Am 17.09.2016 um 19:05 schrieb David McSpadden:
Can not get second monitor to actually extend. All I get is a cloned
Can be a hardware problem. Yes, really.
Recently had same problem with a high end graphics card.
Tried all available drivers, nothing helped.
Finally swapped the card with an identical one, and it worked!
Then put the 1st card in the 2nd machine, and it failed there as well.
Turned out to be a known problem. Got the card replaced, now all
machines can extend the desktop to both monitors.