dual monitor set up... one displays presentation correctly, the other does not refresh

[Joe Murphy]

I have a user with a laptop connected to an external Kensington port
replicator. The same signal is being sent to both the laptop and monitor.

When she is edits text in a PPT presentation, the laptop looks fine, but the
external monitor does not appear to refresh in a timely manner. I have to
move the mouse back and forth over the edited text for it to appear.

Montior settings appear to be fine. I'm leaning towards a printer driver
issue next since it is not rendering correctly on the screen, but it's just
the one external monitor not the laptop monitor itself.. Any thoughts?

Thanks,
JM

 

[Brian Lynn]

Are you using a VGA out on the port replicator? Or off the laptop itself?

"The same signal is being sent to both the laptop and monitor."

By this I am assuming you mean that you have your screen mirrored between
the laptop screen and the external connection???

There is many reasons the external device is not functioning properly... Try
new drivers? Unfortunately Kensington's website doesn't give much information
on how this device actually works. But its a single USB 2 to run the entire
thing, no lag is a claim, but how well it works in a real application is
questionable.

"Notebook Expansion Dock works with Flat Panel Monitors up to 19" at native
resolutions of 1280 & 1024 pixels"

This is a scary quote from Kensingtion, one that the reviewers of the device
have perpetuated. Does it really know its on a 19" monitor? Does this mean
that if I connect to a 32" plasma with a native res of 1280x1024 that this
device will say "OMG this is too big a screen, the res is correct, but too
many inches!!" and then shutdown on you??

Again, I am curious as to why the port replicator... what make/model laptop
is the client using?