plugging in headphones doesn't turn off all speakers on Acer Aspire 8942G

Hmm, I remember a bug like this a while ago. If you have the time and experience, can you have a look at bug 611803 and bug 656625 and see if the instructions there on how to find the subwoofer pin can help you as well?

If I go to Node[0x15] PIN and Mute Val[0] and Val[1] at "Output Amplifier" in hda_analyzer the speakers which normally remain playing sound mute and all I hear is the sound coming from my headphones.

Thanks, that's what I needed to know. I've made a patch and sent it to upstream.

Thank you so much. When will I be able to get that patch?

The patch is here: http://mailman.alsa-project.org/pipermail/alsa-devel/2011-February/036840.html
If you don't want to compile it in yourself, either wait until Takashi's applied it (might take a few days, haven't seen him around this week) + wait one day + https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules
Or in a few weeks, it should be in Natty.

Takashi just applied it so 24 hours from now it should be in https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules .

Still not there. What happened?

Hmm. Wait another day, if it's still not in, please file an alsa-info (wiki.ubuntu.com/Alsa/AlsaInfo) so we can determine what went wrong. Thanks!

And just because of Murphy's law or something, the build of linux-alsa-driver-modules failed this morning so no test today either... :-(

Damn so will there a build tomorrow or will I have to wait until monday?

I just compiled the latest tarball from Takashi using following commands:

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
cd ~
mkdir src
cd src
mkdir alsa
cd alsa
wget ftp://ftp.kernel.org/pub/linux/kernel/people/tiwai/snapshot/alsa-driver-snapshot.tar.gz
tar -xvpf alsa-driver-snapshot.tar.gz
cd alsa-driver
sudo ./configure
sudo make
sudo make install-modules

sudo reboot
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

But the problem did not disappear. Did I something wrong while compilation, or do I have to do something else to make my system use the new driver?

I just tried your codec in an emulator, where it seems to work fine. If you run this command in a terminal: "modinfo snd-hda-codec-realtek"
Look at the filename on the first line - it should correspond to the path/file with Takashi's snapshot in. If you can't get it to work, let me know and I'll try making a dkms package for you to test.

filename: /lib/modules/2.6.35-26-generic/updates/alsa/snd-hda-codec-realtek.ko

It compiles fine I guess and no errors show up on installation, but the problem just is it does not load the new modules, but the old ones which are in this folder:

/lib/modules/2.6.35-26-generic/updates/alsa/

There appear new modules in the folder "modules" in the source directory of the extracted tarball.
How can I make the system load the new drivers? When I execute "sudo make install-modules" the new compiled modules should go straight to the direcory mentioned above where the old ones are and the system should load them, but why is that not the case?

I tried everything, but I just can't get it to work.
I really would appreciate your help.

Ok, I have now made a dkms package for you.

However first make sure you have no overrides installed. i e, "modinfo snd-hda-codec-realtek" should say:

/lib/modules/2.6.35-26-generic/kernel/sound/pci/hda/snd-hda-codec-realtek.ko

...as long as it says something else, you have something installed that overrides this which you must remove/uninstall. Exactly how to do that depends on what you installed and how.

After making sure of that, try:
http://people.canonical.com/~diwic/temp/alsa-hda-diwic-dkms_1.0.23.diwic_all.deb
Download, install, reboot and test.

After installation of the dkms package (and reboot), here's what it should say:

/lib/modules/2.6.35-26-generic/updates/dkms/snd-hda-codec-realtek.ko

Thank you very much. It works perfectly now. The support is awesome here.