[gentoo-user] Sound jack isolations

[gentoo-user] Sound jack isolations

[Marzan, Richard non Unisys]

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. 
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Re: [gentoo-user] Sound jack isolations

[Dan Dexter]

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On Tuesday 29 January 2008 12:58:19 pm 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.

I had an issue very similiar to this when I purchased my Acer Extensa 5620. 
After looking around for a long time I found out that the version of alsa 
that was being used in my kernel at the time didn't well support my sound 
card. I'm not sure about what alsa version is being used in the latest kernel 
now but it doesn't hurt to give it a go. Also, I had to modprobe 
snd_hda_intel with model=acer. Before inserting the module with the model 
param I was at the same exact spot you are at now. hope this helps

--
Dan Dexter

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Re: [gentoo-user] Sound jack isolations

[Florian Philipp]

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On Tue, 2008-01-29 at 12:58 -0600, 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. 

Does it work with Windows? I'd expect such things to be implemented in
hardware.

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RE: [gentoo-user] Sound jack isolations

[Marzan, Richard non Unisys]

> -----Original Message-----
> From: Florian Philipp [mailto:lists@f_philipp.fastmail.net]
> Sent: Tuesday, January 29, 2008 2:20 PM
> To: gentoo-user@lists.gentoo.org
> Subject: Re: [gentoo-user] Sound jack isolations
> 
> 
> On Tue, 2008-01-29 at 12:58 -0600, 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.
> 
> Does it work with Windows? I'd expect such things to be implemented i
> hardware.


Yeah, it worked with Vista, when I first bought and booted it, before I
nuked it off my system. It should be implemented in the hardware but to
save a few gates it is not done. They leave it up to software engineers,
which is alright when you publicly provide the documentation on how to
do it. 
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Re: [gentoo-user] Sound jack isolations

[Alan McKinnon]

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
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RE: [gentoo-user] Sound jack isolations

[Marzan, Richard non Unisys]

> -----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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Re: [gentoo-user] Sound jack isolations

[Richard Marzan]

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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Re: [gentoo-user] Sound jack isolations

[Richard Marzan]

On Tue, 2008-01-29 at 21:11 -0500, Richard Marzan wrote:
> 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


There was someone who asked for me to keep him or her updated with this
effort and this is why I'm posting back to the post with this info.

Well, a few months later and sound jack sound isolation issue is
corrected. Upgrade to ALSA-DRIVER 1.0.16 and you should be fine. You
might have to unmask it. Sound now ceases to emanate from my speakers
when headphones are plugged into my laptop (HP dv6645us). All thanks to
Tobin Davis and the alsa-project and a surprise from emerge --sync &&
emerge -uDNtv world

Here is my output from the alsa-info shell script, I hope this helps
someone out: 
http://pastebin.ca/988978


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