RE: [gentoo-user] Sound jack isolations

["Marzan, Richard non Unisys" <Richard.Marzan@unisys.com>]

> -----Original Message-----
> From: Alan McKinnon [mailto:alan.mckinnon@gmail.com]
> Sent: Tuesday, January 29, 2008 4:58 PM
> To: gentoo-user@lists.gentoo.org
> Subject: Re: [gentoo-user] Sound jack isolations
> 
> On Tuesday 29 January 2008, Marzan, Richard non Unisys wrote:
> > I tried googling around but no helpful content so far. I have a
> > laptop with built-in sound. It uses the HDA_intel kernel module. My
> > problem is that I can't silence the onboard/built-in speakers when I
> > plug in the headphones to the machine. Muting sound would lead to
all
> > jacks and audio ports to be silenced -- not just the built-in
> > speakers, which I intend to mute solely leaving sound alive on the
> > headphone jacks. There are no channels readily observable to
> > differentiate where sound goes and to which port with alsa-mixer.
The
> > behavior I would like to achieve is one that will allow me to mute
> > onboard speakers while continuing to have the headphones receive
> > audio signals. Has anyone ever done this? Any pointers to
> > documentation will be appreciated.
> 
> Is it a Dell with an ICH8 chipset? This is a well known bug and is
fixed
> in alsa-1.0.15. I have this same problem on my Dell D830 which runs
> Gentoo and Ubuntu.
> 
> On Ubuntu I use a backported kernel and
> 'options snd-hda-intel model=dell-m42' in /etc/modprobe.d/alsa-base
> --
> Alan McKinnon
> alan dot mckinnon at gmail dot com
> --
> gentoo-user@lists.gentoo.org mailing list

I'm now using alsa-driver with my system. I checked the ALSA-Project
page and it seems since 1.0.14rcX they have pretty much halted
development on the Connexant CX20549 Codec which uses Realtek 282...
There is a patch from linuxant.com but it's takes a lot more steps to
configure. I'm pretty sure I'll solve the issue by editing my own
configuration using theirs as a reference point. I'm probably going to
have to downgrade my version of alsa-driver or use the svn sources.

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