Black screen and stuck reboot with eGPU solved in 10.15.4
- MBP 13(i7-mid 2020)
- Mac Mini (i7-32Gb-512Gb mid 2020):
- Installation attempt with eGPU failed
- Installation done with HDMI and eGPU. I always had to remove the HDMI cable after booting because some programs would open windows that could not be found
- Always black screen when booting with eGPU after the installation
- Updated to 10.15.6 today and still the same issues
I will now reinstall the Mac Mini without the eGPU and hope that after that boot and reboot can take place without switching eGPU off/on.
I'll post the outcome
Mac mini 2018 + Mantiz Venus eGPU (5700XT) + Dual 4K monitor with DisplayPort From 10.15 to 10.15.6 are all black screen status, occasionally can start normally, Tried to unplug the eGPU plug for a new upgrade, I don't feel any use, Apple has no plans to fix this bug https://egpu.io/wp-content/uploads/wpforo/emoticons/default/sad.png
Here's my update. Nothing is solved. The whole setup is very disappointing because I won't just work, too many things to bear in mind for non tech-savvy users which means I often have to 'prepare' the computer before my wife can start working.
Reinstalling the Mac Mini went smoothly, it was a clean install 10.15.6 direcly from the internet using WiFi. Bootcamp setup also no problem until I turned on the eGPU under bootcamp. Drivers were downloaded but then a resource issue was raised. I understood both Graphics adapters were in conflict for resources. I tried to boot and then - after the led is one for a few seconds- turn on the eGPU with no HDMI connected. To no avail, the black screen was back. Boot with eGPU on kept failing, booting first and then eGPU also failed under bootcamp. So, I can't use the eGPU with bootcamp (same goes for MBP 13).
After a while the Mac Mini shutdown. No more led, no noise, nothing. I disconnected from power and waited one night (because I had to go to bed eventually).
Reconnected next day and still no led. I thought the PSU had died however, at the Apple repair center they told me they'd only reset the NVRAM/PRAM. I left frustrated since they did not want to explain why the led stopped working? Also, they charged me (35 euro) for this key combo despite being under warranty because it was a software problem...
Given that the setup was meant for professional use and to allow comfortable work using two 4K-screens in MacOS and Bootcamp. I consider this a serious misinvestment, I can only work with dual screens using Parallels (max 3 cores) and can't boot into MacOS with the eGPU turned on (this is only true for the Mac Mini). So, hassle with HDMI cable each time I reboot (which is often, see hereunder). My first contact in 6 years since I've been using Macs with a repair center, gave me a very uncomfortable sense of being scammed legally. Too high prices, no transparency and rediculously long anounced timeframes for repairs, forcing professional users to pay a 98 euro 'priority' fee for on the spot checks (All people I saw there have paid that fee, they all went back to their cars - remember Corona - to wait 30min until diagnosis and/or repair were done).
For those who care, my frustrations with Mac and the annoying bugs:
- eGPU as mentioned above doesn't seem to be a mature solution
- Logitech unifier wireless dongle with mouse and keyboard worked badly in MacOS for years. This was fixed with 10.15.6! 😀
- Despite using only Apple recommended gear (Caldigit TS3 hub, Razer Core X, RX5700,...) for my new setup there are too many stability issues:
- Caldigit Gbps ethernet stops working within 48h uptime (no BT connected) --> reboot needed
- eGPU see above (eGPU & CalDigit are carefully connected to different TB3 hubs)
- Bose noise cancelling headphones (when Bleutooth connected) & Caldigit TS3 will lead to network(??) and BT issues after some time. The network connection (wired connection on the TS3) becomes almost unresponsive and parasite sounds are heard in the headset before the sound connection fails --> reboot required
- I have to re-index Spotlight at least once a month. When it works it is great, however not finding a document you know is there, is very....
- Once a month - at least- MacOS crashes. The whole system just reboots after freezing up for a short while. I've experienced this with all my Macs (iMac late 2015, MBP 13 mid2020 and Mac Mini mid-2020) except with MBP 15 late 2015(which I sold months ago).
I'm not optimistic regarding stability because now all efforts will go the chip transition and they've spent much effort in the major Big Sur release ...
My Macs require more reboots than my PC's at the moment. Even switching accounts leads to issues if it is done a few times. Hence, before starting to work, I always reboot. I used to do that with windows too until Windows 7. From then on once a week - just to be sure - has been enough.
Also, all my hardware is always fully patched (firmware & OS)
Apple stock short-seller much? Poor soul.
Usually these things don’t clutter up this site too often. Reminds me of the shrieking by Tesla short-sellers when the model lll arrived. LOL.
This is resolved in 10.15.5 and 10.15.6.
Update Mac OS with external TB3 and USB devices disconnected (and your display connected to your Mini).
Following an update to 10.15.6, you can turn on the sleep function in Energy Saver under System Preferences as the Catalina wake-from-sleep bug has been fixed as well. Let your Mac sleep and wake up a few times to confirm.
Now, once you update the OS on your Mac, it no longer has any idea what external devices were formerly connected.
So you need to re-introduce your external devices to your Mac. Start with your eGPU.
Leave your display attached to the Mini. Hot-plug your eGPU into the TB3 port nearest the HDMI port.
Your eGPU will appear as connected in the upper Menu Bar on your desktop screen, and will appear under Graphics in the "About This Mac" drop down screen.
So, now you can shut down the Mini, and connect your display to your eGPU.
Next, power your Mini on and wait approximately 1 minute for the Catalina desktop to appear.
Sign on, and then hot-plug your external TB3 storage drive, and any other devices one at a time.
You're good to go. Your Mac now knows your eGPU and your other external devices. It will remember them the next time you shut down and restart.
Follow these steps and 10.15.6 works great. From this point, start-up normally with your eGPU attached and powered on. Everything's good.
In the future, if for some reason you ever encounter a random one-time occurrence of a black screen on start-up - you now know what to do.
Just shut down your Mini, and power off your eGPU. Then start-up, wait one minute for Catalina to load, and then power on your eGPU. That's it.
(Note - the white Apple logo and start-up progress bar do not display during the one minute it takes Catalina to boot. Other members report that the firmware update included with the Big Sur developer Beta fixes this issue. Hopefully this fix will be included in the first official Big Sur release.)