yosemite-bluetooth-fix.sh

#!/bin/bash
# Install sleepwatcher
cd /tmp
curl -O http://www.bernhard-baehr.de/sleepwatcher_2.2.tgz
tar -zxvf sleepwatcher_2.2.tgz
cd sleepwatcher_2.2
sudo mkdir -p /usr/local/sbin /usr/local/share/man/man8
sudo cp sleepwatcher /usr/local/sbin
sudo cp sleepwatcher.8 /usr/local/share/man/man8
sudo cp config/de.bernhard-baehr.sleepwatcher-20compatibility.plist /Library/LaunchAgents
sudo cp config/rc.* /etc
cd ..
rm -r sleepwatcher_2.2*

# Add bluetooth script to /etc/rc.wakeup (the script requires root)
sudo tee -a /etc/rc.wakeup <<EOF
kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
EOF

# Load the agent to start sleepwatcher
sudo launchctl load /Library/LaunchAgents/de.bernhard-baehr.sleepwatcher-20compatibility.plist

I just sent in my mac to get a host of issues fixed, this bluetooth sleep issue being the most critical that wasn't an obvious easy hardware replacement. It came back with the issue still there, but this fixes it (I used brew.)

I installed sleepwatcher via homebrew, but it won't run automatically when my iMac wakes up. Do I need to take an extra step to make the homebrew app run automatically upon wakeup? Thanks.

Thank you very much. A simple cost-effective solution to a major Bluetooth failing on Mac Yosemite.

@gh91745, you have to add it to your launchd startup files. These instructions are given when you install sleepwatcher via Homebrew:

To have launchd start sleepwatcher at login:
    ln -sfv /usr/local/opt/sleepwatcher/*.plist ~/Library/LaunchAgents

This will load sleepwatcher automatically when you login the first time. To load it immediately, run the following command (also provided during the Homebrew install):

launchctl load ~/Library/LaunchAgents/de.bernhard-baehr.sleepwatcher-20compatibility-localuser.plist

Thanks a lot!!

I'm on macOS Sierra and using homebrew. I tried following the steps here and a few other locations, but ran into isses with the plist files being slightly different and not loading the correct /etc/rc.wakeup file. I modified the script above and got these commands that got things working reliably for me. Hope it helps someone else.

brew install sleepwatcher
sudo touch /etc/rc.sleep
sudo tee -a /etc/rc.wakeup <<EOF
#!/bin/sh
# Sleepwatcher script to get bluetooth working after the mac wakes up
# Got this approach from https://gist.github.com/Tyilo/c92684d277acb62272b5
kextunload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
kextload -b com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport
EOF
sudo chmod +x /etc/rc.wakeup
brew services start sleepwatcher
sudo tee -a /Library/LaunchAgents/de.bernhard-baehr.sleepwatcher-20compatibility-custom.plist <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>de.bernhard-baehr.sleepwatcher</string>
    <key>ProgramArguments</key>
    <array>
        <string>/usr/local/sbin/sleepwatcher</string>
        <string>-V</string>
        <string>-s /etc/rc.sleep</string>
        <string>-w /etc/rc.wakeup</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>KeepAlive</key>
    <true/>
</dict>
</plist>
EOF
sudo launchctl load /Library/LaunchAgents/de.bernhard-baehr.sleepwatcher-20compatibility-custom.plist

Looks like the kextunload commands don't actually work anymore on High Sierra. However, there's a 3rd party command line tool for doing the same thing and it works: https://github.com/toy/blueutil – you can tweak the scripts mentioned here to use blueutil instead, or there's even a full-blown solution (very similar to what we have seen on this page already): https://gist.github.com/ralph-hm/a65840c4f5e439b90170d735a89a863f