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Re: ALSA on LG LW20 laptop



> Does anyone managed to make ALSA work well on a LG LW20 laptop?
> I can ear sound, but can't ear headphones without having sound from front 
> speakers simultaneously. Muting speakers also mutes headphones.

I have a working ALSA setup on my Debian LG LW20 box.

You need an ALSA version later than 1.0.13rc2 to do this:
http://www.alsa-project.org/changes/v1-0-13rc1--v1-0-13rc2.txt

As specified in the changelog, you need to pass the model=lg-lw
parameter to the module when loading it. 

To get this working, I've added the following lines in the BOTTOM of
this files:

/etc/modprobe.d/aliases:
alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
alias sound-slot-0 snd-card-0
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

/etc/modprobe.d/options:
options snd-hda-intel model=z71v position_fix=1

/etc/modules:
snd-hda-intel
snd-ALC880

When this is done, the kernel maps your incoming and outgoing sound
ports correctly. This means that your will need to move your headphone
jack to the slot labeled with a headphone symbol and restart your
computer. Afther that, you may need to unmute the new Headphone slider
in the volume control before you will be able to hear anything.


-- 
Widar Nord
Cheif Technical Officer
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