Video issue after suspending Ubuntu 12.04

I installed the version 12.04 LTS on a Netbook Asus EEE PC 1101HA. I had a video problem at the boot time but it was solved by following these steps

>> https://wiki.ubuntu.com/HardwareSupp...eoCardsPoulsbo

I see that if I suspend the netbook there's no problem. But when I wake it up, it does it but with an issue on the video (The screen is divided in 4)

Please help me with this issue if it's possible of course.

Regards

fix

at login .user and passwd .there is a panal at bottem of screen clik on sesion and chew,s no effect .it will be drive problem .did you search for eeepc install or you just installing ubuntu like a desktop ?.