Macbook + Ubuntu 18.04 + eGPU = Glitchy Screen
 
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Macbook + Ubuntu 18.04 + eGPU = Glitchy Screen  

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letmesee123
(@letmesee123)
Active Member
Joined: 2 weeks ago
 

Hey guys!

After 3 excruciating days, I turn to you wise ninjas to try and help me see if my Linux endeavors are doomed or not.

 

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Build details:

OS: elementaryOS Hera (Ubuntu 18.04)

Rig: Macbook Pro Late 2019 15"

eGPU: Razer Core X Chroma + AMD Radeon RX 5700XT

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I've authorized my Thunderbolt connections and ran this beautiful script by hertg. When I boot with my Core X disconnected, everything boots up fine (though naturally only the laptop screen shows anything). When I boot with my Core X connected, I get errors on my laptop screen and random glitchy colors on my external monitor. Attaching photos for reference.

 

The errors are:

[10.427952] gspca_vc032x: reg_r err -32

[13.394567] xhci_hcd 0000:7d:00.0: xHCI host controller not responding, assume dead

[13.394593] xhci_hcd 0000:7d:00.0: HC died: cleaning up

[27.714685] thunderbolt 0000:7c:00.0: failed to find parent switch for 101

Anyone have any idea what's going on here? Anyone ever run into anything similar before?

 

Thank you very much in advance!

 

Images:

https://ibb.co/vVP65fG
https://ibb.co/G7drM5p  

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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Emil Rodrigez
(@emil_rodrigez)
New Member
Joined: 1 week ago
 

I didn't come across it. But I think it would be better if you brought the laptop into the service center.

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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nu_ninja
(@nu_ninja)
Reputable Member
Joined: 3 years ago
 

Does it work in macOS? If the eGPU works under macOS then its probably not a hardware issue.

Correct me if things have changed, but I thought installing linux on macs with the T2 chip was not straight forward? I don't have a T2 mac, but I had assumed from what I read that egpus were not working yet.

Mid-2012 13" Macbook Pro (MacBookPro9,2) TB1 -> RX 460/560 (AKiTiO Node/Thunder2)
+ macOS 10.15+Win10 + Linux Mint 19.1

 
2012 13" MacBook Pro [3rd,2C,M] + RX 460 @ 10Gbps-TB1 (AKiTiO Thunder2) + macOS 10.14.4 [build link]  


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letmesee123
(@letmesee123)
Active Member
Joined: 2 weeks ago
 
Posted by: @nu_ninja

Does it work in macOS? If the eGPU works under macOS then its probably not a hardware issue.

Correct me if things have changed, but I thought installing linux on macs with the T2 chip was not straight forward? I don't have a T2 mac, but I had assumed from what I read that egpus were not working yet.

Hey! Sorry for the late reply. It does work under both macOS and Windows. Installing Linux on a T2 is indeed not straightforward, but I managed to do it. T2 complicates the OS installation, not the eGPU's, to my understanding. I've actually given up on elementaryOS since (and managed to kill and revive my MBP in the process). I'm trying to get it to work with Ubuntu 20.04 instead now - https://egpu.io/forums/thunderbolt-linux-setup/egpu-not-detected-on-ubuntu-20-04-macbook-pro-2019/. I feel I'm really close. Would really love the legendary ninja's help here ;)! Thanks 😀 

 

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

.

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