Red Hat Bugzilla – Bug 309271
Capture not working?
Last modified: 2009-01-08 23:54:55 EST
Description of problem:
Both 'Test' buttons in the 'Audio Conferencing' section of
The capture 'Test' button in gnome-sound-properties shows this error after a few
Failed to construct test pipeline for 'gconfaudiosrc ! audioconvert !
audioresample ! gconfaudiosink profile=chat'
Version-Release number of selected component (if applicable):
Right now it's just the Test button for Capture that doesn't work. Here's what
1. I click the button.
2. The button stays depressed for a few seconds.
3. A dialog pops up with this error message: "Failed to construct test pipeline
for 'gconfaudiosrc ! audioconvert ! audioresample ! gconfaudiosink profile=chat'"
4. A horrible reverberating feedback sound begins to play. Usually closing the
dialog stops it, but sometimes not.
5. Any sound played while the feedback is audible feeds into it.
6. Muting the input device in pavucontrol stops the feedback sound, but unmuting
it allows it to return.
I can confirm that the Test button for capture doesn't work when Pulseaudio is
selected, but the error i get is a bit differnt:
gconfaudiosrc ! audioconvert ! audioresample ! gconfaudiosink profile=chat:
Failed to connect stream: OK
On the cmdline, I see
sound-properties-Message: Error running pipeline 'gconfaudiosrc ! audioconvert !
audioresample ! gconfaudiosink profile=chat': Failed to connect stream: OK
[pulsesrc.c(427): gst_pulsesrc_prepare (): /pipeline0/gconfaudiosrc0/bin1/pulsesrc0]
Hmm, I am not even sure if that can ever work, because the pipeline is missing a
delay element. At least in older GST this did not work properly unless you had
some very special buffering set up. I will check this out and look what the
current status of this is.
Should not be a blocker, according to Lennart. Also pretty much unfixable.
Downgrading to target.
Lennart, is it only the Test button that won't work, or are you saying sound
capture is broken?
Based on the date this bug was created, it appears to have been reported
during the development of Fedora 8. In order to refocus our efforts as
a project we are changing the version of this bug to '8'.
If this bug still exists in rawhide, please change the version back to
(If you're unable to change the bug's version, add a comment to the bug
and someone will change it for you.)
Thanks for your help and we apologize for the interruption.
The process we're following is outlined here:
We will be following the process here:
http://fedoraproject.org/wiki/BugZappers/HouseKeeping to ensure this
doesn't happen again.
Yeah, sound capture still doesn't work at all even in rawhide. Let alone the
This message is a reminder that Fedora 8 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
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Fedora 8 changed to end-of-life (EOL) status on 2009-01-07. Fedora 8 is
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