acpi-lid-switch.sh

gistfile1.txt

#!/bin/sh

## This script is intended to be ran by ACPID daemon on lid switch events with the goal of disabling/re-enabling
# local tochpad on Chromebook trogdor + display on lid close/open. There is an issue with the touchpad that causes 
# spurious input while the lid is closed and not suspeded + XFCE/upowers method of screen blanking causes issues 
# with resuming session after opening the keyboard flap. 

LOGFILE=/dev/null

## This is all being done so root can get display # and session cookie of the foreground users console
FG_USER=$(stat -c%U /dev/tty$(fgconsole))
FG_UID=$(id -u ${FG_USER})
FG_TTY="tty$(fgconsole)"
FG_XORG_PID=$(pgrep -xt ${FG_TTY} Xorg)
FG_XDISPLAY=:$(lsof -aUp "${FG_XORG_PID}" | sed '\|.*X11-unix/X\([0-9]\{1,\}\) .*|!d;s//\1/;q')

echo "$1" >> ${LOGFILE}
echo $(whoami) >> ${LOGFILE}
echo FG_USER=${FG_USER} >> ${LOGFILE}
echo FG_UID=${FG_UID} >> ${LOGFILE}
echo FG_TTY=${FG_TTY} >> ${LOGFILE}
echo FG_XORG_PID=${FG_XORG_PID} >> ${LOGFILE}
echo FG_XDISPLAY=${FG_XDISPLAY} >> ${LOGFILE}

export DISPLAY=$FG_XDISPLAY

## Just guessing some possible display managers to locate Xorg session cookie, not tested with other DMs
DMS="gdm lightdm"

for DM in ${DMS}; do

  if [ -e /run/user/${FG_UID}/${DM}/Xauthority ]; then

    export XAUTHORITY=/run/user/${FG_UID}/${DM}/Xauthority
    echo DISPLAY_MANAGER=${DM} >> ${LOGFILE}

  fi

done

state=$(echo "$1" | cut -d " " -f 3)

case "$state" in
    close)
        # Disable touchpads/screen on lid close to prevent phantom touches
        echo "Disabing touch devices..." >> ${LOGFILE}
        /usr/bin/synclient touchpadoff=1 >> ${LOGFILE}
        /usr/bin/xinput disable "pointer:Google Inc. Hammer" >> ${LOGFILE} 2>&1
        #/usr/bin/xinput disable "pointer:gt7375p 27C6:0E51" >> ${LOGFILE} 2>&1
        /usr/bin/brightnessctl --save
        /usr/bin/brightnessctl s 0
        ;;
    open)
        # Re-enable the touch devices after opening the lid
        echo "Enabling touch devices..." >> ${LOGFILE}
	      /usr/bin/xinput enable "pointer:Google Inc. Hammer" >> ${LOGFILE} 2>&1
        #/usr/bin/xinput enable "pointer:gt7375p 27C6:0E51" >> ${LOGFILE} 2>&1
	      /usr/bin/synclient touchpadoff=0 >> ${LOGFILE}
        /usr/bin/brightnessctl --restore
        ;;
    *)
        # panic: not a state I know about!
        echo "PANIC STATE" >> ${LOGFILE}
esac

echo "" >> ${LOGFILE}