How Do I Reset The Smc On My Macbook Pro
Simone Whitmeyer
On a Mac with Apple silicon or an Intel-based Mac with the Apple T2 Security Chip, use Erase Assistant to reset your Mac to factory settings before you trade it in or sell it. You can also use Erase Assistant to erase your Mac before reinstalling macOS. Erase Assistant removes your content and settings, and any apps that you installed. To open Erase Assistant, click the Erase All Contents and Settings button in Transfer or Reset settings.
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.
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".
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.
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.
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.
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).
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.
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 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 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.
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.
I have tried to enter the safe mode again, but it failed. It keeps loading forever. Even after I made the PRAM reset. Sometimes it started to lag just because I opened some websites that contain videos. I have 4 GB of RAM on this macbook.
@bypasser11 - 4 GB will effect things as it's so little (sorry). You will likely need to trim what apps you have loading at startup and not try running too many concurrently (two at most). You likely need to also clean the drive as you really need free space for the system to leverage as virtual RAM. This is where you need to have 1/3 of the drive left empty.
Frankly, I think the best thing here is to just wipe the drive down (format it), Then install a new OS then re-installing what you really need. It tends to be quicker than trying to hunt down whats amiss here.
Lets see why your systems SMC needs to be constantly reset. Reset it again but this time lets go into diagnostics when you restart the system press and hold the D key. Did any errors pop?
You may need to check the drive using Disk Utility as well as check it for malware & viruses. While you can boot up in the recovery partition or Internet recovery to gain access to Disk Utility, I find connecting a bootable external drive which also has a good antivirus & malware software to scrub the drive.
So do you have a friend that has a Mac so he can help you create a bootable drive with the OS installer following this guide: How to create a bootable macOS High Sierra installer drive. Once you've got the installer drive setup you can then boot up under it to use Disk Utility to properly format the drive and then install the OS.
Sometimes your Mac takes on a life of its own. Your screen resolution randomly changes, the fan starts running full speed, the battery won't charge correctly, or Bluetooth and Wi-Fi stop connecting properly.
Over time, your once blazing-fast Mac will inevitably be slow to start up or struggle when opening files. When this happens, your first step should be to check storage on Mac to help you know how to approach cleaning up your Mac.
After zapping the PRAM or NVRAM, some of your user settings will also reset, such as keyboard layout, mouse tracking, startup disk, date and time, and volume. Check System Preferences and adjust anything that was changed. Otherwise, that's all there is to reset PRAM on Mac.
The SMC (system management controller) is a chip on Intel-based Macs that manages important physical components of your computer. The SMC controls various hardware functions like cooling fans, status lights, system performance, and power supply. It differs from the PRAM, which deals more with operating system software.
The process for resetting the SMC on a Mac may differ depending on the Mac model you have. Older Intel Macs, powered by Intel processors, have a different process compared to newer Macs with Apple silicon (M1 and M2 Macs).
Some Apple forums have noted that shutting off your Mac and waiting for 30 seconds seems to work like an SMC reset. So if you experience any of the SMC issues mentioned above, you can give this trick a try.
Before resetting the SMC on any MacBook, MacBook Pro, or MacBook Air, check whether your Mac model has the Apple T2 Security Chip. These chips are in MacBooks, Macbook Pros, and Macbook Air laptop models from 2018 or later.
Similar to Mac notebooks, resetting the SMC varies depending on the model of your desktop Mac. Check to see if your iMac, Mac Mini, or Mac Pro model has the Apple T2 Security Chip. This typically applies to models from 2018 or later.
Resetting the SMC on MacBook, MacBook Pro, and Macbook Air models depends on whether the battery is removable or not. Your Mac most likely has a non-removable battery if it is from mid-2009 through 2017 (pre-2018 models).
Another way to deal with poor Mac performance is to use specialized Mac cleaning software designed to keep your machine running smoothly all the time. Avast Cleanup for Mac finds and removes old files, apps you don't use, and other junk floating around on your Mac and slowing you down.
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