Ubuntu
alsa-driver package

  1. Bug #864735
  2. Comment #7

Comment 7 for bug 864735

Revision history for this message
Serge Matveenko (lig) wrote : Re: [GT5676, ATI RS690/780 HDMI, Digital Out, HDMI] No sound at all

Just found workaround here: http://phoronix.com/forums/showthread.php?62635-No-HDMI-sound-after-upgrade-to-Kubuntu-11.10-with-my-hd4770

Adding "radeon.audio=1" into kernel boot params solved the problem.