DPI in intel modesetting driver

Adam Jackson ajackson at redhat.com
Thu Jan 4 20:00:13 UTC 2007


On Thu, 2007-01-04 at 19:51 +0000, Leo wrote:
> * Adam Jackson (2007-01-04 10:17 -0500) said:
>   ^^^^^^^^^^^^
> > The DPI setting reported by X is the physical dots per inch of the
> > monitor.  You never want to override this, because it determines how
> > big Freetype thinks pixels really are, and therefore affects
> > coloration when doing subpixel antialiasing.  X should be getting it
> > correct.
> 
> But X detects the physical DPI wrong. My screen is LCD on a laptop
> DEll 700M with 1280x800 pixels (262x164 millimeters).
> 
> If I set "DisplaySize 261 163" in xorg.conf. The dpi is 124x124.

Does your X log show an EDID block being printed?

- ajax




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