Bug 344911

If you go into System->Preferences->Hardware->Sound what is selected for default
mixer tracks at the bottom of the capplet?

Device: HDA Intel (Alsa mixer)
PCM
Micrphone
Mic Boost
Capture
Capture 1
Beep
Docking Mic
Docking Mic Boost
Internal Mic
Internal Mic Boost

I have realized that the same bug exists in Ubuntu 7.10
https://bugs.launchpad.net/ubuntu/+bug/136287

The problem is that if you go into System->Preferences->Hardware->Sound nothing
is selected for the default mixer track and somehow the multimedia keys get
bound to microphone level by default. Choosing "PCM" track from the list fixes
the bug. However it should work by default as expected. So I am leaving this bug
open and hope it gets fixed before Fedora 8 release.

Created attachment 259341 [details]
Sound Preferences Screenshot

This problem is still present in Fedora 8. This is how "Sound Preferences"
window looks like right after install. As you can see none of the channels are
selected. By default the volume keys for some reason change microphone's
volume.

I guess it means this doesn't work as it should on your system:
		/* If no track stored in GConf is avaiable try to use master track */
		if (self->_priv->mixer_tracks == NULL)
		{
			for (m = gst_mixer_list_tracks (self->_priv->mixer); m != NULL; m = m->next)
			{
				GstMixerTrack *track = GST_MIXER_TRACK (m->data);

				if (GST_MIXER_TRACK_HAS_FLAG (track, GST_MIXER_TRACK_MASTER)) {
					self->_priv->mixer_tracks = g_list_append (self->_priv->mixer_tracks,
g_object_ref (track));
					break;
				}
			}
		}

The problem is NOT with control-center but with gstreamer. I have a fix on the
Ubuntu bugzilla.

https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/174292

Thanks for the insight.

I have placed a bugzilla in the gstreamer bugzilla:

http://bugzilla.gnome.org/show_bug.cgi?id=506928

I'll wait on feedback from upstream for that one. The patch seems to be more
intrusive than it needs to be, or a work-around.

Test packages and feedback at:
https://admin.fedoraproject.org/updates/F8/pending/gstreamer-plugins-base-0.10.15-2.fc8

This bug is still present in gstreamer-plugins-base-0.10.15-2.fc8

(In reply to comment #11)
> This bug is still present in gstreamer-plugins-base-0.10.15-2.fc8

Did you restart your session, or at least kill gnome-settings-daemon? The patch
added is the same reported as working by Jerone.

I upgraded to gstreamer-plugins-base-0.10.15-2.fc8 then rebooted the computer,
then created a new user. Logged in under the new user and volume keys were bound
to the microphone volume.

I put the wrong patch in ;)
But I'm leaving it in as it fixes some issues with gnome-volume-control (and
it's my patch).

Updated patches and errata at:
https://admin.fedoraproject.org/updates/F8/pending/gstreamer-plugins-base-0.10.15-3.fc8

gstreamer-plugins-base-0.10.15-3.fc8 is working as expected.

gstreamer-plugins-base-0.10.15-3.fc8 has been pushed to the Fedora 8 testing repository.  If problems still persist, please make note of it in this bug report.
 If you want to test the update, you can install it with 
 su -c 'yum --enablerepo=updates-testing update gstreamer-plugins-base'

gstreamer-plugins-base-0.10.15-3.fc8 has been pushed to the Fedora 8 stable repository.  If problems still persist, please make note of it in this bug report.