This seems to be resolved in the latest indicator-sound package.
$ apt-cache policy indicator-sound
indicator-sound:
Installed: 12.10.2+14.10.20141010-0ubuntu1
Candidate: 12.10.2+14.10.20141010-0ubuntu1
Version table:
*** 12.10.2+14.10.20141010-0ubuntu1 0
500
Attached screenshot of behavior.
** Attachment added: Screenshot
https://bugs.launchpad.net/ubuntu/+source/indicator-sound/+bug/1379287/+attachment/4229511/+files/Screenshot%20-%2010092014%20-%2007%3A01%3A27%20AM.png
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** Tags added: i386
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https://bugs.launchpad.net/bugs/1379287
Title:
Blank Volume notification displayed at startup and when scrolling
the indicator.
To manage notifications about
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: indicator-sound (Ubuntu)
Status: New = Confirmed
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I can also confirm it on a 32 bit system.
~$ apt-cache policy indicator-sound
indicator-sound:
Installed: 12.10.2+14.10.20141007-0ubuntu1
Candidate: 12.10.2+14.10.20141007-0ubuntu1
Version table:
*** 12.10.2+14.10.20141007-0ubuntu1 0
500 http://pt.archive.ubuntu.com/ubuntu/
** Tags removed: i386
** Tags added: i686
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https://bugs.launchpad.net/bugs/1379287
Title:
Blank Volume notification displayed at startup and when scrolling
the indicator.
To manage
Potentially fixed in trunk: https://code.launchpad.net/~ted/indicator-
sound/revert-notifications/+merge/237664
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https://bugs.launchpad.net/bugs/1379287
Title:
Blank Volume