I installed 12.04 LTS a few days ago and have encountered this problem with the screen.
First: When I shifted between windows or I moved up and down through a website(s), the screen seemed to have like stripes, and for two or three seconds or so it doesn't work.
Second: The other day I succeed in fixing it, but only when I'm using the battery. Whenever I plug the charger in, the problem appears again. It happens when I take out the battery and plug the charger in, and also when I've been using the battery, and I plug the charger in.
I don't really know what to do.
My Laptop specifications are:
- Toshiba Satellite L850 - 150
- AMD Radeon HD 7670M Graphics Gard
Any help will be to assistance, to try and work out my problem.