setsound

#!/bin/bash

# RHEL8 lenovo p50 laptop running with my poly headset
# once I power on the headset, pulse audio sets it as the default audio device
#
# then after a reboot, if the poly headset is off, pulse audio still has it set as default, no sound

# run this script after logging in to reset to the internal speakers

# parse through output from pacmd list-sinks  looking for a $target device name and set it as the default sink
#   index: 1
#	name: <alsa_output.usb-Plantronics_Poly_BT600_2b75408a6ed54605a234ea452553ecc0-00.analog-stereo>

# in control panel audio set the default device, then run the following to see which is set.
# pacmd list-sinks | grep -e 'name:' -e 'index:'

# mine looked like :
# 	name: <alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi___ucm0005.hw_sofhdadsp__sink>
# but the ucm005 number part can vary, so come up with a regex to match
target="HiFi___.*.hw_sofhdadsp__sink"
IFS=$'\n';    # need ifs so pacmd output does not break on spaces
count=1

# then we loop through the pulseaudio sinks looking for a matching name. when its found, set the default to $count

for i in $(pacmd list-sinks | grep -e 'name:'); do
    echo $i | egrep  $target > /dev/null
    if [ "$?" == "0" ]; then
        echo "Found internal speaker at index $count == $i "
        echo "setting default sound device to $count"
        pacmd set-default-sink $count
    else
        count=$((count+1))
    fi
done