>> Is there a way to digitally discover the true height and width of your
>> screen in mm?
>
>
> If you know the shadow mask/dot pitch [1] or the real pixel per inch of your
> screen, then calculate it. This way you see if software reports wrong
> values.


Got it:

http://pixensity.com/list/dell-xps-13-4331/


> BTW: X supports -dpi parameter/option. I use it in my xserverrc (xinit
> server script) configuration and the Xorg.0.log reports the correct and
> prior calculated values.


I think I read that there is no xorg.conf directive for DPI.  But X
should get it right if I use:

DisplaySize 294 166

- Grant

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