bluetoothctl “Waiting to connect to bluetoothd…” in udev rule script

Hi everyone,

I'm writing some scripts to automate fixing some issues with PulseAudio, Bluetooth, and A2DP. I've found some useful examples online, and I have a script that works when I run it manually. However, when udev kicks off the rule, I get the error in $subject, which I imagine means that bluetoothctl can't connect to bluetoothd. I also tried using hcitool, but that doesn't fix my bluetooth issues.

I tried looking at the code for bluetoothctl, and it seems like it's using dbus in the background. If that's the case, I would think that setting XDG_RUNTIME_DIR, XAUTHORITY and DISPLAY should be enough.

I originally posted the question here: https://superuser.com/questions/
1245940/bluetoothctl-waiting-to-connect-to-bluetoothd-in-udev-rule- script

Here are the scripts I have, which I believe should work with any bluetooth headset as long as there's only 1 pulseaudio instance running and only 1 headset connected:

/etc/udev/rules.d/80-bt-headset.rules
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ACTION=="add", SUBSYSTEM=="bluetooth", RUN+="/usr/local/bin/a2dp-fix- wrapper"
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/usr/local/bin/a2dp-fix-wrapper
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#!/bin/bash -x
PID=$(pgrep pulseaudio)
USER=$(grep -z USER= /proc/$PID/environ | sed 's/.*=//') USER_ID=$(id -u $USER)
HOME=$(echo $(getent passwd $USER )| cut -d : -f 6)

export XDG_RUNTIME_DIR=/run/user/$USER_ID
export XAUTHORITY=$HOME/.Xauthority
export DISPLAY=:0
export PULSE_RUNTIME_PATH=$XDG_RUNTIME_DIR/pulse/

sleep 5

sudo -u $USER -E /usr/local/bin/a2dp-fix &> /udev_output.txt
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/usr/local/bin/a2dp-fix
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#!/bin/bash -x
bt_device_addr=$(pacmd list-cards | grep -i 'name:.*bluez_card' | sed -E 's/.*<?bluez_card\.([A-Z0-9_]+)>?/\1/') device_mac=$(echo $bt_device_addr | sed 's/_/:/g')

a2dp_available=$(pacmd list-cards | grep -A30 bluez | grep "A2DP Sink" | sed -E 's/.* available: ([a-z]+)\)/\1/g')

if [[ "$a2dp_available" == "no" ]]
then
echo -e "connect $device_mac\nquit" | bluetoothctl sleep 5
pacmd set-card-profile bluez_card.$bt_device_addr off pacmd set-card-profile bluez_card.$bt_device_addr a2dp_sink pacmd set-default-sink bluez_sink.$bt_device_addr.a2dp_sink
fi
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The following things work:
* running /usr/local/bin/a2dp-fix as current user
* running sudo /usr/local/bin/a2dp-fix-wrapper

Any help would be greatly appreciated!