Can not do primary external monitor on Portege M700 & Dynadock

It is impossible to make a screen Toshiba external 22 "the * primary * with the M700 Toshiba LCD screen as the * secondary * 'expanded '.
The external monitor is connected to the Dynadock DVI. Runing Win XP SP3.

The monitor works well as a display of volumes mirrored and extended with the M700 maintained as principal.
Externally also works very well as the primary _WITHOUT_ display M700.

When external is set as primary (and the M700 display is off), if I try to designate the internal display M700 such extended, the system reverts to the original with the M700 as main configuration and extended such externally.

Any ideas why it does not work with externally as a main and the only extended such M700 screen with the Dynadock?

Have you ever tried to test it, if you can define the secondary external primary and internal not using only not the dynadock?

I would also recommend reinstall display drivers and dynadock too.

Tags: Toshiba

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