Input signal out of range

[Beartooth]

	I have F20/Xfce4 installed, more or less successfully I *think* 
on an old Dell SC1420 Poweredge. (This machine was built as a server, and 
served in that capacity for some years; then I passed to me, and I had a 
hardware-savvy friend do whatever changed it from the lockstep backup of 
one drive on the other to an ordinary configuration without that security 
but with twice the storage.) I have run maybe half a dozen Fedora 
releases on it, without any monitor trouble.

	The PC is so old that the media drive takes only CDs, and not 
DVDs; but when the zodiac of the matter aligns just right, I can use a 
net install CD to get it to read an external USB drive with an install 
DVD in it. In case it matters, I did that in the present instance. 

	Also it  sits behind a KVM switch.

	Today it tells me it can't see my HP w2207h 22" 1680x1050 flat 
panel monitor. Yesterday, when it said that, I tried again, logging in as 
root instead of user -- and it worked. Today neither works; but I can at 
least still ssh to it from another PC on my LAN. Otoh, telling it xrandr 
as root fails.

	Time was, back in the days of single-digit Fedora releases, when 
every fresh install meant shutting down all the machines behind the KVM 
switch, and hooking the one being installed to directly to all the 
peripherals. I have a sneakin' hunch that would work now -- and, now that 
I have a laptop and a tablet, not cut me off from the Net.

	But it would still be a great hassle, and a needless one if the 
problem could be fixed by adding 1680x1050 into some xorg file. If I 
could tell in advance *what* file. Anybody know offhand? Mousing around /
etc/X11 isn't getting me anywhere that I can understand.

	Or is the lesser evil just to shut everything down, and try the 
old way?

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