X server sets invalid DPI

Felix Miata mrmazda at earthlink.net
Mon Jan 21 23:39:17 PST 2013

On 2013-01-21 21:07 (GMT+0100) Radoslaw Szkodzinski composed:

> It seems that Xorg is no longer setting correct DPI automatically.
> There was a long flamewar about this silly behavior on bug tracker here:
> https://bugs.freedesktop.org/show_bug.cgi?id=23705
> As recommended, I'm posting here.

Are you sure your distro isn't forcing DPI to 96 surreptitiously? Are you 
sure there is no "Xft.dpi: 96" hiding in an Xresources or other config file 

> This bug above means any XRandr 1.2 supporting card reports incorrect
> DPI to the userland. (e.g. my intel chip)
> There is no way to return to correct behavior. The patch providing the
> option was ignored.

> The only way remaining is to force X server dpi setting with -dpi or
> xrandr --dpi.

This is not true. I just confirmed on Fedora 19 with that 
xorg.conf (and alternatively xorg.conf.d/ in some cases) can be used to force 
DPI instead of using xrandr or a server startup option.

> Could someone actually please fix this misbehavior instead of
> insisting it's the correct one?
> Bug compatibility with inferior OSes should be optional - and there
> are ways to override DPI already available to distros if they want to
> be compatible with Windows older than Vista.


> Invalid DPI causes issues with Freetype antialiasing and tiny font
> sizes on high resolution laptops.


> While it is a non-trivial problem in multi-screen case, I think a best
> compromise should just be selected instead of forcing an outdated
> default.

"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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