At Fri, 21 Mar 2008 20:03:32 +0100,
Andre Tomt wrote:
[Rafael & Matthew: this is a resend - original was sent to wrong linux-kernel address. Also updated, so just ignore the earlier emails.]
With 2.6.25-git I lost sound on my Dell XPS M1330 laptop. There seems to be two issues at hand here: 1. Analog output is listed, but emits no sound (just silence), and 2. Digital out device is missing.
Issue #1 is bisected in this thread. #2 is still work in progress, and will be posted as a separate thread.
Please try my ALSA git tree
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6.git
One patch (removing master hack from headphone pin) would fix your
problem. At least, I have some reports that the latest ALSA tree
works. If it still doesn't work, give the alsa-info.sh output (the
script is found in www.alsa-project.org "Debug" section).
If the issue #2 is about HDMI, I'm afraid it won't work until Nvidia
video driver supports the HDMI audio output.