Description of problem:
It doesn't seem to be possible to send raw PCM audio out my motherboard's
optical sound port any more. This works in Fedora 7 (for doing things like
playing DVDs with 5.1 sound)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. try to find PCM output in mixer - it ain't there
no raw audio stream output
raw audio output
Here's the script I was using to successfully play DVDs on Fedora 7:
amixer set IEC958 unmute
amixer set 'IEC958 Playback AC97-SPSA' 0
amixer set 'IEC958 Playback Source' PCM
exec mplayer dvd://1 -alang en -ao alsa:device=hw=0.0 -ac hwdts,hwac3,
-monitoraspect 16:9 -fs
I can't find any equivalent on Fedora 8.
Created attachment 254891 [details]
scsconfig.log saved from system-config-soundcard
After doing some reading, I have a feeling this has something to do
with pulseaudio. Are there instructions for dummies somewhere on how to
disable pulseaudio so I can see if it works once I do that?
OK, definitely a pulseaudio issue. I used a big hammer and moved
/etc/alsa/pcm/pulseaudio.conf and /etc/alsa/pulse-default.conf
to a different directory, and everything is back to "normal".
Now I just gotta figure out the right way to do this without such
a big hammer (if pulseaudio was supposed to make my life simpler,
it didn't work :-).
# rpm -e alsa-plugins-pulseaudio --nodeps
sound comes back again. I have all other things installed but removed this one
The issue is with that package (alsa-plugins-pulseaudio)
Perhaps related to my bug #385481 ? I can't get SPDIF out to work in F8 on an
Audigy. Worked fine in F7 and lower.
okay, moved to pulseaudio.
This might be related?
Installed Fedora 8 some time ago on a Dell Dimension 5150. All was well. I
also use the digital output to a surround sound processor. Everything has been
working well. Until today. Yum update pulled a bunch of packages having to do
with Pulse Audio. After a reboot the machine lost its' ability to make noise.
Periodically after updates I have to go back into the switches tab in the volume
control and recheck the "SB Live Analog/Digital Output Jack" as that must be
checked for this to work. It's checked. No sound. I checked all 5 devices
that can be selected in the Volume Control Preferences applet:
SB Live 5.1 [SB0220] (Alsa mixer)<-- What normally works
SigmaTel something <---Never use.
There were more after that Pulse Audio thing was installed but I'm down to 2 for
yum remove pulseaudio
and the problem was fixed.
pulseaudio i386 0.9.8-5.fc8 updates 334 k
is a bad egg.
For now PA doesn't support SPDIF natively. You can always bypass PA if you need
spdif support by using "spdif:0" (or suchlike) as ALSA device instead of the
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