Hi there,
I have a similar problem with a E6430 and a Dell P2212H monitor.
When I plug it first to the docking station and then start the computer (lid closed), the screen (P2212H) seems to start correctly and then freezes with diagonal lines.
When I open the lid and then start the computer (plugged to the docking station), the screen of the computer displays correctly, and the P2212H isn't recognized at all.
When I take the computer off from the docking station and start it with the screen plugged directly to the computer, it is not recognized either.
When I plug another computer to the docking (E5430), it's working well.
I tried to install the driver from the CD. Here is the message:
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The following connected monitors have been detected:
AU0 Plug and Play Monitor - AU0193C
Grivers for the following monitors have been found:
Dell P2212H (Analog) - DELA07F
Dell P2212H (Digital) - DELA07F
Drivers for the following connected monitor can be installed:
None
Please connect your monitor before using this program.
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The monitor is connected.
Does anybody have idea about this issue?