Hybrid intel nvidia laptop with two 4k monitors

Hi, I was hoping someone here could help me. I have a laptop (hp spectre 360 15"). It has intel gpu on board the motherboard, and a geforce mx150 card. I am running ubuntu 19.04. I have a laptop dock (cable matters thunderbolt 3 dock) that attaches via thunderbolt and has 1 hdmi out and 1 usb-c out ( for monitor ). Each of my monitors work separately but I can’t get the system to use both of them. When I run xrandr I see both monitors but only one says it’s connected.
I don’t know where the problem is. I’d be happy to provide any diagnostic material. I just don’t know many commands.
Thank you
nvidia-bug-report.log.gz (1.03 MB)
nvidia-bug-report.log.gz (1.03 MB)

What model is the dock?
Please run nvidia-bug-report.sh as root and attach the resulting .gz file to your post. Hovering the mouse over an existing post of yours will reveal a paperclip icon.

It doesn’t have a model that I can tell. It is just referenced by Cable Matters Thunderbolt 3 dock. Full description is
DUAL 4K @ 60Hz DISPLAYS compatible with an HDMI port and a Thunderbolt 3 port using an active USB-C to video adapter; Connect a USB-C video adapter to the 2nd Thunderbolt 3 port for dual displays; Thunderbolt 3 Docking Station for Mac and Windows computers
Here’s the report
Thanks for you help
I did prime-select nvidia, but I have not rebooted yet. I’m chatting wtih tech support. I’ll reboot and re run and repost in a few.

Jeez that’s a ton of data. Thank god for grep I guess. The second file is after the reboot. Hopefully something in there can help us figure this out.

Sorry, no dice:
Some Thunderbolt 3 enabled computers such as […] HP Spectre x360 do not support a second display via Thunderbolt 3

Crapolla! That sucks because the spectre is supposed to support up to 3 external monitors. Damn. I’m impressed you found that in their docs. Thank you. I was looking for linux but didn’t think to look for my laptop. I guess it’s back to the drawing board.