[CentOS] Ignoring DDC settings on Xorg

Sun Jan 14 18:10:00 UTC 2007
first last <prelude_2_murder at yahoo.co.uk>

I am trying to set up a new 1400x900 widescreen monitor, but I just
cannot get it to work correctly. The closest I get is 1400x900, which
causes lots of vertical blur bands.

I have tried with two different machines with i945 and ATi cards,
running CentOS 4 and Ubuntu, always with the same result.

My investigations indicate that the monitor reports itself to be
"1440x900". It also supports 1600x1200 by squashing the pixels
together, so it also advertises support for that resolution, which
messes things up.

According to the documentation I have seen online, disabling DDC (using
NoDDC and DCC "off") and setting the correct modeline should work, but
it always reverts to 1440x900 (if I am lucky).

Any ideas on how to force it to the right resolution? It really is
driving me nuts not being able to use the monitor to the native



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