Titan XP not detected as egpu on ubuntu 18.04

I’m trying to connect a Titan XP to my laptop running ubuntu 18.04. My goal is to have 2 gpus available in a docker-compose/k8s cluster because I need to run a setup that includes 2 containers that require GPU/CUDA.

I connected the egpu via usb-c, updated my nvidia drivers to 418, and rebooted, but when I run nvidia-smi I don’t see the second gpu.

Are there any step-by-step instructions for getting a set up like this to work on ubuntu 18.04?

Here’s the output from nvidia-smi (it sees my internal 1070 but not the egpu):

Tue Apr  9 23:27:27 2019       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.43       Driver Version: 418.43       CUDA Version: 10.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 107...  On   | 00000000:01:00.0 Off |                  N/A |
| N/A   42C    P8     6W /  N/A |      2MiB /  8119MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID   Type   Process name                             Usage      |
|=============================================================================|
|  No running processes found                                                 |
+-----------------------------------------------------------------------------+

I also ran nvidia-bug-report.sh, but doesn’t seem like I can attach files here? I uploaded the output to google drive here:

Any help with this greatly appreciated.

–Larry

See this:
https://devtalk.nvidia.com/default/topic/1048095/linux/rtx-2070/1
https://devtalk.nvidia.com/default/topic/1048769/linux/black-screen-when-using-egpu-output-with-dell-xps-igpu-dgpu-/1