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My video card is nvidia GT 9400. Same as title, I upgrade kernel from 3.2.029 to 3.2.0-30 yesterday. After upgrade, 2nd monitor turn to gray & could not configure.

My xorg.conf is http://paste.ubuntu.com/1198200/ And my Xorg.0.log file. http://paste.ubuntu.com/1198169/

Please help me :)

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closed as off topic by Jorge Castro, Mitch, hexafraction, Tom Brossman, jokerdino Oct 13 '12 at 0:12

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. –  Jorge Castro Oct 12 '12 at 17:14

2 Answers 2

If you have installed Nvidia proprietary drivers, try to purge them

sudo apt-get purge nvidia*

and then install them again

 sudo apt-get install nvidia-current-updates-dev 
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Thank you for the answer. I apply your advice - but, It not works property again.

To explain in a little more detail about my PC's status .... When I logged on the first time, both sides of the screen is displayed well. But after 2-3 seconds, 2nd Screen is covered with a gray screen. If I moved mouse cursor(arrow) to 2nd monitor, it changed to X marks.

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Please edit this information into your question. –  user76204 Sep 14 '12 at 1:03

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