Re: [gentoo-user] Sound jack isolations

[Richard Marzan <richardmarzan@optonline.net>]

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


It's an HP dv6645us. I have ALSA modules built-in to the kernel. How can I set the model option with this type of ALSA configuration.
If i choose to use the alsa-drivers ebuild do i include alsa in the kernel as a module or do i have to include it at all?

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