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Lenovo Staff
Views: 2,218

Symptoms

Optimus graphics. Depending upon what combination of display devices are being used, Optimus may use two different video adapters: integrated Intel graphics and discrete NVIDIA graphics. Because two different graphics adapters may be in use, Windows 7 may not be able to correctly set up Clone Mode.


AFFECTED CONFIGURATIONS:

Any of the following systems with NVIDIA Optimus graphics, running Windows 7, where the machine is set in BIOS to run in Optimus mode:

 

ThinkPad L430
ThinkPad T420, T420i, T420s, T420si
ThinkPad T430, T430i, T430s, T430si, T430u
ThinkPad T520, T520i
ThinkPad T530, T530i
ThinkPad W520, W530

Diagnosis

The following shows what display ports are controlled by the different display adapters.  If the display configuration you are using involves both the Intel and NVIDIA graphics adapters, Fn + F7 will not work correctly.

 

ThinkPad T420, T420i, T420s, T420si, T520, T520i:

  • NVIDIA NVS 4200M 

- Computer's DisplayPort connector 
- Docking Station's DVI connector(s) or DisplayPort connector(s) 

 

  • Intel HD Graphics Family 

- (Computer's LCD)
- Computer's analog VGA connector
- Docking Station's analog VGA connector


ThinkPad W520:

  • NVIDIA Quadro 1000M or NVIDIA Quadro 2000M 

- Computer's analog VGA connector 

- Docking Station's analog VGA connector
- Computer's DisplayPort connector
- Docking Station's DVI connector(s) or DisplayPort connector(s)

  • Intel HD Graphics Family 

(Computer's LCD)

Solution

Clone Mode in Optimus using two graphics adapters is only supported and configured through the NVIDIA Control Panel.  It cannot be enabled by using the Windows display control (Fn + F7) or the Intel display control panel.

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