[gentoo-user] How to get KMS to set the screen resolution to that of the external monitor attached to the laptop.

[ubiquitous1980]

Is there a way to get KMS to set the resolution to 1680 x 1050 so that I
have more real estate on my external monitor.  At present, the external
monitor is not getting full use with parts of it blacked out to make the
resolution of the laptop's screen.

Thanks,

Damien