[alsa-devel] In 3.8 kernel alsa only talks HDMI, hardware also has S/PDIF optical

Tom Horsley horsley1953 at gmail.com
Tue Mar 12 00:18:01 CET 2013

See https://bugzilla.redhat.com/show_bug.cgi?id=919630
for details.

Comment 4 in that bug is from someone who says it looks
like the driver only created the HDMI and not the separate
optical S/PDIF output.

On my Asus P8H67-V there really are two physically
separate audio outputs. I have the optical port
connected to my receiver for when I want to pass
through the 5.1 audio tracks in movie files and
DVDs and the HDMI connected to the TV for more
ordinary audio (error beeps from the computer, etc).

In kernel 3.7.9 I could output to both devices
(one at a time - never tried simultaneous).

I've seen a bunch of patches in the archives that seem
to be related to this, but if fedora 18 has those patches,
they don't seem to be working.

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