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Problems with eGPU and monitor setup - Ubuntu 18.04
 

Problems with eGPU and monitor setup - Ubuntu 18.04  

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WouterJMW
(@wouterjmw)
New Member
Joined: 1 month ago
 

So I have a Dell XPS laptop with an internal GTX 1050. Now I want to use an Razer Core X with a GTX 1080ti. I am using driver 430.34. Running Ubuntu 18.04. Using

nvidia-smi

it detects both GPUs just fine. The problem comes from trying to get an additional monitor working besides my laptop's own screen. I used eGPU switcher ( https://github.com/hertg/egpu-switcher) as well as writing my own xorg configuration file but the best I got was that the second monitor (connected to 1080ti on eGPU) worked, but that my laptop monitor no longer got detected or worked. Any suggestions or tips?

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


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(@neil_horning)
New Member
Joined: 2 years ago
 

I fixed a similar issue on my system today with a one line change in a config file. This is copied from my askubuntu response here:
https://askubuntu.com/questions/1033785/external-monitor-not-detected-on-ubuntu-18-04/1165791#1165791

Run X11 as root. The one line fix is to add this to this to /etc/X11/Xwrapper.config:
needs_root_rights = yes

Found Here:

https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1716857

All my external displays are now detected and working on gdm3

My System:

Ubuntu 18.04.3 LTS

Lenovo T480

Intel® Core™ i7-8650U CPU @ 1.90GHz × 8

GeForce GTX 1070 Ti/PCIe/SSE2 via Razer Core X over Thunderbolt 3

GNOME 3.28.2

This post was modified 6 days ago

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


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