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[all variants] Lenovo Y550 with NVIDIA GT 240M

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linux-howto

http://ubuntuforums.org – I'm having trouble with my display, as it is very shaky and showing a lot of "static". There's no easy way to explain this. it looks like tiny bar-visualization for a rock song, but they are 90 degrees rotated. It gets worse on the right side of the screen. Someone with the exact same problem: http://www.nvnews.net/vbulletin/showthread.php?t=138205 (Hardware)