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eGPU (Sonnet) not longer working with a 2018 Mac mini after upgrading to Sequoia 15.4
- Thread starter Keblar
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Just updated and for now, no freezing with my Breakaway Puck RX5500XT. Which Sonnet eGPU are you using?
When you write "pressing power button", you mean the one on the computer or the eGPU? My eGPU doesn't have any power button so I assume you have another model?
I mean the power button of the Mac mini. The blue light of the eGPU lights, up and after 30 seconds turns off
Ok, fine on my side… for now! Sorry for not being really helpful! Do you have a full 15.3.2 backup at least, CCC or TM?
I reverted to 15.3.2 same problem.
Thanks Patrice. I’ll keep trying to fix it.
Thanks Patrice. I’ll keep trying to fix it.
Maybe something to do with the T2 firmware update (don’t know if there was one however between 15.3.2 and 15.4)?
You could also try an older MacOS (Sonoma, Ventura)… I understand it worked before with 15.3.2? Strange…
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I think there was a T2 update. I was having problems with BridgeOS-related kernel panics and I upgraded from 15.3.2 to 15.4 to see if that would help. It did not. But, I did notice that there was another BridgeOS version number.
For the record, my Firmware & BridgeOS versions are 2069.80.3.0.0 (iBridge: 22.16.13060.0.0,0) and I'm running 15.3.2.
For the record, my Firmware & BridgeOS versions are 2069.80.3.0.0 (iBridge: 22.16.13060.0.0,0) and I'm running 15.3.2.
I don't know if downgrading to 15.3.2 will downgrade the firmware and BridgeOS. My guess is that it won't.
can we expect Apple to release further Sequoia updates till macOS 16 that modify the firmware? I mean, Intel Macs should work with eGPUs.
Send them any kernel panics that you get. Also, you can report a bug. Can someone link that for Keblar?
I think it could be done via DFU… but I am not sure if it also applies to Intel Macs?
***EDIT: not sure it’ll downgrade EFI but at least, T2 iBridge.
T2 DFU Mode Archives - Mr. Macintosh
mrmacintosh.com
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Good luck for OP, I searched for previous iBridge bundle… and I think (maybe) it could be buried inside the 15.3.2 installer. Now, how to extract it and restore it via DFU, out of my skills!
In my case, I repeat, no troubles with latest EFI and T2 firmware. In fact, it was already updated since a while when I got (I don’t know how, don’t ask me, it came from the AppStore) a previous 13.7.5 Ventura build installed.
I am not responsible if anything goes wrong (and not even sure if they are the correct iBridge T2 firmwares?):
***EDIT: looking here - https://mrmacintosh.com/category/t2/ - , previoud link contains newer T2 firmwares. Unfortunately for OP, I have absolutely no idea of the procedure to restore an older one?
***EDIT: looking here - https://mrmacintosh.com/category/t2/ - , previoud link contains newer T2 firmwares. Unfortunately for OP, I have absolutely no idea of the procedure to restore an older one?
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How to Restore BridgeOS on a T2 Mac + Boot a Mac to DFU Mode
macOS Update brick your Mac? This article will show you how boot to DFU Mode and restore BridgeOS on a T2 MacBook Pro, Air, iMac Pro, Mac Mini & Mac Pro!
mrmacintosh.com
How To Downgrade T2 BridgeOS Beta to a Production Version
Use Apple Configurator 2.12.1 to downgrade Big Sur BridgeOS Beta to a Catalina Production version of if you are having problems. Info inside!
mrmacintosh.com
I don’t even know if OP will be able to do anything at this point as Apple stop signing precedent T2 firmware one week after the new one is issued…
Now my Treebleet and RX 580 are not working. I haven't upgraded yet. Did you figure anything out, OP?
Can you see your eGPU in system settings? I still can, even though my RX 580 is not working.
Can you see your eGPU in system settings? I still can, even though my RX 580 is not working.
frou
macrumors 68000
Oh god damn it, I was going to update to Sequoia since the following finally got fixed in 15.4:
But my Sonnet eGPU won't work at all? That's the only way I can run my multi-monitor setup.
Seemingly can't win with this crap.
But my Sonnet eGPU won't work at all? That's the only way I can run my multi-monitor setup.
Seemingly can't win with this crap.
frou
macrumors 68000
Sounds like it's the big box one that stops working
I have the 550W one with an AMD Vega card in it. To be clear, I haven't tried 15.4 (or Sequoia at all) yet so am grateful to get forewarning from this thread.
I have the 550W one with an AMD Vega card in it. To be clear, I haven't tried 15.4 (or Sequoia at all) yet so am grateful to get forewarning from this thread.
Actually, I think my issue was a loose thunderbolt cable. I'm still on 15.3.2! And I'm still scared to updated to 15.4 . . .