Bluetooth won't turn on after Yosemite upgrade

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Bluetooth won't turn on after Yosemite upgrade

After upgrading from Mavericks to Yosemite on my Mac Pro Mid 2012 (bought in 2013) bluetooth is disabled and the button to turn it on in System Preferences, Network, Bluetooth PAN, Set Up Blootooth Device is greyed out. This Mac has built-in Bluetooth.

The bluetooth menu at the top right has a squiggly line through it and when I click it it says Bluetooth: Not available. In About this Mac, System Report, Bluetooth says No information found.

Bluetooth File Exchange.app says No Bluetooth Hardware Found.

Here's what I've tried so far:

Reinstalled Yosemite.

Zapped PRAM.

Deleted and re-added Bluetooth PAN in Network System Preferences.

Deleted /Library/Preferences/com.apple.Bluetooth.plist and rebooted.

Deleted /System/Library/Caches/com.apple.kext.caches/ and rebooted.

sudo kextunload & kextload AppleBluetoothMultitouch.kext IOBluetoothFamily.kext IOBluetoothHIDDriver.kext from /System/Library/Extensions

sudo launchctl unload /System/Library/LaunchDaemons/com.apple.blued.plist

sudo launchctl load /System/Library/LaunchDaemons/com.apple.blued.plist

Disk Utility, Repair Disk and Repair Disk Permissions

Quit blued in Activity Monitor.

Any help is appreciated.

Thanks

Mac Pro (Mid 2012), OS X Yosemite (10.10)

Posted on Oct 18, 2014 5:44 PM

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Answer 1

Top-ranking reply

CarstenCK Author

Level 1

10 points

Oct 19, 2014 1:03 PM in response to CarstenCK

Problem fixed!

I restarted into my 10.8.4 backup and Bluetooth wasn't working there either.

Then I did a full shutdown, 2 PRAM resets and rebooted into Yosemite and it started working again.

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Answer 2

Oct 22, 2014 6:14 AM in response to CarstenCK

glad you fixed - found this in another thread that worked for me:

1. disconnect all USB peripherals (I have a ethernet USB adapter)

2. shut down

3. wait 3 minutes

4. restart - BT working fine

Hope this helps someone else

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Answer 3

Jan 12, 2015 7:33 AM in response to CarstenCK

My issue was somewhat similar, Bluetooth on my Macbook Pro (Mid 2012, Yosemite) wouldn't turn back on after I turned it off on purpose. My wireless keyboard and mouse weren't connecting and I thought that might be an easy jumpstart, but no, just a headache. After I clicked the button to turn off Bluetooth, the on button greyed out.

Things I tried:

1. Reset PRAM - nope

2. disconnect all peripherals, not just USB, and reboot - nope

3. Delete /Library/Preferences/com.apple.Bluetooth.plist and reboot - YES! this worked. (Steps listed here: www.igeeksblog.com/fix-bluetooth-not-available-error-mac/). At this point, the Bluetooth automatically came back on, as did my keyboard and mouse.

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Answer 4

Mar 17, 2015 6:02 AM in response to CarstenCK

This thread was super helpful. I'm relatively new to using macs, and I am so grateful for the Apple Support Communities. Thanks for posting these options!

Unplugging all my USB devices and resetting my PRAM did the trick.

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Answer 5

Jul 18, 2015 2:49 PM in response to CarstenCK

Here is what I did to fix this problem:

http://wp.me/p47fo9-5s

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Answer 6

Oct 12, 2015 8:28 AM in response to CarstenCK

I only had to do 1 PRAM reset but this is the 4th or 5th time I have had to go through this process. When is Apple going to fix this bug? It’s ridiculous.

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