[ltp] T40p, external monitor, DDC

[Florian Weimer]

* Alex Deucher:

> if DDC is not available you'll need to set the monitor hsync and
> vrefresh ranges manually in the monitor section of your config file. 

These are ignored.  I receive a warning such as:

(WW) RADEON(0): Eizo: Using default hsync range of 28.00-33.00kHz
(WW) RADEON(0): Eizo: using default vrefresh range of 43.00-72.00Hz

And all the modes are logged and dropped.

But the "Eizo" monitor definition contains the following directives,
so it should work IMHO:

        HorizSync    31.5 - 120.0
        VertRefresh  50.0 - 100.0

(Okay, these are fantasy values, haven't found the time to look up
actual values yet.)