Log out then log in causes sound to be disabled

[Paddy Landau]

When I log out and then log in again, the sound (both input and output) is disabled.

Work-around: When I restart the machine, the sound is re-enabled.

I have attached four screen-shots (in ScreenShots.tar.bz2) to demonstrate the problem. They are:

1 Applet working.png -- shows the applet (in the panel) in its normal state.
2 Sound settings normal.png -- shows the sound settings dialogue in its normal state.
3 Applet failed.png -- shows the applet (in the panel) after logging out and in again.
4 Sound settings empty.png -- shows the sound settings dialogue after logging out and in again.

Discussed on Ubuntu Forums:
http://ubuntuforums.org/showthread.php?t=1982212

More information:

Ubuntu 12.04 LTS 64-bit, fully updated.
No proprietary drivers.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-control-center 1:3.4.1-0ubuntu2
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: Wed May 23 10:04:24 2012
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/gnome-control-center
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120301)
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANGUAGE=en_GB:en
 LANG=en_GB.UTF-8
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_gnome-control-center:
 activity-log-manager-control-center 0.9.4-0ubuntu3
 deja-dup 22.0-0ubuntu2
 gnome-bluetooth 3.2.2-0ubuntu5
 indicator-datetime 0.3.94-0ubuntu2

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sebastien Bacher (seb128)]

Thank you for your bug report, seems like pulseaudio gets in a broken state, reassigning there

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]