GNOME Bugzilla – Bug 341021
Mute conflict between gnome-volume-applet and gnome-volume-manager
Last modified: 2008-06-02 19:50:04 UTC
That bug has been opened on https://launchpad.net/distros/ubuntu/+source/gnome-applets/+bug/42853 "When both the volume control applet and the volume control application are open, muting the channel using the volume control applet, and restoring the volume does not unmute the channel. Reproduce by: 1) Open the volume control application 2) Move the slider on the applet to the bottom 3) Observe that both systems report the channel muted 4) Move the slider back up 5) Observe that the mute status is different 6) Observe that the channel is muted, although the slider shows it unmuted. ..." There is different bugs around that topic reported already: bug #319139, bug #333438, bug #331764, that might be a duplicate
*** Bug 343848 has been marked as a duplicate of this bug. ***
Still occurs in Volume Control 2.16.1 (gnome-applets isn't the most suitable product).
You can also simply mute and unmute applet, and see that the volume control doesn't unmute. Looks like a g-v-c bug, not an applet bug.
The mute status is actually cached in the GstAlsa mixer bits, instead of being read from the device. gnome-media would need to parse the messages sent over the gstreamer bus to update the status appropriately, and stop muting the tracks when their volume reaches 0 (although I haven't verified that it does that, to be fair). Filed downstream at: https://bugzilla.redhat.com/show_bug.cgi?id=305141
This problem has been fixed in the development version. The fix will be available in the next major software release. Thank you for your bug report. in r3876