No display from monitor plugged into eGPU
 
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[Solved] No display from monitor plugged into eGPU  

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p_raay
(@p_raay)
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Joined: 2 months ago
 

Razer Core X enclosure detected and authorised in the thunderbolt settings.
The eGPU seems to be working -

$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Iris Pro Graphics 580 (rev 09)
09:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)

I've applied the udev rules as mentioned here: https://goneri.lebouder.net/2021/02/12/egpu-wayland-and-fedora-33/

cat /etc/udev/rules.d/61-mutter-primary-gpu.rules
ENV{DEVNAME}=="/dev/dri/card1", TAG+="mutter-device-preferred-primary"

I don't have another machine with Windows (and thunderbolt) to check that the graphics card is working, but based on the output above I assume it's ok.

In dmesg there's a lot of repeated errors of this nature:

i915 0000:00:02.0: cannot be used for peer-to-peer DMA as the client and provider (0000:09:00.0) do not share an upstream bridge or whitelisted host bridge

so I wonder if I need to disable the i915 module altogether?

This topic was modified 2 months ago

Skull Canyon NUC6i7KYK TB3->AMD Radeon RX 570 inside a Razer Core X enclosure
Linux Fedora 33, Wayland, Gnome 3.38.4


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p_raay
(@p_raay)
New Member
Joined: 2 months ago
 

Marking this as solved, although not entirely sure how.

I downloaded PopOS and ran that from a usb stick to see if I had any more luck there, and the monitor worked fine from that. So I figured that it must be because it uses X11 still and fedora is on Wayland. So I logged back into Fedora to test out different X11 options but when I did I found everything was working perfectly. 

So not sure what did it, but it's working now and I'm happy!

Skull Canyon NUC6i7KYK TB3->AMD Radeon RX 570 inside a Razer Core X enclosure
Linux Fedora 33, Wayland, Gnome 3.38.4


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