m16 R2, WD22TB4, external screens

Question

External Screens on M16 R2 i9

Hi peoples. I am currently running a Dell WD22TB4 dock with two 27" screens in addition to the laptop's screen. It seems that the external screens when run through the Thunderbolt port do not use the NVIDIA video card? But instead use the integrated video system. I read somewhere that only the internal screen and HDMI port is set to use the video card? Can anyone confirm that?

Also the main reason I am here is to see what external screen resolution the system will run, ie, will it run a 32:9 widescreen display? Looking at replacing the current setup with a single 49" widescreen but can not find anything anywhere on the max resolution. The screen I am looking at is just a cheap one, 32:9 1080. I am not using it for gaming etc, just an office PC that has bucket loads of tabs and windows running at once. But I don't want to buy it then find it won't work. Have google heaps but can't find anything!

AndAroundWeGo · Accepted Answer

I ended up not getting the cheap one, went for the Samsung DQHD 49in 5,120 x 1,440.

Insane... Love it. Works perfectly.

Plugged into the HDMI port it runs off the NVIDIA 4070 GPU whereas the dual monitors running through a thunderbolt dock were on the internal GPU.

Marcos_T · Answer

Hi there,

I’m running into similar issues. For the first time, I’m trying to set up my desk with my monitor (LG Ergo IPS 4K), which was previously connected to my desktop PC. I know this monitor supports 60 FPS, but when I connect it to the M16, the experience is unbearable; fps drops all over the place. As a video editor, this is not acceptable.

The NVIDIA Control Panel is stuck in Optimus mode (the other options are grayed out), and while I can see that graphic tasks are shared between the internal and dedicated GPUs, it’s clear the computer is cutting corners, delivering terrible image quality on the second monitor.

By the way, I have the 4070 GTX/i9 version of the M16.

Any hints or recommendations are welcome!

AndAroundWeGo · Answer

@Marcos_T​ I discovered that the thunderbolt port is hardwired to the internal Intel graphics card for some weird reason. The other USBC and HDMI ports are both wired to the NVIDIA card.  I now have the charging dock connected to the Thunderbolt port providing charge and external USB connections, the Samsung 49in widescreen display on the other USBC port with a Logitech Camera/mic connected to the screen. All works perfectly now with the new screen running DQHD

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m16 R2, WD22TB4, external screens

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