Its very clear to see the six apart screen '六分屏' on Lenovo Y450 Ideapad.Due to Geforce m1xx series graphics drivers updating,,
Corrupted screen: "Six screens" issueFor some users using Geforce GT 100M's, the screen turns out corrupted after X starts; divided into 6 sections with a resolution limited to 640x480. The same problem has been recently reported with Quadro 2000 and hi-res displays.
To solve this problem, enable the Validation ModeNoTotalSizeCheckin sectionDevice:
Section "Device" ... Option "ModeValidation" "NoTotalSizeCheck" ... EndSection
[1]
sudo gedit /etc/X11/xorg.conf
OR sudo vim /etc/X11/xorg.conf
Find and change follow the above shown session.
Save it with an Enter on restart~!
Ref:
[1] “NVIDIA - ArchWiki.” [Online]. Available: https://wiki.archlinux.org/index.php/NVIDIA#Corrupted_screen:_.22Six_screens.22_issue. [Accessed: 11-Sep-2012].
