[ubuntu] Won't suspend

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http://ubuntuforums.org – Hi, my computer is having issues when I try to put it to sleep (suspend). When I close my laptop (in power settings, i have ti set to suspend) or hit the suspend but in the menu bar, the computer screen goes black (but still backlit) and it continues to run (also, the wifi indicator shows that wifi is turn off). Nothing I can do will return the computer to normal either, and I have to forcibly shut it down with the power switch. I have just recently installed 12.04, and I have Myunity and compiz config installed, and transmission is usually running (i made sure the "dont hibernate button& (Hardware)