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Esteban Knöbl
Asked: 2012-08-05 14:32:44 +0800 CST

Black Screen After Logoff

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Every time I logoff from Ubuntu 12.04 I get a black screen. If I logon again as if I could really see what I'm doing, the screen returns to normal. This doesn't happen with other two users on the same machine, with both of them I can logoff withouth problems. Any clues?

12.04

1 Answers

  1. This is what I have done on my laptop. I have a integrated Intel GPU.

    Force Pipe A Quirk

    This problem typically exhibits itself on Intel graphics hardware (most particularly i855) by locking up the machine when closing the lid. The fix for this issue is to quirk your card to force enabling Pipe A. If you suspect you're having this bug, try setting this option in your xorg.conf:

    Section "Device"
    ..
    Option "ForceEnablePipeA" "true"
EndSection

    Fore more reference visit the source of the above quote:
    https://wiki.ubuntu.com/X/Quirks#Force_Pipe_A_Quirk

    There are some possible fixes about ATI and nVidia.

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