[alsa-devel] [ALSA] hda-codec - Fix laptop models for Cxt5045

[Takashi Iwai]

At Tue, 01 Jul 2008 08:26:47 -0400,
Mark T.B. Carroll wrote:
> 
> Takashi Iwai <tiwai at suse.de> writes:
> 
> > At Tue, 1 Jul 2008 09:07:30 +0200 (CEST),
> > Jaroslav Kysela wrote:
> >> 
> >> On Mon, 30 Jun 2008, Mark T.B. Carroll wrote:
> >> 
> >> > Greetings. I thought I should mention that your patch
> >> > http://kerneltrap.org/mailarchive/git-commits-head/2008/2/1/670694
> >> > broke headphone sound for me on a Toshiba Satellite P105-S6197,
> >> > sound card PCI ID 8086:27d8 with Conexant CX20549 codec. The speakers
> >> > silence when I plug the headphones in but no sound comes from them.
> >
> > Do you mean that the no sound comes from the headphone even if you
> > plug it?  And, the speaker works again after unplugging the HP?
> 
> Yes.
> 
> >> > Details are at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=488063
> >> > but half of my Debian bug reports go ignored for years.
> >> > 
> >> > A sufficient workaround for me is to comment out the `default:' in the
> >> > `switch (board_config)' in the function `patch_cxt5045' in
> >> > sound/pci/hda/patch_conexant.c. Then everything works fine again.
> >
> > Does the speaker auto-muting work if you do that?
> 
> Yes.
> 
> In both cases, the speakers work fine: they mute if I plug the
> headphones in, and unmute when I unplug them.

OK, it means that your hardware does hardware-muting, thus the driver
doesn't have to mute by itself.

> The difference is that if I leave the `default:' in the code, no sound
> comes from the headphones when they are plugged in.
> 
> > Please run alsa-info.sh (with --no-upload option) for both working
> > (patched) and non-working (the original) cases, and attach generated 
> > files to compare.  This will be helpful to analyze the problem.
> 
> Okay.

Thanks.


Takashi