GUIDE How to check Laptop HDMI and other Display Output Ports connection

EliteMacx86

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How to check Laptop HDMI and other Display Output Ports connection

An EliteMacx86 Exclusive Guide - This guide covers finding of external display ports connection for the GPU tied to.

Overview


Normally, on Laptops, the internal screen is connected to the IGPU and the other ports such as HDMI, mDP, DP or VGA are also connected to IGPU. However, the new Laptops are having a different scenario. Where, the internal screen is connected to the IGPU and the other ports are connected to NVIDIA/AMD, which is a DGPU.

When driving display from the external ports, you may not be able to drive the display if the ports are connected to NVIDIA/AMD and you've disabled it via DSDT, SSDT or boot arg. So, before you start to patch the framebuffers for HDMI, Type-C Display, it's a good idea to find the ports whether they're connected to IGPU or NVIDIA/AMD or you'll end up in scratching your head.

Find the Connection


To find out the connection, or the ports tied to, you'll ned a copy of Windows 10 installed along with the drivers.

Right click on your Desktop
Click on Display Settings
Click on Advanced Display Settings
Connect your external monitor for the respective port you want to find the connection.
Select the Monitor model from the list.
In the connection type, you'll find whether it's tied to IGPU/NVIDIA/AMD.
 
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