Per-User X Windows System Screen Resolution Configuration
D. Hugh Redelmeier
hugh-pmF8o41NoarQT0dZR+AlfA at public.gmane.org
Sun Mar 16 02:26:56 UTC 2008
| From: David C. Chipman <dchipman-rYHPKw+MWrk at public.gmane.org>
| Thanks for our suggestion. I would say, however, that
| as somebody with vision problems (and this is why I'm asking about this
| stuff), the fact that flat-panels *should* be used at their native
| resolution doesn't matter to me. If it's the "eye-bleed" resolution,
| I'll want it lower so I can read the text on the screen. Thank you for
| the suggestion, though. Later,
In theory, the best approach is probably to use the native resolution
but to change X's idea of the physical size of a pixel. That way you
should get text that is the size you want but rendered with great
resolution.
So how do you change the DPI (dots per inch; it ought to be pixels/cm, but
it isn't) setting?
In theory, the place is xorg.conf section "Monitor". But various other
things poke their fingers into this. See, for example, this thread:
http://www.webservertalk.com/message1491918.html
(The first one I looked at from googling for "xorg.conf DPI" -- there
might well be better.)
startx takes a DPI parameter, among other things.
I admit that I have not addressed your original question. The answer
depends on what gets run on your system when someone logs in. On some of
our systems, X gets run manually by an individual user (if she wants to)
after login. That makes the answer easy.
If you cannot use native resolution, the next best resolution (if your
monitor supports it) is quarter resolution. This would turn each pixel in
the window into four on the screen (2x2). It is likely be way to crude.
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