Undocking from ThinkPad Advanced Dock with a PCI express video card causes a blank screen on LCD

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Undocking from ThinkPad Advanced Dock with a PCI express video card causes a blank screen on LCD - Notebooks

Symptom

After docking system to a ThinkPad Advanced Dock with a PCI Express video card which video driver is not same as the video driver of internal graphics controller, attach an external monitor to the dock, and change the "Default Primary Video Device" settings from "Internal" to "PCI Express" in BIOS, the display appears on the external monitor after restart. Then undock and find that the display disappears from the external monitor, but does not appear on internal LCD, the LCD screen is blank.

Affected configurations

All notebook systems running Microsoft Windows Vista.

Solution

You must restart the system.

Additional information

This is a limitation of Windows Vista.

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Country Availability
Available	Worldwide

Document ID : HT001518
Legacy Document ID : MIGR-67188
Last Updated :

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