indicator-sound menu icon disappeared after volume down to zero

[TienFu Chen]

On the HP commercial notebooks, there're function keys to control volume.
The menu volume icon will be disappeared if we volume down
(with key combination: Fn+F6, you can also emulate the keys with "xdotool key XF86AudioLowerVolume") to zero then logout and back in.
But if we just zero down volume(with the single volume on/off button), then logout and back in, the volume icon is still there.

This issue is fixed with installing indicator-sound_12.10.2+14.10.20141010-0ubuntu1(Utopic)

Package: indicator-sound_12.10.2+14.04.20140401-0ubuntu1

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: indicator-sound 12.10.2+14.04.20140401-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-38.65stella1-generic 3.13.11.8
Uname: Linux 3.13.0-38-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
Date: Wed Feb 11 14:18:50 2015
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-stella-datong140729-trusty-amd64-20150114-3
InstallationDate: Installed on 2015-01-29 (13 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150114-08:50
SourcePackage: indicator-sound
UpgradeStatus: No upgrade log present (probably fresh install)

[Ara Pulido (ara)]

I cannot reproduce this on stock Ubuntu

Have you tried reproducing this on stock Ubuntu?

[TienFu Chen (ctf)]

@Ara:
I have verified it again under stock 14.04.2 with fully system upgraded on HP Pez 6, I can reproduce it.