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ThinkPad NotebooksThinkPad T400 / T500 and newer T series Laptops Knowledge Base

T420 - Unable to get max resolution of 2560x1600 via DisplayPort using Optimus video

Question

When connecting the laptop to an external monitor via DisplayPort, the maximum resolution available is only 2048x1536 on the Nvidia Control Panel.

Answer

--------------------------------------------------------------------------------
CHANGES IN THIS RELEASE
  Versions 8.17.12.7593  (NVIDIA Graphics Driver)
           1.2.23.3      (NVIDIA HD Audio Driver)
           8.15.10.2321  (Intel Graphics Driver)

[Important updates]
  Nothing.

[New functions or enhancements]
  Nothing.

[Problem fixes]
- Fixed an issue where the external monitor that was supported up to 2560x1600
  was only set up to 2048x1536.
- Fixed an issue where Internet Explorer 9 (IE 9) might crash while loading some
  web pages. 

 

--------------------------------------------------------------------------------

 

Windows 7 32bit -> Driver here

 

Windows 7 32bit -> Text here

 

Windows 7 64bit -> Driver here

 

Windows 7 64bit ->  Text here

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