Arch Linux

josh000

Member

Registered: 2010-04-05

Posts: 37

Software audio mixing, realtek ALC662, ALSA

Hi. I am using kernel 2.6.33.2

My audio card is a HDA Intel, and the chipset is Realtek ALC662.

I don't seem to have proper audio mixing support with ALSA?

I am not sure what it should be, however I thought that full mixing would be implemented by now?

As an example, if I start one instance of mplayer playing a movie, and then try to start a different instace playing a different movie, the second instance will be mute.

If I pause the first instance when starting the second instance then it will have sounce, but I can not play both at the same time. Trying to do so makes one of them crash.

Under windows I have perfect mixing without having to do anything, so I guess my card is capable of it.

Is their something I have to enable or compile a certain way, or can ALSA just not do this yet?

brebs

Member

Registered: 2007-04-03

Posts: 3,742

Re: Software audio mixing, realtek ALC662, ALSA

Use ALSA. See my similar rant regarding MPD.

I'm just about to file a bug on the mplayer bugzilla now...

In ~/.mplayer/config

ao=alsa

That's for the mplayer non-GUI version. For the GUI version, use the GUI interface to change the sound output.

Edit: Bug submitted.

Last edited by brebs (2010-04-19 13:50:01)

josh000

Member

Registered: 2010-04-05

Posts: 37

Re: Software audio mixing, realtek ALC662, ALSA

Hmm, this works, but then I can't use / to decrease the volume. It just says something about the left channel change not permitted. Is this an ALSA bug or an mplayer bug?

Thanks for the help btw.