resolutions for intel i855GM

Keith Packard keithp at
Sat Oct 6 12:33:48 PDT 2007

On Sat, 2007-10-06 at 16:08 +0200, davidek at wrote:

> The common mode is only 1024x768.... I wonder whether I can achieve the
> mode of 1280x1024 on LVDS ?? Changing the Modes line in Screen/Display
> subsection in /etc/X11/xorg.conf does not have any effect...... Is there a
> way to force  intel driver to use other modes ???

Yes, you can add the 1280x1024 mode to the LVDS output:

$ xrandr --addmode LVDS 1280x1024
$ xrandr --output LVDS --mode 1280x1024

RandR doesn't really deal with hardware scalers very well; I'm extending
it to expose a full projective transformation to the user which should
make it possible to just set the 'native' mode and let the user
configure whatever pixel size they prefer.

keith.packard at
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