Really strange resolution problems on xorg with a laptop

[Jin Guojun[VFF]]

Has this problem been resolved?

I have the same problem for a similar laptop (HP Pavilion dv5120us). 
The X Server 1.4.0 (FreeBSD 6.3-R) works fine, but 1.4.2 (From both 6.4 and 7.1) produce this problem.
My screen is 13.25 inch x 8.25 inch in resolution 1280x800.
The DPI shown in Xorg.0.log is (96, 96), which is correct according to the dpi expression listed below.

Only strange # from the Xorg.0.log is the screen size 310 x 21.
The screen size should be 330 x 301, which is corrected stated in xorg.conf.

I wonder if this is a X Server 1.4.2 bug.
Is anyway to correct this problem? or X 1.4.0 has to be used for this particular laptop till a new X Server released.

-Jin

--------- original message -------------
On Wed, 24 Dec 2008 16:22:40 -0500, "Aryeh M. Friedman" <aryeh.friedman at gmail.com> 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

and

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

The dpi resolution chosen by the X server can be determined
by

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

This should match the reality.