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Brian Y

macrumors 68040
Original poster
Oct 21, 2012
3,776
1,064
Hi All,

Since upgrading my iMac to Mojave, I can no longer use my eGPU/TB3 devices.

I've tried an SMC/PRAM reset, and it's a clean install. I've double checked my eGPU setup and it works from my MBP running High Sierra, and was working on my iMac pre-mojave.

Any ideas/anyone else experiencing the same issues?
[doublepost=1539461958][/doublepost]Just to add to the weirdness... I did some further tests.

It seems to only be an issue when using active thunderbolt 3 cables. When using a short 30cm passive one it works.

It also exhibits the same behaviour on my MBP. Active cable works fine on high Sierra on both.

Anyone else using an active TB3 cable?
 
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