HOW TO RESET SYSTEM MANAGEMENT CONTROLLER ON MAC

The SMC can modify a variety of essential functions on your Mac, hence making it an integral component. It is the hardware that incorporated into Mac’s motherboard and facilitates smooth system functioning. However, there are times when it can run into some trouble. If you are facing the same issue, then read through the blog to fix it effectively. Here is how you can reset the SMC on a Mac.

What SMC helps to control

The SMC execute the given functions:

1. Takes action after the power button is pressed. Decides whether the click is for sleep, power off or caused by a misstep.
2. Identify and take action in closing or opening the lid of Mac.
3. Controls the performance of portable battery that includes calibration, charging and showing.
4. Manage keyboard backlighting.
5. Manage display backlighting.
6. Choose internal or external sources of videos on iMacs.
7. Launches hard drive power-up sequences alongside spin downs.
8. Manages sleep mode.

When to reset the SMC

1. Irregular performance of the sleep mode.
2. Mac unexpectedly going on sleep, even when it is being worked on.
3. No response from Mac to the opening and closing of the lid.
4. Fails to react to the click of power button.
5. The power indicator is incorrect.
6. When Target Display Mode is not active.
7. The battery is not able to charge or may take too much time to load.
8. USB ports malfunctioning.
9. Wi-Fi hardware is not working.
10. Bluetooth is not working.
11. Malfunctioning Status indicator lights.
12. Port lid of Mac Pro not switching off or on.

To Reset Mac’s SMC

The technique for resetting the SMC changes according to the version the user has. It is essential to switch off the Mac before resetting any SMC. If it is unable to shut down, then click the power button until it does.

Using User-Removable Batteries to Reset Mac Notebooks

If you want to reset Mac Notebooks, then you can follow the provided steps:

1. Switch off the Mac.
2. Take out the battery.
3. Hold down the power button for more than 5 seconds.
4. Discharge it.
5. Put the battery back.
6. Switch the system on.

Resetting without Detachable Batteries

1. Switch off the system.
2. Click the left Control, Shift, and Option keys at the same time while holding down the power button.
3. Discharge all keys.
4. Switch on the system.

Resetting via Apple T2 chip

In case you intend to reset Mac using a T2 chip, then go through the below-mentioned steps:

1. Switch off the system.
2. Hold down the power button for around 10 seconds.
3. Discharge it and wait.
4. Click it again and switch on the system.

Another option could be:

1. Switch off the system.
2. Remove the power cord.
3. Now, wait for a bit.
4. Plugin again.
5. Wait again.
6. Hold down the power button to switch the system on.

SMC Reset for Mac Pro

1. Switch it off.
2. Unplug the cord.
3. Open the access panel.
4. Click on the SMC button.
5. Close the side door of Mac Pro.
6. Connect again.
7. Wait for 5 seconds.
8. Switch on the Mac.

Source: https://alexclara971353469.wordpress.com/2019/11/13/how-to-reset-system-management-controller-on-mac/