Random pink / blue lines on screen which disappears with image

[rock2]

Hi,

I have a Dell Studio 1555. It was running Windows 7 and now i have changed it to Ubuntu 12.04.1.

The problem I have is a bit ridiculous. For some pictures alone, a quarter portion of the screen shows pink and blue horizontal lines. I tried taking a screen print, but the lines do not appear on them. Also funny thing is, if i scroll the picture up or down, the lines shift in position as well along with the picture.

Searching on Google pointed me to laptops with broken / faulty video cards. But i have a strong feeling this is not so.

I am relatively new to linux. If you think there is something more i can specify to help diagnose, kindly advise.

Regards

Chris

[nerdtron]

Do you have VLC opened (or any other video player)? This happened to me in the past.

[rock2]

It happens when VLC is open as well. Else, while using internet as well for some images this happens. I thought initially it was for dark colored images, but recently started noticing it for light color images.

[Impavidus]

It's probably your graphics driver. I read this laptop has ATI graphics, so maybe you have to install some ATI drivers. It must be mentioned somewhere on this forum how to do it.

[rock2]

Thanks for the prompt replies everyone.

I checked the graphics card driver. I have installed the proprietary ATI driver for Ubuntu. I think it is called catalyst. I am wondering if there is some configuration that i could do to prevent the lines from appearing.

[rock2]

I am sorry to ask this, but i remember having Windows tools from Dell to check the health of LCD Screen. Is it possible to check the health of graphics card by some measure?