<< Solved >> BCM943602CS Bluetooth strange behavior at Monterey 12.1

[Edhawk]

I've been playing with another Hack that is running Monterey 12,1, which contains a BCM43602CS card in a PCIe adapter.

Hackintool > General > Peripherals - Bluetooth device shown

Hackintool > USB - Bluetooth device shown connected to internal port

System Information > Bluetooth report - Bluetooth shown,

But not as being Discoverable. Even though the Apple Keyboard and Trackpad are both connected via BT!

I have just found out that it is having issues connecting specific BT devices.

AirDrop works between my iPhone, iMac, MBP and my other hack's, but it is really slow compared to using this feature with my other systems running Big Sur or Catalina. Plus it is a bit hit and miss as to whether AirDrop works or not.

My Bose and MPOW Headphones won't connect with the Monterey system, not matter what I try.

So I went digging in the /System/Library/Extensions folder on Big Sur 11.6.2 and Monterey 12.1, specifically looking for any differences in the contents of IOBluetoothFamily.kext/Contents/Plugins/IOBluetoothHostControllerTransport.kext, which is used in both OS's to drive the Apple Bluetooth module.

What I noticed is a difference between the new and old IOBluetoothHostControllerTransport.kext/Contents/info.plist, which I have highlighted below.

Big Sur -IOBluetoothHostControllerTransport.kext/Contents/info.plist

Monterey -IOBluetoothHostControllerTransport.kext/Contents/info.plist

The main difference appears to be that the Monterey kext's Info.plist has been severely truncated, with the bottom section completely missing from this kext.

The missing section has been highlighted in a red rectangle in the Big Sur screenshot.

I would be very surprised if this wasn't the reason for the Bluetooth modules not working correctly. This is obviously something that Apple need to fix. We will just have to wait and see if the next release of Monterey contains the complete kext.

 

[hellowe]

Seem, it is Apple issue , let's see any fix later.. thx all

 

[Yomiro]

I have the exact same card.

My bluetooth works without an issue. I have it connected to:
Airpods, Airpods Pro, 2 x iphones, 1 ipad, a Bose QCII, XBOX Controller.

Sidecard, Continuity, etc. Everything working.

In the past I had issues like what you described (with a different card) and I realized months later that it was because I didn't plug in the antenna. Slow speed, in/out connections, etc.

 

[hellowe]

Try to upgrade to 12.2 today, no luck, still have the same issue. I have also checked the antenna that are good in place.
Still cannot connect to my iPhone as well as BT headset

Also, disabled all brcm* and airport* related kext

 

[sendit]

Hi there,

Having upgraded to 12.1, my bluetooth cannot be pair some devices, such as my Sony BT headset or my iphone. However, for bluetooth keyboard or mouse, it can be pair without problem. Can anyone advise how to solve this issue?

My config is below:
1. BCM943602CS PCI card
2. BrcmPatchRAM3, BcrmFiremwareData, and BlueToolFixup @ 2.61

At Big Sur, I can be pair any devices without any issue.

Is it better to change to Finvi T919 BCM94360CD for Monterey better compatibility?

Thanks,
Louie

Na airdrop will only work one way

 

[sendit]

I have the exact same card.

View attachment 540396

View attachment 540397

My bluetooth works without an issue. I have it connected to:
Airpods, Airpods Pro, 2 x iphones, 1 ipad, a Bose QCII, XBOX Controller.

Sidecard, Continuity, etc. Everything working.

In the past I had issues like what you described (with a different card) and I realized months later that it was because I didn't plug in the antenna. Slow speed, in/out connections, etc.

Na the antennas are in, 4 of them or threee, i thibk its 4 and i get full speed 900odd meg for widi and that, just airdrop will only work one way, with the router and other actuall macbook pro 2019 and m1 2021 still not sending via air drop, only receive?

 

[sendit]

I have the exact same card.

View attachment 540396

View attachment 540397

My bluetooth works without an issue. I have it connected to:
Airpods, Airpods Pro, 2 x iphones, 1 ipad, a Bose QCII, XBOX Controller.

Sidecard, Continuity, etc. Everything working.

In the past I had issues like what you described (with a different card) and I realized months later that it was because I didn't plug in the antenna. Slow speed, in/out connections, etc.

Thaks, ill have another gander this morning

 

[Yomiro]

View attachment 540451

If that's your current USB mapping. The bluetooth USB mapping is incorrect. It should say Internal. (255)

Like this:

 

[hellowe]

If that's your current USB mapping. The bluetooth USB mapping is incorrect. It should say Internal. (255)

Like this:
View attachment 540493

Rebuilt my usbmap.kext again, the BT controller is internal now, but, still cannot fix the issue.

 

[Feartech]

Rebuilt my usbmap.kext again, the BT controller is internal now, but, still cannot fix the issue.

View attachment 540494

don't forget about the 15 port limit