Volume hotkeys don't work once modified

[Egmont Koblinger]

Go to System Settings -> Keyboard -> Shortcuts -> Sound and Media.

The default for "Volume up" is "Audio raise volume". (On my laptop it's Fn+F8.) The shortcut key works as expected.

Click to change the accelerator, and specify the old value again. You'll see "Audio raise volume" appearing again. But it stops working!

In dconf-editor, go to org.gnome.settings-daemon.plugins.media-keys. Notice that the value of "volume-up" changed from the default XF86AudioRaiseVolume to AudioRaiseVolume. Resetting to the default fixes the hotkey.

The same problem holds for volume down and mute too.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: unity-control-center 14.04.3+14.04.20140410-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Apr 28 23:14:01 2014
InstallationDate: Installed on 2012-05-30 (698 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
SourcePackage: unity-control-center
UpgradeStatus: Upgraded to trusty on 2014-03-25 (34 days ago)
usr_lib_unity-control-center:
 activity-log-manager 0.9.7-0ubuntu14
 deja-dup 30.0-0ubuntu4
 gnome-control-center 1:3.6.3-0ubuntu56

[Launchpad Janitor (janitor)]

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