nforce hardware mixing ...

jonprime · n00b Joined: 10 Oct 2004 Posts: 7

I've been under the impression that hw mixing support in the new nforce driver would allow me to send multiple "audio streams" to my sound card without using arts, however when I do

mplayer /test.mp3

then switch to another konsole and do

mplayer /test.mp3

resulting in

audio_setup: Can't open audio device /dev/dsp: Cannot allocate memory

anything I can do?

z3ro · Apprentice Joined: 16 Jun 2004 Posts: 261

You can try using dmix. I think there's a how-to on gentoo-wiki.

Admiral LSD · Posted: Sat Oct 30, 2004 5:44 pm Post subject:

That won't work as dmix is an ALSA thing and the new nVidia drivers are OSS.

The do in fact support hardware mixing but the catch is you need a motherboard with the MCP-T South Bridge (such as my Albatron KX18D Pro II and the EPoX 8RDA+ I had before it). If your board only has the MCP south bridge then you're out of luck.
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chunderbunny · Posted: Sat Oct 30, 2004 6:06 pm Post subject:

In order to get the hardware mixing working you need to completely disable ALSA in your kernel, and make sure it doesn't start at boot. Make sure OSS is enabled in your kernel, but no sound drivers are selected. Now you install the nforce-sound module and you should have sound for most apps.

For mplayer you need to make sure that the sound output is directed through either the oss driver or the sdl driver, eg

Admiral LSD · Posted: Sat Oct 30, 2004 6:33 pm Post subject:

Unless you have a board with the MCP-T south bridge and therefore the onboard "SoundStorm" audio processor there's nothing you can do that'll enable hardware mixing as the hardware isn't there to begin with. What I suspect is the case here is that jonprime has an MCP board and therefore he's out of luck when it comes to hardware mixing.
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jonprime · n00b Joined: 10 Oct 2004 Posts: 7

thanks for info. Is there anyway other than hardware mixing, or buying new hardware that I can get teamspeak working with cedega?

Admiral LSD · Posted: Mon Nov 01, 2004 7:02 am Post subject:

You might be able to get away with setting up dmix in ALSA as Z3RO 0 suggested but failing that, buying new hardware may be the only option.
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...watashi ga iru koto o.
Itsudatte soba ni iru yo.

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iancognito85 · Posted: Sat Jan 08, 2005 8:28 am Post subject:

Hi there

I have an Epox 8RDA, and that has MCP-T built into it. I've just migrated to OSS as alsa was driving me insane, and i am having the same problem: mixing isn't working. Any suggestions/ideas? I've been searching forums/google quite a bit, and can't find any resources.

Cheers

offie