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My MacBook Pro has a "Global Reset" error on every reboot since a few days. The exact error message in the error report:
Global Reset
GRC0 = 0x00000400
GRC1 = 0x00010001
I recovered macOS and did all updates, but the error is still present. I cannot find anything about the error codes above. What is the problem?
MacBook Pro 13″, macOS 11.4
I believe I have the same problem. Started after I upgraded to Big Sur.
Every time I restart, it hangs during the restart (with a multi-language error message written in grey on black background) and then restarts again. When the computer is finally started I get the exact same "Global Reset" error message as you.
If I turn off the computer, it seems like it doesn't fully shut down, because every time I start it again, it won't respond, so I have to hold down the power button for ten seconds after which it is fully turned off. After that, I can start the computer again.
These problems happen every time.
I have narrowed down the problem a bit - it seems like this happens only when I have two displays attached to my Thunderbolt 3 Dock (which I always have). I can have each Display connected individually without any problems, but as soon as both are connected I get the "Global Reset".
I have tried everything that I can think of without any luck, including
The only options I still haven't tried is to buy a new computer or buy 1-2 new displays, but for obvious reasons I would like to avoid that.
This seems to be a serious bug in Big Sur as everything has worked perfectly well before I upgraded.
My hardware:
I believe I have the same problem. Started after I upgraded to Big Sur.
Every time I restart, it hangs during the restart (with a multi-language error message written in grey on black background) and then restarts again. When the computer is finally started I get the exact same "Global Reset" error message as you.
If I turn off the computer, it seems like it doesn't fully shut down, because every time I start it again, it won't respond, so I have to hold down the power button for ten seconds after which it is fully turned off. After that, I can start the computer again.
These problems happen every time.
I have narrowed down the problem a bit - it seems like this happens only when I have two displays attached to my Thunderbolt 3 Dock (which I always have). I can have each Display connected individually without any problems, but as soon as both are connected I get the "Global Reset".
I have tried everything that I can think of without any luck, including
The only options I still haven't tried is to buy a new computer or buy 1-2 new displays, but for obvious reasons I would like to avoid that.
This seems to be a serious bug in Big Sur as everything has worked perfectly well before I upgraded.
My hardware:
I have the same problem with a 2018 13-inch Macbook Pro.
The description that @ChristianGot comments is exactly what happens to me. In my case, I have the two displays connected directly to two Thunderbolt ports on the Mac.
It's a very annoying problem, because if the Mac is not connected to the charger it drains the battery. It has happened to me on several occasions, after working at home with the Mac connected to the two monitors, I turn it off, disconnect it from the charger, put it in the backpack, and the next day it is completely discharged.
So far, the only solution I have found is to unplug at least one of the monitors before shutting it down/restarting it. I have tried resetting the SMC and NVRAM but it does not solve the problem.
My characteristics are as follows:
Fact 1: All macbook pros 13" 2018/2019 have the exact same issue.
Fact 2: No solution from Apple in over 2 years!
Isn't it incredible, how Apple was able to jus "wait it out", till all our guarantees (even extended Apple Care) are obsolete?
So now we have to live with workarounds, and the culprit has to do ... nothing.
Yeah Apple: Just send us replacements, I'd accept a M1 Max .. but I can't except just being ignored on this topic.
I can confirm this behaviour! If i have both displays attached - one on the left, on the right - i need to force the MacBook to shutdown and then start it. If i have only one or none display attached, i can start the MacBook as intended with just one press to the power button.
I was in the Apple Genius Bar a week ago. They checked the hardware - everything was fine. Then they suggested to re-install OSX with internet recovery and did this for me (btw for free). The error with "Global Reset" was gone, but the behaviour when the MacBook was shutdown in the evening and should be startet again in the morning, is described as above with two displays attached. So, i can confirm that there is a serious bug in Big Sur.
Same problem here. I have a very similar setup as ChristianGot and did similar troubleshooting and still get the exact same results. I've also done a fresh install of macOS 11.5.1 from internet recovery and at first I thought it was solved but the issue came back a few days later when I next rebooted.
My setup:
Rebooting causes the kernel panic followed by:
Global Reset
GRC0 = 0x00000400
GRC1 = 0x00010001
If I do a full shut down, I have issues getting it powered back on unless I hold in the power button.
Hi all,
I have exactly the same issue. Very annoying!
Somehow I am happy to see, that it seems to be an Apple bug and not a specific defect on my hardware. Nevertheless this is something I am not willing to accept.
My setup:
Both monitors plugged in lead to this error message when I attemp to reboot:
Global Reset
GRC0 = 0x00000400
GRC1 = 0x00010001
Shutdown doesn't work properly. I need to hold down power button for 4 seconds before I can start my Macbook again.
I will try to open a ticket at Apple, too. Happy to hear what you all can find out.
I opened a case at Apple support here in Germany. It was actually escalated to the engineering department. I had to send log-files and a video of the actual issue. After several phone calls it now has ben escalated to the specialists in the US. Now they want me to do a clean Mac OS installation to see if the issue still exists. If yes, they want me to send the log-files from the clean system. Sorry Apple... in addition to work and family, I have no time for such nonsensical work. It is more than obvious, that alle macbook pros 13" 2018/2019 have the exact same issue.
I guess I have to live with it for now. My workaround:
Same here, after 3 hours at the last upgrade my built-in display went to black. Now, the screen works during the boot (with some issue at the bottom, as you see at the picture), then the sign-in screen just flash-up for a sec and disappear (same after open the uppercase).
MacBook Pro (13-inch, 2018, Four Thunderbolt 3 Ports),
Benq w USB-C/Display,
AOC w USB-C/HDMI
I have the same issue here. It's occurred with multiple docking stations. I've changed monitors. Both monitors don't have to go through the docking station. I've had both from docking station, and also one from dock and one from USBC off macbook.
If I reboot without 2 monitors attached, and then connect the monitor, I don't get the reset.
FWIW, I also have issues with bluetooth devices losing connection periodically, as if it's a bus issue, as I'll lose everything on docking station plus bluetooth, (Which is not going through docking station). Although built in keyboard and trackpad are continue to work fine.
Same issue here. Thanks for all the troubleshooting you have done. It really helped narrow down the problem. It was starting to drive me crazy.
Just curious about whether you have found any workarounds ...
Yup - same here, installed Big Sur about 3 weeks ago and seeing the same error.
But also, when I choose to restart my system, it tends to restart itself a second time, with an error on the screen statinit had trouble starting.
And I lose my OS Dark Theme every time I reboot.
As I use two external monitors directly connected, I'll try the various options others have tried here too.
Same issue here as described by everyone... I also have severe battery drain when my MBP 2018 4TBT is in this "pseudo-shutdown" state. Leaving it unplugged and shut down over night basically gives it a deep discharge - where I need to leave it plugged in for at least 5-10min before having to spam / hold the power button to get any response out of it again.
I the get treated with a long black and white error message on boot-up and this kernel-error on the desktop:
Global Reset
GRC0 = 0x00000400
GRC1 = 0x00010001
Many Bluetooth , Wi-Fi and even Ethernet connections keep interrupting aswell.
It all started when i got my 2x Dell U2721DE and upgraded to Big Sur. Its frustrating. There is a very fatal error with this specific combination of hardware and Big Sur.
I also encountered the same problem. When I connected my two Dell u2419h monitors, it would have such a problem. And in this system, when the two monitors are connected externally, the computer heating is more serious than the previous system.
Now I can only go back to Catalina to avoid my computer overheating.
My hardware:
MacBook Pro (13-inch, 2018 - 2.3GHz Quad-Core i5, 16GB RAM, Intel Iris Plus 655 GPU)
Display 1: Dell U2419H Display
Display 2: Dell U2419H Display
Belkin Thunderbolt 3 Express Dock HD
Apple just released macOS Big Sur 11.5.2 - I installed the update but still experiencing the issue.
One theory I'm starting to consider is could this all be related to Ethernet connections and not actually monitors? It seems like most people are either using Thunderbolt or USB-C docks that have Ethernet or the monitor itself has an on-board Ethernet connection....
The Ethernet connection on my USB-C dock seems to not work if I have it plugged in during boot. (it will say "cable disconnected") but if I unplug/replug it in while the system is already on, it starts working again.
It could be Ethernet. Mine is behaving the same way. If I had to guess it seems bus related, as I have issues with USB/Bluetooth keyboard/mice/headsets periodically in addition to the monitors/ethernet.
MacBook Pro has "Global Reset" error on every reboot
