On Sun, Aug 24, 2003 at 11:16:23PM +0200, Alexander Pohoyda wrote: >David Dawes <[EMAIL PROTECTED]> writes: > >> >> >> Xinerama *hides* the fact that there are two heads, so there is no >> >> >> way for the app to be told a different DPI debending which head it is >> >> >> currently on - what should it be told if it is on both ? >> >> > >> >> >This is my point exactly. When I raised this issue it was not to elicit a >> >> >"correct" solution, but rather to point out that the whole notion of DPI is >> >> >nonsense WRT Xinerama/MergedFB. I would suggest this as a "correct-ish" >> >> >solution: If Xinerama/MergedFB detects that both screens have nearly the >> >> >same resolution (to within some configurable tolerance) then use the >> >> >average of the two. Otherwise the user has to specify the DPI to use with >> >> >the -dpi command line switch or some other mechanism. (Is there a DPI >> >> >option in the XF86Config file?) It might be nice to be able to specify >> >> >"use DPI from screen foo" in the ServerLayout section to simplify the >> >> >process a bit. >> >> >> >> There is no DPI option in the XF86Config file, but one could be added. >> > >> >That's true, but we have DisplaySize property in the Monitor section. >> >> The -dpi command line option is global, applying to all screens. > >I see. Is it updated in the Xserver manual page? >I have the old version which goes like this: > -dpi resolution > sets the resolution of the screen, in dots per > inch. To be used when the server cannot determine > the screen size from the hardware.
I don't see how that description is inconsistent with what I said. Maybe knowing how it works influences the way I read the description? David -- David Dawes Founder/committer/developer The XFree86 Project www.XFree86.org/~dawes _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
