how do i force specific resolution AND refresh?

[ryoken]

just wondering how you can force (at boot?) a specific resolution and refresh rate when running X. whenever i load the cd, it defaults to 800x600 @ 60Hz, even though the monitor supports 1024x768@70Hz. How do I force it to go to start at 1024x768@70Hz? I have already tried noddc, screen=1024x768, and xvrefresh=70 all on the same line or individually at the boot prompt.

any suggestions would be much appreciated!

[RockMumbles]

What kind of video card are you using?

rock

[ryoken]

diamond stealth 64 video vram 2mb
also tried on friend's radeon 8500 and had same problems

BUT when i changed the monitor (im currently using very old monitor, but does support 1024x768 @ 70Hz) to a new one, it had no problems with supporting and using the specified monitor resolution and refresh at boot

something is very fishy here, i suspect X is trying to detect the monitor, and if it gets no feedback from it, it doesn't let you use more than 800x600@60Hz irrespective of whether your monitor supports anything higher (in-built safety mechanism?)...

hope this extra info helps!!!