Two device drivers for only one sound card

[Chris Dawson]

OSS is the old sound interface, and ALSA is the new.  OSS interfaces
are usually provided because lots of software still require OSS
interfaces.  If your software supports ALSA, you are better off.  It
might be that your sound card drivers support both interfaces, and so
you are seeing different interfaces to the same sound card, although
it looks like there are two different cards, to be honest.

I would recommend opening a terminal window and running "alsamixer -V
capture" (or if this doesn't work, just alsamixer).  Use the
left-/right arrow keys to move to the proper item and then select for
capture using space bar, m for mute/unmute, and up/down to adjust
levels.  You will need to make sure the global capture item is
selected, and the other input (or mixer) is also set to capture.

Then, open audacity and see if you see levels bounce when you press record.

Hope that helps.

Chris

On 5/10/06, Dave M G <martin at autotelic.com> wrote:
> Ubuntu Users,
>
> I'm using Dapper.
>
> I have an Asus motherboard which has a sound card built into it. The
> sound card is a Realtek ALC882.
>
> It outputs sound, but does not recognize any input on the microphone. My
> goal is to get microphone input so I can record my voice and use VOIP
> services and whatnot.
>
> I have used Alsamixer and the Gnome Volume Control to un-mute and
> increase the recording volume. But in Audacity, for example, I see no
> response whatsoever when using the mike.
>
> I have verified that the microphone works by testing with other hardware.
>
> Figuring out what the problem is has been as difficult as trying to
> solve it. Although I only have one sound device, Gnome Volume Control
> lets me select from two:
>
> HDA Intel (Alsa mixer)
> Realtek ALC882 (OSS mixer)
>
> I don't know which I should work with, and why there are two anyway.
>
> What I'd like to do is:
>
> 1. Simplify the drivers so there is one device listed and one set of
> controls to manage the one sound device I have.
>
> 2. Get control of the microphone.
>
> If anyone can help me with this situation, I would be very appreciative.
>
> Thank you.
>
> --
> Dave M G
>
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