Dual monitor defaults to duplex when picking extended.

Hi,

I'm using a laptop (HP EliteBook 8560p with ATI gfx) at work with windows 7 enterprise (32bit).

I used this in the past with a beamer and had no problem extending my desktop so that I can have one program open on the beamer and another one on my laptop screen to take notes of meetings.

However recently I have gotten myself also a second monitor connected to the docking station and then the problems started. Since then I can't extend my desktop anymore to a second monitor or beamer. When I pick the extend option it reverts automaticly to duplex mode. With the newer beamers here at work there isn't a problem as they can handle the same resolution as my laptopscreen. However with the second monitor this isn't the case and is starting to annoy me a bit.

I already contacted our company technical support team (HP itself) with this problem. They logged in with an admin account and there wasn't any problem setting it up. It even stayed after relogging back to my own account.

However next time when I had took the laptop out of the dockingstation and put it back in, the problem started all over again. My support helpdesk is also trying to find a solution but seems unable to solve the issue.

So I was wondering if anyone here has encountered the same problem and could provide a solution to how fix this

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