bluetooth not working after monterey upgrade

The following will require any USB keyboard and mouse. If you don’t have them, borrow or buy them, they are inexpensive!

1.     Connect the USB keyboard and mouse to the computer.

2.     Open System Preferences – Bluetooth

3.     Un-pair the wireless keyboard and mouse.

4.     Turn off Bluetooth

5.     Restart the computer in Safe Mode per the directions in https://support.apple.com/en-us/HT201262

6.     Restart the computer normally.

7.     Open System Preferences – Bluetooth

8.     Turn on Bluetooth

9.     Re-Pair the wireless keyboard and mouse.

10.  Unplug the USB keyboard and mouse and begin testing the wireless devices again. 

Apple needs an update to Monterey with a fix so users aren't going through a ridiculous time consuming Safe Mode "solution" plus having to go and buy something? GMAB

I did this (actually this is what must have worked before, coz I remember doing it before as well, did it again just now).

Note, I tried the SMC method and everything I did before and it didn't work. So I traced back what I did (trials and errors) noticed this must be the working solution:

turned off BT and ran:

sudo kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport

though it gave me error:

Executing: /usr/bin/kmutil unload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
Error Domain=KMErrorDomain Code=71 "Kernel request failed: (iokit/common) unsupported function (-536870201)" UserInfo={NSLocalizedDescription=Kernel request failed: (iokit/common) unsupported function (-536870201)}

I then proceeded to do:

sudo kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport

Then opened my BT prefs, turned it ON and removed the device. Paired it again and it worked. I don't know if that error shows something wrong with the BT module.

got that from:

https://apple.stackexchange.com/questions/251842/how-to-restart-bluetooth-service-from-command-line

This was found on the net.

Tip:

Some users report that they don't see the "Reset the

Bluetooth module" option on 12.0.1 version of macOS Monterey. If that's

the case - another way to reset your Bluetooth is to open the Terminal

and hit this command: sudo pkill bluetoothd 

It will help us get a good idea of what is causing your problem if you provide a report of your system, that way we do not have to play 20 questions with you. The report we are requesting does NOT provide any personal information and is extremely safe to use. Please navigate to www.Etrecheck.com and download the free version of EtreCheck. Once you have you downloaded the app and installed it, please run the report and save it.

When you have your report, you can attach it when you reply to this message and we can then review it and help you determine what is needed to get your system running well again.

For instructions on how to download your EtreCheck report and attach it to your reply to this message please click https://discussions.apple.com/docs/DOC-250000211

This may not work but it’s worth a try.

1. Hold down Shift + Option on your keyboard and click the Bluetooth icon in your toolbar.
2. Then, click Reset the Bluetooth module.
3. Click Ok to confirm.
4. Now try repairing your device.

I have the same issue with my Bluetooth stereo headset, it connects and disconnects.

I can't get that menu to come up with the reset Bluetooth module. It changes but doesn't contain that entry. Any way to do this maybe through terminal?

Monterey has a broken Bluetooth module and Apple needs to fix this.

PS: I followed some Youtube video this morning that had a lot of methods to do this and it worked until when I had used the Bluetooth headset on my phone then came back to my laptop when it stopped working again. It means whatever is happening is happening over and over.

https://www.youtube.com/watch?v=kaIaM7aRthY&t=27s

In a nutshell I tried:

• tried that menu thing and it doesn't show on the menu like I explained
• deleted Bluetooth.plist file (didn't work)
• removed IP hiding from Safari and ...
• did SMC reset and it worked (after trying to connect to it a few times) (but for me to keep on resetting my machine just to connect BT is a no no)

Whatever they changed in the OS is not working properly.

I have noticed something. This thing keeps happening as long as it disconnects. Any reconnections are unsuccessful.

However, the problem in my case is now proving to be related to something else entirely; the sound. When the BT is trying to change the sound from Speakers to the headset, it changes briefly then disconnects and disconnects the headset. Sometimes it connects the headset, and still the sound doesn't show option to play through BT. So I did this:

sudo pkill bluetoothd 
sudo pkill systemsoundserverd

reconnected headset and it worked. It seems like that bt kill command also works same as kextload...

I hope this helps with debugging this and getting us BT back.

Will update if I horn in further as I use it.