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On 12.04, the login screen doesn't timeout or go to screensaver after a set time. I have a number of machines in a testbed that spend a lot of time waiting for logins and I'm afraid the monitors will get damaged. Thanks

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This behavior has now gone in Precise after an upgrade (I admit, I experienced that problem too). I suggest you to upgrade your machines. May be that was a bug

sudo apt-get update
sudo apt-get upgrade
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Your monitors won't be damaged from lack of screensaver :D

  1. To set timed screen turn off with lock enter System Settings -> Brightness and Lock.

  2. Set "Turn screen off when inactive for:"

  3. Set "Lock" to ON

  4. Set "Lock screen after:" to "Screen turns off"

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