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How to change the settings to the screen locker not to mute the sound while the screen is locked?

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I've seen posts asking for a way to actually mute the sound when the screen gets locked but not the other way around. It might help if you give more info. – Este Sep 14 '12 at 1:03
Just a question about your hardware, are the speakers built into the monitor? Mine are and the sound stops because the monitor is going to sleep, thus cutting the power to the speakers. Ubuntu will not be able to control this. – Chris Carter Sep 16 '12 at 16:00
I concur with @ChrisCarter. This must be a hardware problem. – mniess Sep 18 '12 at 14:37
I think that the questioner is talking about how to unmute the sound when screen is locked...? – hakermania Sep 19 '12 at 1:04

This will send the unmute command when the screen is locked, which might work. It will definitely work (tested) if what you want to do is just to unmute the sound when the screen is locked.

You can use Cuttlefish:

Install via the software center

Cuttlefish is a tool that lets you do everything you want to under specific circumstances, like while locking your screen. Please see an introduction to Cuttlefish (it is very easy to use, but it would still be a lot easier with a video as an example):

So, you generally have to

  1. Create a new Reflex and give it a name that you prefer
  2. Click on 'Activated by stimulus'
  3. Check as stimulus the 'Screen is locked' (under Screensaver header)
  4. Go to the Reaction tab and add a new reaction from bottom left
  5. Go to Applications->Start application (advanced mode)->OK
  6. Click on the 'executable' which is by default firefox and alter it to /usr/bin/amixer (head to /usr/bin and select amixer
  7. At the parameters below add set 'Master' unmute

Tested and works fine under Ubuntu 12.04

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You could try to install another screensaver alternative that could have another effect on your hardware: see How can I change or install screensavers?

Potential workaround - installing xscreensaver

sudo apt-get install xscreensaver xscreensaver-gl-extra xscreensaver-data-extra

Now remove gnome-screensaver

sudo apt-get remove gnome-screensaver

Now start the xscreensaver configuration tool - from a terminal:


there you can enter the time until screen-lock.

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