[ubuntu] Directly shutting the monitor down causing problems at resuming....

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http://ubuntuforums.org – When I suspend the monitor by clicking on Suspend button on right top corner, then it suspends pretty FINE. BUT when I try to suspend by directly shutting the monitor down, when certain processes are running in it, it causes problems at resuming and REQUIRES HARD BOOT at many times.....When I move screen up, there comes a dim light on screen, but nothing appears(black screen) and then it does nothing........This was not the problem in 10.04, but in 12.04 this is one of many problems I am facing....Somebody please help...!! #still coursing myself for upgrading to 12.04...... :( (Hardware)