Dell C400 has extra monitor

I have W7 premium installed on my Dell. Using instructions found elsewhere I loaded the Fujitsu drivers and have a worl 1024x768 display. The only problem is if I hibernate the PC, when it wakes up it thinks the display is spread over two monitor the digital flat panel on Intel 8230M graphics controller and a default monitor. Sometimes I can change the screen resolution to not use the second monitor but most time I have just restart. I never have this problem after a start/restart. How to fix?

I found that if you select "switch user" it resets the display settings without restarting