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My laptop is Asus N53S. I'm using Ubuntu 12.04 LTS. Installed bumblebee to use nvidia optimus (Nvidia Geforce GT540M) - animations, performance in games are excellent.

But sometimes when I'm working with some programs I'm getting distorted display. Please look at screenshots:

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up vote 3 down vote accepted

I have an UX32VD with Optimus - I have used the following kernel options, and have never seen corrupted images..

Run this command in a Terminal window (Ctrl+Alt+T):

gksudo gedit /etc/default/grub

That opens /etc/default/grub in a text editor. Add the following line to the file:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nmi_watchdog=0 apparmor=0 pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1"

Save the file and quit the text editor.

Run this command to regenerate grub.cfg:

sudo update-grub

Reboot afterwards.

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it's seems everything is ok. thank you very much! –  Anar Jafarov Jul 29 '12 at 20:33
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