tip for console mode "out of range" error

[mmix]

when you switch console mode to install nvidia driver,
monitor says "out of range" with empty screen, then try this.

change screen resolution to 800x600.

if it works, try next command to exit xorg.

# /etc/init.d/xdm stop

TIA

it works fine with my monitor sabayon 10, nvidia 304.51 & gcc-4.7.2