ubuntu 13.10 secondary monitor - doesn't redraw properly
Solution 1:
I experienced exactly same behaviour on external monitor (connected through DVI or DisplayPort) when I booted Ubuntu 13.10 from USB stick.
I might have found workaround that solves redrawing problem.
My system: Lenovo T430 with 2 graphic cards (Integrated Intel and additional Nvidia).
Workaround: Go to the BIOS setup, in Graphics setup choose Discrete graphics. Redrawing problem occured only when there was Nvidia Optimus mode active.