Do the followings (using your keyboard when the system is running) ---:
Either
1) Ctrl + '-'
or
2) Ctrl + '+'
will change the screen resolution on the run time.
If you are sure of very hi-resolution and need the same to degrade for your H/w to work; use the second option (Ctrl + '+') and fire it 2-3 times and with each such command the resolution will degrade. For the other case use the 1st option (i.e. Ctrl + '-' to enhance resolution).
Had a similar problem once with FreeBSD 7.0 and the above worked there.
Let me know if the same worked out for you or not.
Last edited by praveen_218; 13th May 2008 at 10:25 AM.
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