** Description changed:

  Ubuntu 16.04.2 LTS using Unity
  unity-greeter 16.04.2-0ubuntu1
  
- On a HiDPI monitor on a Dell XPS 13 9343 laptop, if you uncheck
- com.canonical.unity-greeter -> draw-user-backgrounds and then lock the
- desktop:
+ [Impact]
+ On a HiDPI monitor on a Dell XPS 13 9343 laptop, if you uncheck 
com.canonical.unity-greeter -> draw-user-backgrounds and then lock the desktop:
  
  Expected: the purple placeholder wallpaper should cover the entire desktop
  Observed: the purple placeholder wallpaper only covers the top-left part of 
the desktop
  
  I'm attaching an image showing roughly what the desktop looks like when
  it's locked. The green rectangle is the part covered by the purple
  wallpaper, the red is stuff that should not be visible when locked, and
  the yellow is the usual name/password entry box that is partially
  transparent.
  
  I'm marking this bug as a security vulnerability because it allows
  someone to see part of a user's desktop even when the desktop is locked.
+ 
+ [Test Case]
+ 1. Make sure to use an HiDPI monitor
+ 2. Open terminal
+ 3. gsettings set com.canonical.unity-greeter draw-user-backgrounds false
+ 4. Lock the screen
+ 5. Make sure the background is properly drawn.
+ 
+ [Potential Regression]
+ Make sure lockscreen background is drawn properly on an non-HiDPI monitor 
too. Also make sure that when using "draw-user-backgrounds == true" the 
background is properly drawn.

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https://bugs.launchpad.net/bugs/1666359

Title:
  Lock screen doesn't cover entire desktop on HiDPI display with draw-
  user-backgrounds unchecked

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