I have installed a plugable USB 2.0 UGA multi-display adapter on a HP Compaq 8200 Elite system, with two Hewlett Packard L1750 monitors, except for one issue: When I rotate the image on the screen so that a document can be edited in portrait mode, the rotation reverts back to landscape mode after about 5 seconds.
All of the latest drivers have been installed for the HP, and I have installed the HP software to rotate the image. I have tried to rotate using the HP software and using the Intel software. I have tried to rotate with the monitor in both landscape and portrait modes.
What can I do to keep the portrait orientation?