> setenv output-device screen:r1024x768x75
>
> but the monitor still tells me 'Out Of Range'.

Try "setenv output-device screen:r1024x768x66" to get a decent
picture to start with, then increase the frequency until it doesn't
work any more.

To find the actual values you can use with your card, cd to the
pci bus directory entry in the OBP for the card, then type "words".
You'll see the values encoded in forth words.


HTH -- Volker
-- 
------------------------------------------------------------------------
Volker A. Brandt                  Consulting and Support for Sun Solaris
Brandt & Brandt Computer GmbH              WWW: http://www.bb-c.de/~vab/
Meckenheim, Germany                                   Email: vab@bb-c.de