** Description changed:

- When I leave my Lenovo Yoga 2 idle for about 10 seconds,  the screen turns 
black. If I enter some input (touchpad or keyboard) or when I wait for about 10 
seconds the screen turns on again.
- I'm experiencing this problem since switching to Ubuntu Gnome 15.10. 
Sometimes I can get fix it by rebooting the system, but the problem reappears 
after some time; sometimes the problem disappears from itself.
+ Sometimes on my Lenovo Yoga 2 the screen is turned off every 10 seconds.
+ Note that this happens even when I actively use the machine, I don't
+ have to leave it idle.
+ 
+ If I then enter some input (via touchpad or keyboard) or when I wait for 
another 10 seconds the screen turns on again.
+ I'm experiencing this problem since switching to Ubuntu Gnome 15.10. 
Sometimes I can fix it by rebooting the system, but the problem reappears after 
a few days; sometimes the problem disappears by itself.
  
  All power settings are changed to never dim screen brightness or blank
  the screen. The notebook is connected to the power supply.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: gnome-shell 3.14.4-0ubuntu1
  ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3
  Uname: Linux 3.19.0-16-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Mon May 18 09:33:11 2015
  DisplayManager: gdm
  GsettingsChanges:
   b'org.gnome.shell.calendar' b'show-weekdate' b'true'
   b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'"
   b'org.gnome.desktop.interface' b'clock-show-date' b'true'
  InstallationDate: Installed on 2015-04-27 (20 days ago)
  InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 
(20150422)
  SourcePackage: gnome-shell
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/bugs/1456084

Title:
  screen turns off after 10 seconds

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