Setting Specific Scan Rate in xorg.conf: Puzzled

John DeCarlo johndecarlo at
Wed Apr 5 13:46:00 UTC 2006

On 4/4/06, Kent Borg <kentborg at> wrote:
> Any tips on wrangling xorg.conf so X will do the rates I want would be
> appreciated...

Well, do you have xrandr installed and have you tried running it?  It should
tell you what your system thinks are possible settings for resolution and
refresh rate.

The problem, as I understand it, is that xorg will take the data it gets
from probing the monitor as more authoritative than what you put in the
xorg.conf file.

For example, when I connect to a particular external monitor, it thinks the
optimum resolution is 1680x1200.  Since the monitor only displays 1600x1200,
I get a desktop bigger than the monitor.

A simple "xrandr -s 0"  (because setting 0 is the one I want) allows me to
get things to normal.

It may be possible for you to use xrandr to fix your problem, and have it
run automatically if you want.

John DeCarlo, My Views Are My Own
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