"Input out of Range"

[Beartooth]

	I normally run three or four computers behind a 4-way KVM switch; 
one of them is an old Dell PowerEdge SC1420, which began life as a 
server, configured with RAID of some sort. It has long since been re-
purposed and re-configured, and is now an ordinary old PC. I ran CentOS 6 
on it for years, but recently installed F 20 instead. 

	When I boot it, the HP w2207h widescreen flat panel monitor gives 
me a message saying "Input out of Range" and tells me to reset to 
1680x1050. I can ssh in -- but what little I recall of such efforts years 
ago, when the monitor was new, is no help; and I can't seem to find the 
setting I need to change.

	When I've had this problem in recent years, I could shut 
everything down, swap cables around like a crazed beaver, ending up with 
the Dell, and only the Dell, connected to the peripherals -- directly 
connected, without the KVM switch between -- and simply reboot. 

	Either CentOS or earlier releases of Fedora would find the 
monitor, change the setting, and be fine. That now fails. 

	What file do I need to get into to tell the machine 1680x1050??

	When I do once get into that file, do I simply find lines that 
look similar to 1680x1050 and change them? Or is something fancier going 
on??

-- 
Beartooth Staffwright, Not Quite Clueless Power User
Remember I know little (precious little!) of where up is.