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I installed Ubuntu 12.04 on HP DM4 Beats Edition and the suspend and wake up were working perfectly, but after an update I can't see 'Caps Lock' light, Wireless light etc, the fan is running but the screen stays black. Anyone else has spotted this? Is this a bug? Any idea how to fix it?

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closed as off topic by binW, jrg Apr 23 '12 at 22:49

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possible duplicate askubuntu.com/questions/19111/… –  binW Apr 23 '12 at 13:37
    
possible duplicate askubuntu.com/questions/14289/… –  binW Apr 23 '12 at 13:38
    
Welcome to Ask Ubuntu! This question should instead be filed as a bug report, thanks! Instructions here. –  Jorge Castro Apr 23 '12 at 22:47
    
I am having the same issue, my solution is to after wakeup, press Ctrl+Alt+F1, then Ctrl+Alt+F7, and my desktop shows up. –  luskan May 9 '12 at 11:00