[Openchrome-users] Xorg & 1440x900 WXGA

[John Robinson]

On 19/09/2006 22:38, Xavier Bachelot wrote:
> Ellington Santos wrote:
>> How can I know which Vfreq my LCD suports?
>>
> I'd say from its specs, but maybe it's also advertised from EDID/DDC. 
> Not familiar with the later, though.

EDID/DDC info ought to appear in your Xorg log as long as your monitor 
supports it and you don't have Option "NoDDC" in the Monitor section of 
your xorg.conf.

Occasionally the EDID info includes Modelines, or at least timings with 
which you can write a Modeline (Xorg tries to do just that with the 
info). In particular, on an Acer 19" widescreen 1440x900 panel, I've 
seen the timings/Modeline for a perfect 1440x900 picture on that panel.

Unfortunately what Xorg makes of EDID/DDC info sometimes doesn't work 
properly so you have to read the Xorg log, make notes, then change the 
Monitor section to have Option "NoDDC", the correct HorizSync and 
VertRefresh settings, and the Modelines.

Cheers,

John.