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09-07-2020

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Dual Screen Setup @ 2560x1440 How To ? with T480s and ThinkPad USB-C Dock Gen 2 (40AS) ??

2020-09-07, 23:55 PM

I want to get 2560x1440 on both monitors:

 

 

Setup:

Monitors: 2 x ThinkVision P27q-20 Flat Panel Monitor - Type 61EA

Laptop:     T480s

Dock:        ThinkPad USB-C Dock Gen 2 (40AS)

 

All running latest drivers and firmware:

 

From the docks user manual: 

 

The following video resolutions are based on the ThinkPad system's video performance.

  • ThinkPad DisplayPort 1.4 systems
  • ThinkPad DisplayPort 1.2 systems

 

How do i find out what the Video Resolutions is ? as with ThinkPad DisplayPort 1.2 USB-C systems max it says is two video outputs at 1920 x 1080 which is what i am getting... i want to know if i can get Video Resolutions with ThinkPad DisplayPort 1.4 USB-C systems (Intel platform): which has this remark: Supported by P53, P73, P1 Gen2 which support DisplayPort1.4 ??

 

 

 

ThinkPad USB-C Dock Gen 2 (40AS)

https://support.lenovo.com/us/zh/solutions/pd029622#USB-C%20dock

 

 

 

Supported resolution 

Depending on the USB-C connector or Thunderbolt 3 connector on your computer, the dock supports the following display resolutions: 

 

• If the USB-C connector or Thunderbolt 3 connector supports DisplayPort 1.4,

– One video output connector: up to 3840 x 2160 pixels / 60 Hz

– Two video output connectors: up to 3840 x 2160 pixels / 30 Hz 

– Three video output connectors: up to 1920 x 1080 pixels / 60 Hz 

 

• If the USB-C connector or Thunderbolt 3 connector supports DisplayPort 1.2

– One video output connector: up to 3840 x 2160 pixels / 30 Hz 

– Two video output connectors: up to 1920 x 1080 pixels / 60 Hz

 

 

Any help would be great :) 

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2 Posts

09-07-2020

AU

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  • Posts: 2
  • Registered: ‎09-07-2020
  • Location: AU
  • Views: 0
  • Message 2 of 2

Dual Screen Setup @ 2560x1440 How To ? with T480s and ThinkPad USB-C Dock Gen 2 (40AS) ??

2020-09-08, 0:27 AM
Appears the problem is the Dock, it dows not support DisplayPort 1.4, only DisplayPort 1.2, thus i can only get 1920 x 1080 pixels across both monitors... Need to purchase: ThinkPad Thunderbolt 3 Dock Gen 2

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