"Toggle Audio Transmission" does not mute SIP audio transmission

[Jeremy Kerr]

During a SIP call, empathy provides a button to mute audio transmission. However, it looks like this does not work: audio is still transmitted to the other party.

To reproduce:

1) Start a SIP call with colleagues
2) Talk to colleagues
3) Click 'Toggle Audio Transmission' button to mute audio
4) Talk to the cat

Expected result: colleagues on the conference call do not hear conversation with the cat.
Actual result: colleagues on the conference call hear conversation with the cat, embarassment ensues.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: empathy 3.4.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.38-generic 3.2.16
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Thu May 24 21:28:09 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20111129.1)
ProcEnviron:
 LANGUAGE=en_AU:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: empathy
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report

Ken, could you have a look, it seems an embarrasing bug if confirmed

[Jeremy Kerr (jk-ozlabs)]

I'm happy to arrange a call if you need a hand with testing.

[Jeremy Kerr (jk-ozlabs)]

If I toggle empathy's mute button while having the 'Input devices' tab of pavucontrol visible, I can see that the level sliders for my built-in audio device are reduced to zero when mute is enabled.

However, I'm not using that device for input to empathy; I'm using a second sound device, a pair of USB headphones. The levels of the USB headphone device is not changed by empathy's mute control.

[Ken VanDine (ken-vandine)]

I looks like empathy might be muting the wrong input when multiple are present.

[Jeremy Kerr (jk-ozlabs)]

It sure does. However, shouldn't it be muting its own pulse sink, rather than muting a pulse source?

[Jeremy Kerr (jk-ozlabs)]

Have upgraded to 3.4.2.1-0ubuntu1; the mute button seems to work now, and mutes its pulse source rather than a (incorrect) sink.

[Bilal Shahid (s9iper1)]

marking as fix released as per last comment # 7