Public bug reported:

After the laptop wakes from sleep or after being in TTY (Ctrl+Alt+F1),
the monitor goes black or noisy and only shows a snippet of the desktop
as if a second monitor is attached to the side.

Ubuntu 12.10
ATI Mobility Radeon HD 5000 Series - 1GB

fglrxinfo...
display: :0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: ATI Mobility Radeon HD 5000 Series 
OpenGL version string: 4.2.11995 Compatibility Profile Context

I have the latest BETA version of Catalyst drivers...
amd-driver-installer-catalyst-12.11-beta11-x86.x86_64.zip

I do not know where better to post the bug.

** Affects: lightdm (Ubuntu)
     Importance: Undecided
         Status: New

** Summary changed:

- Screen loads as if a second monitor is attached after standby, but primary 
monitor stay black
+ Screen loads as if a second monitor is attached after standby, but primary 
monitor stays black

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https://bugs.launchpad.net/bugs/1098155

Title:
  Screen loads as if a second monitor is attached after standby, but
  primary monitor stays black

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