[LightDM] display-setup-script not having desired effect

[Michael Aldridge]

Greetings,

I am trying to figure out why my display setup and session setup scripts
aren't having an effect.  I run a lab where users are free to choose any
one of several different sessions, so we configure the displays from
lightdm.  I am trying to troubleshoot why my script is no longer
configuring the screens.  I have provided below the script and the
config file that is in use and greatly appreciate any suggestions for
how to troubleshoot this issue.

screen script:

#!/bin/sh

for i in 1 2; do read -r mon$i x$i y$i; done <<EOF
$(xrandr | awk '/^Screen /{ next; }; /connected/{ disp=$1; next; }; /+/{
match($0, "[0-9]+x[0-9]+( |*)\+",ret); sub("x", " ", ret[0]); print disp
" " ret[0] }' 2>/dev/null)
EOF

[ -z "$mon2" ] && xrandr --output "$mon1" --auto --primary && exit

if [ "$x1" -gt "$x2" ]; then
	xrandr --output "$mon1" --auto --primary
	xrandr --output "$mon2" --auto --pos "${x1}x$(( y1 - y2 ))"
else
	xrandr --output "$mon2" --auto --primary
	xrandr --output "$mon1" --auto --pos "${x2}x$(( y2 - y1 ))"
fi


local lightdm config file:

# This overrides the default configuration of lightdm
[SeatDefaults]
# Set the greeter
greeter-session=lightdm-webkit-greeter
display-setup-script=/usr/local/bin/fixScreens
session-setup-script=/usr/local/bin/fixScreens


Once again any suggestions are appreciated here.

--Michael

--
Michael Aldridge
Network Administrator
Collegium V Honors College
The University of Texas at Dallas