Monitor using wrong display profile--how do I change it?

I recently bought two new monitors (same model) and have them connected to my Mac Pro--one with DVI and the other through a KVM switch using a VGA-DVI adapter. The problem is that the second one (connected through the KVM) displays in the wrong resolution. When I open the Displays preferences, it looks like it's using a profile from my previous monitor and the Display tab shows the wrong list of resolutions.
Is there a way to delete this old profile, or at least get the resolution list to display more options? The second monitor works fine when I connect it directly via DVI, but I'd like to keep using it with my old KVM switch if possible. (DVI KVM switches are too expensive!)

D.J. Ross wrote:
I recently bought two new monitors (same model) and have them connected to my Mac Pro--one with DVI and the other through a KVM switch using a VGA-DVI adapter. The problem is that the second one (connected through the KVM) displays in the wrong resolution. When I open the Displays preferences, it looks like it's using a profile from my previous monitor and the Display tab shows the wrong list of resolutions.
Is there a way to delete this old profile, or at least get the resolution list to display more options? The second monitor works fine when I connect it directly via DVI, but I'd like to keep using it with my old KVM switch if possible. (DVI KVM switches are too expensive!)
What happens if you click "detect displays"?
There is a display .plist which you can drag to the desktop and then log out and back in to reset.
It's
com.apple.preference.displays.001b63933178.plist
except that the number will be different.
It's in your local library/preferences directory.

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