[alsa-devel] latest Mac Pro (quad core) audio issues

stan ghjeold_i_mwee at cox.net
Fri Aug 15 18:54:12 CEST 2008

S. Aguinaga wrote:
> Hello,
> I just installed fedora (9) on one of the latest Mac Pro, all is well except for the audio.  I have no audio out of the main Tower speaker or via the headphones.  Eventually I want to drive audio out of the optical ports.  Any links to howto's or work-around would greatly appreciated.
> // Salvador
Fedora uses pulseaudio by default.  How are you determining that there 
is no output?  i.e. what program are you using, and how

Try aplay -vv some.wav
Try aplay -vv -Dhw:0,0 some.wav
Try aplay -vv -Dplughw:0,0 some.wav

Are there error messages or does it look like it is playing without 
sound?  Are there messages in /var/log/messages regarding sound at 
boot or while trying to play.

I don't use pulseaudio and don't know it very well, but there is more 
information here.  http://www.pulseaudio.org

Could you run a script which provides more information about your 
sound setup and post the link back here?

The script is found at http://www.alsa-project.org/alsa-info.sh

You can run the script so the results occur locally, by specifying the 
   ---no-upload   option.

alsa-info.sh --no-upload

You would then paste the output into your email instead of providing a 

This information will enable me to determine if your setup is OK, and 
look for other problems.

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