My apartments power breaker was tripped as the Mac mini (2018 model year), OSX 10.15.5, and the eGPU, Core X with a PowerColor Radeon 5700 XT Red Dragon, was booting. After resetting the breaker for the apartment and rebooting the Mac and Core X the eGPU is no longer detected by the OS. It had been working flawlessly before. Symptoms are as follows:
- Mac boots perfectly fine. All other thunderbolt devices are detected normally. (Every port has been tested to rule out a broken port or thunderbolt controller)
- When plugging in the thunderbolt cable into the Core X its internal fan spins up as normal. It also spins down as normal when the cable is disconnected.
- Since the graphics card has no fans running by default, it's not possible for me to tell if it is receiving power. Only the Core X fan spins.
When plugging in the eGPU, OSX's console gives off error messages viewable in the attached image. They cycle repeatedly until the device is unplugged.
For diagnosing purposes I've tried switching the graphics card BIOS (it has two) to check if one was bricked, but the problem persists.
Has anyone had a similar issue?
