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Thread: No sound after switching user or locking screen.

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  1. #1
    Join Date
    Jul 2010
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    England
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    Ubuntu Development Release

    Question No sound after switching user or locking screen.

    Hey there. My problem started when I updated Ubuntu 10.10 developer release (or whatever it's called ) to Ubuntu 10.10 Final. When I switch user or lock the screen and log back in, my computer makes no sound. I know it's not muted since I can see that in the volume control. The only way I can fix it is by restarting my computer.
    Any help?
    If you need any more info please ask
    Last edited by JimJam707; October 30th, 2010 at 07:55 PM.

  2. #2
    Join Date
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    Ubuntu Development Release

    Re: No sound after switching user or locking screen.

    I hate to bump but.
    BUMP

  3. #3
    Join Date
    Jul 2010
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    England
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    Ubuntu Development Release

    Re: No sound after switching user or locking screen.

    Sorry but this is annoying me.
    Bump.

  4. #4
    Join Date
    Feb 2009
    Location
    UK
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    83
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: No sound after switching user or locking screen.

    I have a similar problem.

    The scenario I have is that sound works fine for the first user who logs onto the system, but when the session is switched to another user they often are unable to hear any sound.

    The applications typically being used where the problems are experienced are banshee and Firefox (browsing iplayer, you tube or similar).

    It appears if one user is using / has used sound and their session is still active - then no other users can have sound ... I know this shouldn't be the case!

    A not very good workaround is to either log out other users, or force reloading alsa using
    Code:
    sudo alsa force-reload
    Am using Ubuntu 10.10 64-bit (I had the same problem in Ubuntu 10.04 as well). I think I am running alsa version 1.0.23 (at least this is what alsactl --version returns), and pulse audio pulseaudio 0.9.21-63-gd3efa-dirty (found by running pulseaudio --version).

    Would appreciate help if there is a known fix or some guidance on steps to try and work through, as this issue doesn't appear to be covered in Ubuntu community sound documentation.

    Thanks

  5. #5
    Join Date
    Sep 2006
    Location
    California
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    1,325
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    Ubuntu 12.04 Precise Pangolin

    Re: No sound after switching user or locking screen.

    I have to assume that the problem is with pulseaudio. I had zero problems before pulseaudio became the default sound server.

    It never fails. I log in and my sound is fine. Then my wife switches users to check her email. I log her out, and bye-bye sound. The only way to get it back is to restart the computer.

    Is there a command-line shortcut for getting control of the sound back? What sort of a crazy sound server lets whole-system sound be taken over by a secondary user?
    Last edited by ricardisimo; January 18th, 2011 at 02:41 AM.
    “Men are born ignorant, not stupid. They are made stupid by education.” -- Bertrand Russell

  6. #6
    Join Date
    Aug 2008
    Beans
    4

    Re: No sound after switching user or locking screen.

    I have the same problem, but it appears to be linked in someway to either Gmail or facebook on Firefox. I'm not sure how, but ...

    Example:

    My wife and I are both logged in. She has facebook and gmail open.

    I log in.

    I try to play some audio, no sound comes out.
    My volume indicator shows that my volume is turned up.
    I log into my wife's user ID and find that she has muted her volume.
    I un-mute her volume control and return to my user.
    Still no sound.
    I run 'ubuntu-bug audio'; it hangs at the point that it is supposed to be playing a sound test. I leave it running then log into my my wife's ID.

    I start closing her open firefox tabs one by one. After I've closed her open facebook and gmail tabs the sound test starts to play (even though I'm running it under my id, and I'm still logged into her id.)
    I return to my user and try to play audio. It works.

    I have no idea what the cause of the problem is, but it is a consistent fault. Anyone know how to log it as a fault?

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