No Mic Support On My Acer Aspire Revo

I installed ubuntu on my acer aspire revo, but it doesn't have microphone support. Do I need to install additional drivers? Something else? Here are screenshots of the current sound settings:
screenshotsoundpreferenq.png
screenshotsoundpreferen.png
LVL 7
Jonah11Asked:
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TekSupDDGCommented:
What version of Ubuntu? There are several Acer computers that go under the name Acer One. Which one do you have? I suspect that you will have to change something in the configuration file for the audio.
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Jonah11Author Commented:
Model number is R1600.

I'm using the latest version of ubuntu.
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TobiasHolmCommented:
Looks like it can be a bug:
https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/526121
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/378806

Someone said this:
> After removing pulse audio the microphone works in Skype

You could try removing Pulse Audio. Ref: https://wiki.ubuntu.com/PulseAudio

PulseAudio Removal:
If you decide you no longer like PulseAudio and would like to disable it: Remove the added lines to /etc/asound.conf If /etc/asound.conf did not exist when you installed PulseAudio, you may remove /etc/asound.conf entirely.

After this, you may remove all of the installed PulseAudio packages.

$ sudo apt-get remove pulseaudio

Regards, Tobias
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Jonah11Author Commented:
I don't think I have PulseAudio installed, as there is no "asound.conf" file, only an "esound.conf".  

Any other suggestions?
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TobiasHolmCommented:
Are you using squeeze or alsa as your sound manager?
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Fabio MarzoccaFreelancerCommented:
You should be able to seòlect the device "Analog Stereo Duplex" in your Sound Preferences->Hardware tab.


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Davis McCarnOwnerCommented:
There are two BIOS upgrades specially labeled for linux and/or FreeDos (you'll have to click on the Drivers and Downloads, Desktops, Aspire, then R1600 to get there): http://support.acer.com/drivers_download.aspx
The systemboard has a Realtek HD Audio chip and that still seems problematical; but, here is a link which has drivers: http://ubuntuforums.org/showthread.php?t=557031
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Jonah11Author Commented:
Tobias,

How do I determine what sound manager I am using?
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TobiasHolmCommented:
In Ubuntu Software Center you can see installed programs. Search for 'alsa' and you can see if it's installed. Alsa is the default sound manager in Ubuntu.

Try this to reinstall the sound:  


$ sudo apt-get remove --purge alsa-base
$ sudo apt-get remove --purge pulseaudio
$ sudo get clean && sudo apt-get autoremove
$ sudo apt-get install alsa-base
$ sudo apt-get install pulseaudio

Open in new window

1alsa.gif
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TobiasHolmCommented:
ops! The code above should be:
$ sudo apt-get remove --purge alsa-base
$ sudo apt-get remove --purge pulseaudio
$ sudo apt-get clean && sudo apt-get autoremove
$ sudo apt-get install alsa-base
$ sudo apt-get install pulseaudio

Open in new window

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Fabio MarzoccaFreelancerCommented:
There is a Bug on Acer microphone in ubuntu 10.04.
Please read here a workaraound:
https://bugs.edge.launchpad.net/ubuntu/+source/alsa-driver/+bug/459982/comments/17
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Jonah11Author Commented:
sorry guys, i have been very busy and forgot about this question.  i will award points for helping.
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