Hey guys! Hope you're all doing well :)
So... here's the thing. I have been waking up to my mac being shut down despite being connected and the lid just closed. Upon pulling the shutdown cause, I've gotten -20, but I haven't been able to find what it is.
There was a similar thread about the same code a while ago here in the communities, but I couldn't find the -20 here. Should I be worried?
Thanks in advance and stay safe!
Fln
MacBook Pro with Touch Bar
Hi fln,
Thanks for the follow-up.
Just to confirm, does this happen in safe mode? If you’re unsure, test that now following the steps here: How to use safe mode on your Mac - Apple Support
We hope you have a great rest of your day.
Hey there, and welcome to Apple Support Communities, fln!
From our understanding, your Mac is restarting unexpectedly. We can certainly understand your concern and can help provide some insight.
To start, follow each of the steps found here: If your Mac restarted because of a problem - Apple Support.
Kindest regards!
Hi MoonJ
Thanks for your answer! I already went through that, and were able to find that the code -20 is being registered by the SMC. What I really need to know is what that specific code means, otherwise I have no way of knowing the origin of the problem.
This issue has been only on BigSur, although through several versions. It's happened with and without peripherals connected, and the weird thing is that I cannot report the issue because the computer boots, opens all the windows that were open before the shutdown (although Safari logged out from accounts for example), and works as if nothing happened.
Any idea what the -20 could be?
Thanks again for your response!
Best,
Fln
Previous shutdown code -20?
