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I have a Dell 1464 and installed Ubuntu on an External drive. After using ubuntu, I realized that a section of 3 or more hours make my screen go pixelated (Actually the blend of colors seems to get distorted and looked hideous). I use ATI Radeon Mobility HD 5450 and have installed the required driver. I'm new to linux.

I'm using ubuntu 10.10, fglrx 2.8.780-ubuntu2

alt text

Notice the dark area behind the guy. The color seems to get distored.

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    If you could take a picture that would really help!
    – Jorge Castro
    Nov 17, 2010 at 13:40
  • are you using the fglrx driver? Sounds like a problem with open-source drivers that I've experienced before.
    – RolandiXor
    Nov 17, 2010 at 13:50
  • Yes. Fglrx driver it is. After some time even video start to become pixelated, not just images and desktop !
    – Istari8th
    Nov 17, 2010 at 13:59
  • please mention the version of ubuntu and fglrx driver.
    – tinhed
    Nov 17, 2010 at 15:29
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    I can't see any kind distortion in your screenshot...but maybe that's just me.
    – Bobby
    Nov 22, 2010 at 17:21

2 Answers 2

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Well, if there is nothing wrong with screenshot (I can't see it either), most probably problem is with hardware. Dell do have excellent bootable diagnostics software, you should try it. If it founds some problems, warranty service can help (if warranty is still valid).

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your driver seems to be really outdated, i suggest to install the new one from AMD ATI.

refer to this page http://wiki.cchtml.com/index.php/Ubuntu_Maverick_Installation_Guide for further notes.

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