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Dedicated GPU not driving external monitor - Spectre Vega 15t-ch000

HP Spectre 15t Vega
Microsoft Windows 10 (64-bit)

I have an HP Spectre 15t with the AMD Vega dedicated graphics card. I am trying to connect it to an external monitor (HP Z38c) and when clicking on Display Settings it is showing that the monitor is being driven by Intel Integrated Graphics 630 0 which is the on-board card. I would like the monitor to be driven by the Vega card only. 


I looked in BIOS to try to change this but can't figure it out. I have tried usb-c direct between the laptop and monitor, and also through a HP Thunderbolt Dock G2 120W with DisplayPort. 


What else do I need to try?

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Dedicated GPU not driving external monitor - Spectre Vega 15t-ch000



Welcome to the HP Support Community!


I reviewed your post and I understand that the monitor is not using the dedicated GPU.


Don’t worry, I assure you I will try my best to get this sorted.


Typically with laptops with AMD GPU, it uses switchable graphics, which automatically switches over to the AMD GPU when it is necessary, such as when you run a game or run a photo or video editing software.

But you can try the following to force it to use AMD all the time (note: this can cause your laptop battery to get drained a bit faster when it always uses the dedicated GPU).

  • Go into the AMD control panel
  • Go to Power
  • Inside global settings, scroll down to power mode and change it to performance.
  • Apply changes.

Please refer to the below article for more information on switchable graphics.


Let me know how it goes and you have a great day!


If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!




I am an HP Employee

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