[AG-TECH] Rat errors on FC3

Andrew Replogle andrew.replogle at gmail.com
Mon Dec 6 08:41:45 CST 2004

I know that there are some issues with some of the intel8x0 chipsets
w/ AC97 audio controller. Particularly when the intel8x0 driver tries
to use ALSA's oss  emu.

I'd check a few other things first though.

1.) are you able to get sound at all? cat /dev/urandom > /dev/[dsp/audio]
2.) for FC3 is there some "audio" group your user needs to be a part
of? If not what do the permissions for the sound device look like?
3.) is this soundcard built-in to the motherboard? / which board?

If it is an issue with the OSS emu in ALSA and the intel8x0 driver I'd
recommend not using the OSS if you can avoid it and just use ALSA's
native support (though I'm not sure if rat needs oss?  anyone?)

I ended up switching to a cheap $10 Soundblaster card and everything
works great with the emu10k1 drivers..


On Fri, 3 Dec 2004 09:46:54 -0500 (EST), Aaron Lafferty
<lafferty at oar.net> wrote:
> Hi All,
> I've just upgraded the machines on our access grid, and have FC3 installed
> on them and AG2.3.  When the venue client tries to speak to the service
> manager on the audio capture box, I receive these errors;
> Couldn't set mixer playback volume: Invalid argument
> rat-4.2.22-media: simple.c:1832: snd_mixer_selem_set_capture_volume_all:
> Assertion `elem' failed.
> RAT v4.2.22: Could not send mbus message (24:1)
> The rat gui does not appear...
> I also received these errors on FC1 with handbuilt alsa and handbuilt
> snd_intel8x0 drivers.
> The soundcard in the box is of the intel chipset variety using the
> intel8x0 drivers using the "out of the box" FC3 install.
> Is this soundcard just not supported by rat?  Or am I missing something
> that has to be done in order for this to operate properly?
> Thanks
> Aaron

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