Using internal screen with Dell XPS 15 and Vega 64 eGPU
 
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Using internal screen with Dell XPS 15 and Vega 64 eGPU  

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jya
 jya
(@jya)
Trusted Member
Joined: 2 years ago
 

Hi.

I have a Dell XPS 15 9560 laptop, it has an Intel IGP and a nVidia 1050 dGPU.

Using a Sonnet Breakaway and a nvidia 1080Ti I can use the eGPU with the internal screen (after disabling the GT1050 and installing desktop drivers)

With the AMD Vega 64 in the Sonnet however, I can only get Steam to use the eGPU if I disable the internal screen and use an external display.

It's not a very convenient setup as I'd like to have a "portable" setup to use the Dell with a Vive headset.

Is it possible?

 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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heli
 heli
(@heli)
New Member
Joined: 2 years ago
 

Sorry not answering your question but having a question of my own:

HOW did you manage to make it run stuff with internal screen and eGPU???

I have an Aorus Gaming Box with 1070 inside, and honestly have tried everything from disabling dGPU (both just the dGPU and the pci port directly) to clean installs with various drivers (both iGPU/dGPU and eGPU) to no mean. The only way I managed to make stuff run on the eGPU was using external displays. Does steam allow you to do that?

Please teach me how you did it.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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Sky11
(@sky11)
Reputable Member
Joined: 3 years ago
 

@jya - your configuration is officially supported one.  So here are general rules:

- Best performance: connect display to Vega64, make it extended desktop, and set Vega-driven display as primary desktop. Kill and restart your apps, then everything will run on eGPU

- If you want to use eGPU to accelerate apps on the laptop screen: disable NVIDIA in the Device Manager, then connect Vega10 eGPU. This way you will get Hybrid Graphics

- Make sure your application is running on eGPU: right click on XConnect tray icon, and check if your game or app is listed there as running on eGPU (while the app is actually running). If the app is running (even black screen, etc.), but not listed as a running on eGPU app, then we have a problem - your apps is not running on Vega! To fix that (and this only applies to the case when internal NVIDIA is disabled), open Radeon Settings -> System -> Switchable Graphics and then on that page find your app and ensure that it is set to run "High Performance'

Now for case: you are trying to use VR headset - Vive, correct? and the only way you can get it to work if you have another display attached to eGPU?

 

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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jya
 jya
(@jya)
Trusted Member
Joined: 2 years ago
 
Posted by: heli

Sorry not answering your question but having a question of my own:

HOW did you manage to make it run stuff with internal screen and eGPU???

I have an Aorus Gaming Box with 1070 inside, and honestly have tried everything from disabling dGPU (both just the dGPU and the pci port directly) to clean installs with various drivers (both iGPU/dGPU and eGPU) to no mean. The only way I managed to make stuff run on the eGPU was using external displays. Does steam allow you to do that?

Please teach me how you did it.

I followed the instructions on Sonnet Web sites: disable internal 1050, uninstall nvidia drivers, Install nvidia desktop drivers. Reboot. Upon reboot it was using the 1080Ti, and SteamVR performance test showed that the system exceeded all their requirements.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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jya
 jya
(@jya)
Trusted Member
Joined: 2 years ago
 

Sky11: I have disabled the internal nvidia 1050. Only when I disabled the internal screen, did X connect show that steam was running on it.

Otherwise it always used the Intel IGP, and that's even when I make the SteamVR run on the external display.

I'll try again, this time rebooting after setting the external display (connected on the egpu) as primary display. I had only restarted steam last time, maybe that was the reason.

Pending: Add my system information and expected eGPU configuration to my signature to give context to my posts


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