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07-19-2021

United States of America

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How to connect 2 external monitors to the Lenovo ThinkPad T15.

2021-07-19, 18:29 PM

Hello, 

I have an HDMI and USB-C monitor. I can have them both plugged in and working individually but when both monitors are plugged in only one works at a time. I have tried lowering the resolution on all monitors, updating all drivers using the Lenovo tool and operating system.

Assistance would be appreciated, thank you.

 

Edit - Another user just reported the same issue on the same exact Lenovo model laptop.

 

Moderator comment: Moved to the proper forum. (NateS)

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5531 Posts

08-02-2018

Philippines

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Re:How to connect 2 external monitors to the Lenovo ThinkPad T15.

2021-07-19, 21:32 PM


Hi mattjelly!


Welcome to community forums

 


What are the resolution and refresh rates on both monitors?


Just to make sure, are you referring to the Thinkpad T15 Gen 1 20S6? If yes, it can support up to  2 external monitors via HDMI (up to 4096 x 2160 @24Hz), USB-C (up to 4096 x 2304 @60Hz), or Thunderbolt™ (up to 4096 x 2304 @60Hz)

 

You can refer to this product spreadsheet; https://psref.lenovo.com/Product/ThinkPad/ThinkPad_T15_Gen_1

 

 

Jwes_Lenovo



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2 Posts

07-19-2021

United States of America

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25 Page Views

  • Posts: 2
  • Registered: ‎07-19-2021
  • Location: United States of America
  • Views: 25
  • Message 3 of 4

Re:How to connect 2 external monitors to the Lenovo ThinkPad T15.

2021-07-20, 11:29 AM

I'm not sure which monitor is plugged in using which cable but I will find out. The monitors appears in the Advanced display settings as - 

 

Internal monitor is as follows:

Display 1: LG IPS FULLHD
Desktop resolution: 1024 x 768

Active signal resolution: 1920 x 1080

Refresh rate: 50.000Hz

 

External monitors below:

Display 2: LG IPS FULLHD
Desktop resolution: 1024 x 768

Active signal resolution: 1920 x 1080

Refresh rate: 50.000Hz

 

Display 2: S24D300

Desktop resolution: 1024 x 768

Active signal resolution: 1920 x 1080

Refresh rate: 50.000Hz

 

Computer specs below:

Manufacturer: LENOVO
Model: 20S6000XUS
I believe I am referring to the ThinkPad T15 Gen1 20S6.
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5531 Posts

08-02-2018

Philippines

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  • Posts: 5531
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Re:How to connect 2 external monitors to the Lenovo ThinkPad T15.

2021-07-20, 22:08 PM

For the T15 (type 20S6, 20S7) Laptop (ThinkPad) - Type 20S6 - Model 20S6000XUS, you can try to trace it setting one monitor at a time.

 

Checking with the user guide here on page 5 shows an option for connecting the two other external monitors
https://download.lenovo.com/pccbbs/mobiles_pdf/t14_t15_p14s_p15s_ug_en.pdf?linkTrack=PSP:ProductInfo:UserGuide


6. USB-C 3.2 Gen 2 / Thunderbolt 3
9. HDMI 1.4b
 
 
 
 
Jwes_Lenovo



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