 18:50:28 +0100,
> > Anisse Astier wrote:
> > > 
> > > On Tue, 22 Dec 2009 18:44:04 +0100, Anisse Astier <anisse at astier.eu> wrote :
> > > 
> > > > Hi,
> > > > 
> > > > (i'm not subscribed to the list, please cc me in replies)
> > > > 
> > > > So I'm on a Dell Vostro 1700 with latest BIOS (A07). In the default
> > > > configuration, the mic is not working.
> > > > 
> > > > But if I append model=dell-m42 when loading snd-hda-intel, it works.
> > > > 
> > > > My alsa-info:
> > > >  http://www.alsa-project.org/db/?f=8d6f7d613b909c0eef67f93e0e86bf13476e9e54
> > > > 
> > > > alsa-info with option model=dell-m42
> > > >  http://www.alsa-project.org/db/?f=233cee7ffea01b9f46451e64c95c4fc482ab4ee4
> > > > 
> > > > I don't know if dell-m42 is enough, I chose it because it was used for the
> > > > Dell Vostro 1500, for which there was a pci quirk in patch_sigmatel.c,
> > > > and that seemed close enough. Everything seems to work properly though.
> > > > 
> > > > I don't know if it's possible to add the same pci-quirk (or a similar one)
> > > > in patch_sigmatel.c , or any dmi-based quirk, but I'd like to help in
> > > > doing so.
> > > > 
> > > > I compiled a working hda-verb should some remote debugging be needed.
> > > > 
> > > 
> > > I forgot to add that this is also working with dell-m44. A pointer:
> > > https://wiki.ubuntu.com/InstallingUbuntuOnADellVostro1700#AUDIO :
> > > suggestion to add this option by default on ubuntu.
> > 
> > So, which is better, m42 or m44?
> > This can be checked only with a real hardware...
> >
> 
> I did some tests today, and I'm unable to tell. Both behave the same with
> external headphones, internal speakers, external mic, internal mic. Jack
> detection works flawlessly with both. From time to time the codec will
> timeout and driver switch to polling mode, but it's independent from the
> option model.
> I really don't know what else to test.

Maybe the different is either the digital I/O or the docking station.

> But IMO, we should go with m42. According to patch_sigmatel.c dell-m42 is
> made for Vostro 1500, and this should be tho closest to the 1700. It
> seems they have the same motherboard. I attached a diff between the two
> laptops' lspci. Only the graphics card changes.

OK, then let's take dell-m42.


thanks,

Takashi