Sorry I dont see how upstream is going to fix this, however there is a very quick fix for this.
Index: gnome-control-center-3.4.2/panels/sound-nua/gvc-mixer-dialog.c =================================================================== --- gnome-control-center-3.4.2.orig/panels/sound-nua/gvc-mixer-dialog.c 2012-09-18 14:54:02.686384033 +0800 +++ gnome-control-center-3.4.2/panels/sound-nua/gvc-mixer-dialog.c 2012-09-18 16:16:52.255026778 +0800 @@ -509,6 +509,8 @@ /* Make sure we do not unmute muted streams, there's a button for that */ if (volume == 0.0) gvc_mixer_stream_set_is_muted (stream, TRUE); + else + gvc_mixer_stream_set_is_muted (stream, FALSE); /* Only push the volume if it's actually changed */ if (gvc_mixer_stream_set_volume(stream, (pa_volume_t) rounded) != FALSE) gvc_mixer_stream_push_volume (stream); Index: gnome-control-center-3.4.2/panels/sound/gvc-mixer-dialog.c =================================================================== --- gnome-control-center-3.4.2.orig/panels/sound/gvc-mixer-dialog.c 2012-03-05 22:04:55.000000000 +0800 +++ gnome-control-center-3.4.2/panels/sound/gvc-mixer-dialog.c 2012-09-18 16:16:17.238853143 +0800 @@ -784,6 +784,8 @@ /* Make sure we do not unmute muted streams, there's a button for that */ if (volume == 0.0) gvc_mixer_stream_set_is_muted (stream, TRUE); + else + gvc_mixer_stream_set_is_muted (stream, FALSE); /* Only push the volume if it's actually changed */ if (gvc_mixer_stream_set_volume(stream, (pa_volume_t) rounded) != FALSE) gvc_mixer_stream_push_volume (stream); -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/986692 Title: Unmutting sound effects using the slider doesn't work To manage notifications about this bug go to: https://bugs.launchpad.net/gnome-control-center/+bug/986692/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs