On Fri, 4 Feb 2011 18:05:44 -0500
"S. Massy" <lists(a)smassy.andropov.org> wrote:
  Hello,
 I am attempting to switch to an RT kernel, but so far, I get no audio
 when booting one. I've tried a prebuild image from 64studio's
 squeeze-backports repository (2.6.33.7rt29) and also patched and built
 my own (2.6.33.7rt30), but the outcome is the same. The proper modules
 are loaded, the card shows up properly, all levels are fine in
 alsamixer. Jack loads without a complaint, mplayer plays a file without
 complaint, but there is no sound. Any one ever came up against that?
 Thanks,
 S.M. 
At the risk of stating the obvious, have you checked that the sound is not
muted? Load up alsamixer if you're not sure.
--
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.