Really strange resolution problems on xorg with a laptop

Polytropon freebsd at
Wed Dec 24 21:54:44 UTC 2008

On Wed, 24 Dec 2008 16:22:40 -0500, "Aryeh M. Friedman" <aryeh.friedman at> wrote:
> Polytropon wrote:
> > Check the DPI settings from your monitor and if they match the
> > settings in xorg.conf. Some programs calculate font sizes
> > according to these values.
> >   
> How do I check that...

Eventually there's a setting in /etc/X11/xorg.conf called
"DisplaySize" that does not match the display size of the
monitor. Take a ruler and check. Then, calculate the dpi
resolution from what the manufacturer says about the amount
of pixels in X and Y (e. g. "1200x800").

	           physical pixels x
	dpi(x) = ---------------------
	         display width in inch


	           physical pixels y
	dpi(y) = ----------------------
	         display height in inch

The dpi resolution chosen by the X server can be determined

	% grep DPI /var/log/Xorg.0.log

This should match the reality.

> btw your name seems familar ever use a public
> access freebsd machine called m-net?

No, must be somebody else. Name is from Homer's Illias. And,
no, it's not Homer Simpson. :-)

>From Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...

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