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[Matthew Paul Thomas <mpt@xxxxxxxxxxxxx>]

Unfortunately the "Desired solution" here seems to contradict itself.

I agree with Lars and John that volume should be system-wide: "changes
made to the volume control in the Unity Greeter should carry through to
the logged in session and vice versa". That's unfortunate if one of your
family is hard of hearing and the rest are not: you'll often be changing
the volume when switching users, same as you have to with a shared TV or
radio. But the alternative would be more common and worse: you'd mute
sound in the session, only for startup or login screen sounds to wake
everyone or scare the cat. And while on a PC it might be just annoying,
on a phone it would seem especially silly to have one volume setting for
the lock screen and one volume setting for everything else.

But apply that to the example given. User B logs in, mutes the sound,
and locks or logs out; the login screen now has muted sound too. User A
logs in, sets the volume to 100%, and locks or logs out; the login
screen now has volume 100% too. User B returns and selects themselves in
the login screen. What, then, would be the point of "the sound indicator
[changing] to display the muted state"? After all, when B finishes
logging in, they'll have volume of 100%!

I've updated the spec to define volume and sound output as global
settings. <https://wiki.ubuntu.com/Sound?action=diff&rev2=104&rev1=103>

** Changed in: pulseaudio (Ubuntu)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/840777

Title:
  Muting sound indicator in Unity Greeter does not mute sound on login

Status in Ayatana Design:
  Fix Committed
Status in Sound Menu:
  Invalid
Status in Unity Greeter:
  Invalid
Status in “pulseaudio” package in Ubuntu:
  Triaged
Status in “pulseaudio” source package in Raring:
  New

Bug description:
  I am using beta edition of Ubuntu 11.10,with lightdm 0.9.3-0ubuntu8,and unity 4.12.0-0ubuntu2,
  There is a new feature in Display Manager(well,I didn't notice it in gdm,but it might have been there as well),That you can mute the sound so that login sound wont play(This option exists in the top of the lightdm login page,when you turn on ubuntu and load it)However,Login sound will still play and sound settings will change regardless of what you choose.
  I should add that,this happens only after a reboot or shutdown,boot again,and not when you logout and login again

  Desired solution:
  - Any changes made to the volume control in the Unity Greeter should carry through to the logged in session and vice versa.  
  - For example, if a user changes or mutes the volume in the Unity Greeter, when they are logged in to their session this value should be carried over
  - The other way around is also true, if a user changes or mutes the volume in their session, when they log out this value should be displayed in the greeter.
  - Sound settings are stored individually on a per user account basis.  The sound settings displayed in the greeter should change in line with the currently focused user account.  So for example User A is currently focused and has has volume at 100%. If the focus in the greeter is changed to User B (who has volume muted), the sound indicator should change to display the muted state.

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