Fixing a Display Issue in OpenSuSE 11.1

I have encountered this annoying bug recently on my Linux box. I have a laptop with a widescreen monitor that gives me a 1440×900 desktop area (not much i know). I’ve noticed that with any desktop manager except for KDE3 i would encounter a problem whereby the screen would be displayed at the correct resolution but windows will not maximize to the full screen but instead to an area that is 1024×768 in size at the top left corner of the screen.

The weird thing is that the display driver is configured correctly, and i can see the full screen area and can move the mouse and windows around .. it is just the full-screen on flash and maximizing windows that does not work as needed. Another thing that added to the weirdness is that things are working perfectly fine on KDE3.

Anyway, i found the easy fix to this problem. The following file
/etc/sysconfig/displaymanager contains some configuration for your display manager. The following two lines demonstrate the problem:

DISPLAYMANAGER_RANDR_MODE_VGA="auto"
DISPLAYMANAGER_RANDR_MODE_auto="1024x768_60 64.11 1024 1080 1184 1344 768 769 772 795 -HSync +Vsync"

It says in the comments that this is supposed to help laptop devices somehow .. i didn’t totally understand that part. However, some online searches revealed some advice to comment out one of the lines. What i personally did to fix this problem is modify the first line above so that it won’t refer to the configuration on the second line. So i have something like this:

DISPLAYMANAGER_RANDR_MODE_VGA=""

I am posting this here so that it could help somebody some day … when i was facing this problem i did a ton of search and found nothing. So, if your screen is displaying a small area (1024×768) in the top left corner of your monitor, this might be the fix.

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