I have the same problem, also on Jaunty, with a brand-new System76
Leopard Extreme. Graphics card is an NVIDIA GTX 275, and audio is an
"HDA Intel - ALC889". HDMI sound periodically cuts out for half a second
to a second. It doesn't happen all that often though, maybe every 5
minutes or so on average. It's not specific to PulseAudio though. I have
reproed it with pure ALSA and also OSS! So it's either a low-level bug
that's common to both ALSA and OSS, or it's a hardware bug. :( Or
possibly a bug in the TV (mine is a SONY XBR4).
I'm opening this against the kernel since it occurs with both ALSA and
OSS.
Note that I would use analog audio if I could, but I can't. The latest
NVIDIA cards don't support turning off HDMI audio transmission, and my
TV doesn't support selecting analog audio if an HDMI audio signal is
present. Apparently lots are that way.
(P.S. I of course had to make the same changes to /etc/pulse/default.pa
as The Fiddler in order to make PA recognize the Digital device.)
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
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HDMI audio cuts out intermittently while normal audio plays fine
https://bugs.launchpad.net/bugs/397269
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