Ubuntu – Recent LCD trouble with 12.04 on 2010 Macbook Air 11 (3,1)


I've been using Ubuntu 12.04 on my Macbook Air 3,1 (11", late 2010 model) and it's been working well, after applying the post-installation patches found on the wiki.

Yesterday (July 24, 2012), after doing an apt-get dist-upgrade, I noticed a glitch with the LCD screen: there is a vertical row of colored pixels that moves from top to bottom, with a marquee-like effect.

I do not think this is a hardware problem, since it does not appear when I boot the computer into MacOS.

The glitch is about 2 mm from the right edge of the screen, so it is not too noticeable (there's usually a scroll bar there), but I still would like to make it disappear.

I did a brief Google search for this problem but haven't found anything yet. Can you suggest how I can investigate and hopefully fix this?

Best Answer

  • I've got exactly the same issue here on the MBA 2010 late 11' thus it might be model-specific. It appeared after the last update as you described.

    after playing around a bit ... here is what worked for me.

    I installed the nvidia-current drivers from the softwar center... After a reboot X was started with the nvidia drivers and the problem was gone. BUT ... the brightness controls were gone too...

    Adding the line

    Option "RegistryDwords" "EnableBrightnessControl=1" in the Section "Device" of /etc/X11/xorg.conf solved that issue.

    See: Brightness not working after installing NVIDIA driver and http://ubuntuforums.org/showthread.php?t=1973581 for more information.

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