Re: display-mm-width return value off on Windows

[Jan Djärv]

Jason Rumney skrev:
> Lennart Borgman <address@hidden> writes:
>
> > Is there any reason to believe the result should be correct? As I
> > pointed out in a previous message the information does not seem to be
> > available to the display driver.
>
> Built in LCDs in notebooks and LCD panels connected via digital
> connectors are able to report details about the monitor back to the
> video drivers/OS, though I am not sure whether manufacturers always
> report accurate information, or whether Windows uses the information.
>
> Monitors connected via analog connectors are not able to report this
> information, and Windows seems to always guess 320 as the width, and
> the height is reported as consistent with the width:height ratio
> assuming square pixels.

Monitors with analog connectors can report EDID, but I don't know if 
width/height is in EDID.  My analog connected monitor reports incorrect EDID 
all the time (i.e. wrong hsync freq).

        Jan D.