Description of problem: When resuming from suspend no monitors turn on. MATE 1.12.0. I'm not sure what program specifically controls the displays. Steps to Reproduce: 1. Disable internal display and activate external display 2. Suspend system via menu option 3. Resume system using power button Actual results: Neither display turns on. Undocking the laptop(without suspend) triggers the internal display to activate and the lock screen is there. Expected results: System restores previous state with external display only. Additional info: Latitude laptop (Intel GM45/GE45/GS45 Integrated Graphics) with external monitor connected to docking station.
If I suspend by closing the lid the same effect occurs. Again, undocking and re-docking fixes it.
*** This bug has been marked as a duplicate of bug 1276971 ***