aha!

turns out the solution is not in krandr but in the monitor kde settings. 
wherein one may drag one monitor atop the other, establish which is the 
primary, and so on. now, according to krandr, i am running a monitor at 
1920x2280. which is pretty cool, though the moon on my desktop is now 
enormous and cut in two. but, hey, if that's the worst that ever 
happens . . .

which i report in case it's of use to anybody else. i personally think it 
is tremendously cool.
-- 
dep

The shortest distance between you and playing great acoustic guitar:
the great new instructional DVDs from Marjorie Thompson, 
available at www.MarjorieThompson.com