Bug 376851 - PCM optical output no longer works in fedora 8
Summary: PCM optical output no longer works in fedora 8
Alias: None
Product: Fedora
Classification: Fedora
Component: pulseaudio
Version: 8
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Lennart Poettering
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2007-11-12 02:54 UTC by Tom Horsley
Modified: 2013-01-31 02:44 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2009-01-09 05:09:56 UTC
Type: ---

Attachments (Terms of Use)
scsconfig.log saved from system-config-soundcard (50.02 KB, text/plain)
2007-11-12 02:54 UTC, Tom Horsley
no flags Details

Description Tom Horsley 2007-11-12 02:54:18 UTC
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):

How reproducible:

Steps to Reproduce:
1. try to find PCM output in mixer - it ain't there
Actual results:

no raw audio stream output

Expected results:

raw audio output

Additional info:

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.

Comment 1 Tom Horsley 2007-11-12 02:54:18 UTC
Created attachment 254891 [details]
scsconfig.log saved from system-config-soundcard

Comment 2 Tom Horsley 2007-11-12 23:38:09 UTC
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?

Comment 3 Tom Horsley 2007-11-13 03:07:58 UTC
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 :-).

Comment 4 Pitam 2007-11-15 10:54:53 UTC
remove alsa-plugins-pulseaudio;

# 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)

Comment 5 Trevor Cordes 2007-11-15 23:50:36 UTC
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.

Comment 6 Martin Stransky 2007-12-07 11:12:55 UTC
okay, moved to pulseaudio.

Comment 7 Joseph A. Farmer 2008-01-30 00:24:48 UTC
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
a reason:

yum remove pulseaudio

and the problem was fixed.

pulseaudio              i386       0.9.8-5.fc8      updates           334 k
is a bad egg.

Comment 8 Lennart Poettering 2008-03-28 20:11:16 UTC
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

Comment 9 Bug Zapper 2008-11-26 08:20:01 UTC
This message is a reminder that Fedora 8 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 8.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '8'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 8's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 8 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
bug to the applicable version.  If you are unable to change the version, 
please add a comment here and someone will do it for you.

Although we aim to fix as many bugs as possible during every release's 
lifetime, sometimes those efforts are overtaken by events.  Often a 
more recent Fedora release includes newer upstream software that fixes 
bugs or makes them obsolete.

The process we are following is described here: 

Comment 10 Bug Zapper 2009-01-09 05:09:56 UTC
Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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