nicolasembleton/restart_bluetooth.sh

caballerofelipe · 2020-08-06T21:26:41Z

A few notes about the topic that might be some help to somebody:

Maybe Music (formerly iTunes) or iTunes, depending on your OS version, is causing the problem. I've been struggling for about an hour now with this and after quitting Music the problem is gone. Although note that I did try a bunch of commands before but it seemed that none worked, sound to BT was restored once I closed Music.
I just found out that bluetoothaudiod is only live while an audio device is connected. When disconnecting the device pgrep bluetoothaudiod doesn't return anything.
Along with the previous bullet, another thing that might have worked (I doubt it) is that I opened 'System Information' (Apple Menu > About This Mac > System report).
I don't want to restart my Mac but... when I've tried, the problems goes away. So I would love to have a solution. The use case is as follows: you're using your mac to work (or whatever) and want to hear some music, BT keeps disconnecting so you have to either not use BT or restart, which will kill your workflow.
Even though audio connects/disconnects my Magic Mouse keeps working.
This might help How to fix Bluetooth headset audio issues on macOS Catalina?, read the link but basically the options here are:
- Disable Ask Siri and Turn off Voice Control feature
- Reset NVRAM

I hope there is some straightforward solution to this... 😕

rogerluan · 2020-08-19T01:59:07Z

macOS Catalina, NONE of these solutions are working:

None of the solutions in this page, including but not limited to:
https://gist.github.com/thiagoghisi/50c3ba835ea72cdb0318fb3306fd2c76
the blueutils solutions
all solutions here https://apple.stackexchange.com/questions/251842/how-to-restart-bluetooth-service-from-command-line
closed Music and Spotify apps
removed and re-paired my AirPods (the bluetooth device I'm trying to connect)
disabled Siri and Voice Control

And the symptoms are: when I try to connect to my AirPods, it connects, but the audio doesn't connect. After exactly 10 seconds, the AirPods disconnect (bluetooth still on, audio still goes through the internal speakers).

I second @cabellerofelipe: rebooting the mac does the trick, but it's a pain in the ass 😞

Does anyone have any other ideas? 😬

rogerluan · 2020-08-19T04:29:46Z

I realized there was a macOS Catalina update available and decided to update https://support.apple.com/en-us/HT210642
It supposedly fixed:

Resolves an issue where certain USB mouse and trackpads may lose connection

Which I'd probably understand that it was actually issues with bluetooth (of which they forgot to mention sound devices).

I was forced to reboot, so the issue is gone for me but I'll definitely come back here if the bluetooth issue arrises again.

rogerluan · 2020-08-19T17:21:42Z

I took a stab at fixing this by unloading and re-loading all the kext that is related to audio and bluetooth. I have no understanding of kext, audio or bluetooth, though, so bear with my solution:

function xgh() {
    shit_to_reboot=($(kextstat | grep -i "blue" | awk '{print $6}'))
    echo "Found ${#shit_to_reboot[@]} shit to reboot:"
    for shit in ${shit_to_reboot[@]}; do
        echo "Rebooting $shit"
        sudo kextunload -b "$shit"
        sleep 5
        sudo kextload -b "$shit"
        echo "Rebooted $shit"
    done

    shit_to_reboot=($(kextstat | grep -i "audio" | awk '{print $6}'))
    echo "Found ${#shit_to_reboot[@]} shit to reboot:"
    for shit in ${shit_to_reboot[@]}; do
        echo "Rebooting $shit"
        sudo kextunload -b "$shit"
        sleep 5
        sudo kextload -b "$shit"
        echo "Rebooted $shit"
    done
}

kextunload man: https://www.manpagez.com/man/8/kextunload/osx-10.4.php

However, the code above doesn't work because all those kext have dependencies that you can check by calling kextstat.

Next, I was going to recursively unload all the dependencies before attempting to unload a kext that has dependencies alive. That would be my next move.

Before doing that, I realized that there was a macOS update available https://support.apple.com/en-us/HT210642 that supposedly fixed an issue where certain USB mouse and trackpads may lose connection. I'm gonna assume that that issue was affecting all bluetooth connections, so speakers could be involved.

I decided to update my mac to the latest version, which required a reboot, so the problem stopped occurring (as stated in my last post above).

I'll definitely come back to this thread if the problem happens again though. So far, several hours have lapsed without facing the issue.

Hope this helps someone.

caballerofelipe · 2020-08-27T19:37:41Z

I just started having choppy sound and tried this, which apparently worked, no problem for 5 minutes so far.

Closed Music (iTunes)
Turned off headset (Bose QC35 ii)
Turned headset on, macOS wasn't detecting it (iOS did connect automatically)
Turned off bluetooth
Turned on bluetooth
macOS wasn't automatically connecting headset
Manually connected headset
Opened Music
Now listening to music for 5 minutes.

I'm using macOS 10.15.6 (19G2021)

rogerluan · 2020-08-27T21:16:43Z

I'll definitely come back to this thread if the problem happens again though. So far, several hours have lapsed without facing the issue.

I have faced the problem again several times. However, after the update, running:

sudo kill `pgrep coreaudiod`

seems to be actually killing the audio system (which wasn't happening before), which actually resolves the problem. So, the problem still arrises, however it is fixable without rebooting 😬 (so far, anyway).

iexa · 2020-09-02T03:54:00Z

I found that killing the bluetoothaudiod service helps if audio does not seem to be working. This case must be similar to the coreaudiod one. Thx.

rogerluan · 2020-10-15T00:35:48Z

I filed a radar about this. Then added it to open radar: https://openradar.appspot.com/FB8801301

igorrs · 2020-11-04T15:34:06Z

The wifi+bluetooth trick worked for me. Thanks.

agate · 2021-03-19T10:59:27Z

#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl start

I use this script and fixed my problem :D

dmitrym0 · 2021-04-13T13:47:35Z

```shell
#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl start

I use this script and fixed my problem :D

Looks like you can't react to gists so 👍

xab3r · 2021-04-14T04:54:15Z

macOS Catalina, NONE of these solutions are working:

None of the solutions in this page, including but not limited to:

OP

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2262820

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2559742

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2668318

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2682108

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2882108

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2404717

https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-2964025

https://gist.github.com/thiagoghisi/50c3ba835ea72cdb0318fb3306fd2c76

the blueutils solutions

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

closed Music and Spotify apps

removed and re-paired my AirPods (the bluetooth device I'm trying to connect)

disabled Siri and Voice Control

And the symptoms are: when I try to connect to my AirPods, it connects, but the audio doesn't connect. After exactly 10 seconds, the AirPods disconnect (bluetooth still on, audio still goes through the internal speakers).

I second @cabellerofelipe: rebooting the mac does the trick, but it's a pain in the ass 😞

Does anyone have any other ideas? 😬

I had a similar issue with BT on my MacBook Pro 13" 2017 for some period of time. Seems it was a software problem because it's gone over time, I assume with some of the MacOS updates.
My solution was to plug an external BT dongle to the laptop, make sure OS recognized it and then unplug it. Sometimes I tried to connect/disconnect the headset via that external adapter. This trick always worked. That sounds crazy but I had to keep the "rescue" BT adapter in my backpack.

rogerluan · 2021-04-18T13:53:40Z

Latest update from me, who initially wrote this: https://gist.github.com/nicolasembleton/afc19940da26716f8e90#gistcomment-3422499

I've been running macOS 11.2 since Feb 8th and since then the bluetooth problems decreased from like "a few times a day" to "maybe once a week" or even less often than that.

imcodybell · 2021-07-09T03:17:28Z

just $ sudo pkill bluetoothd
then daemon bluetooth service will restart self (tested success on macOS 10.14+).

paulbargaoanu · 2021-08-27T14:11:22Z

#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl start

I use this script and fixed my problem :D

Seems to be working on a Mac Mini 2018 running Mac OS Big Sur 11.5.2 (20G95)

Thank you very much, kind stranger! 🙏

agate · 2021-08-27T16:18:39Z

@paulbargaoanu you are welcome. I am glad it works :D

dobando-dev · 2021-09-01T12:27:18Z

#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl start

I use this script and fixed my problem :D

Works for BigSur. Thanks!

AnaatGitHub · 2022-01-20T18:17:57Z

#!/usr/bin/env bash

pgrep audio | xargs sudo kill
pgrep bluetooth | xargs sudo kill

sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i blue | awk '{ print $3 }' | xargs sudo launchctl start
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl stop
sudo launchctl list | grep -i audio | awk '{ print $3 }' | xargs sudo launchctl start

After months of searching and trying stuff, this seems to work on Catalina OS (10.15.7) on a MacBook Pro 8,1. As soon as I ran the script, the bluetooth started working again. No rebooting or resetting the SMC module needed so far. The bluetooth conection will still drop out after a while, but the script is definitely more convenient than the rebooting every 30 minutes like previously.

Thanks a bunch, @agate ! Do you have any idea as to why this works and if there is a more permanent fix?

Cheers.

agate · 2022-02-08T07:16:42Z

@AnaatGitHub so I just violently killed all the Bluetooth and Audio related processes. I guess MacOS is smart enough to restart all those background processes if you are trying to use them later. You know "reboot fixes almost 99 percent problem" lol.

BTW, I am not sure if there is any other way / app for doing such thing.

nicolasembleton/restart_bluetooth.sh

caballerofelipe commented Aug 6, 2020 •

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rogerluan commented Aug 19, 2020 •

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iexa commented Sep 2, 2020 •

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igorrs commented Nov 4, 2020

agate commented Mar 19, 2021

dmitrym0 commented Apr 13, 2021

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paulbargaoanu commented Aug 27, 2021

agate commented Aug 27, 2021

dobando-dev commented Sep 1, 2021

AnaatGitHub commented Jan 20, 2022

agate commented Feb 8, 2022

	#!/bin/bash

	sudo kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
	sudo kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport

nicolasembleton/restart_bluetooth.sh

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