Workstations with a dual-monitor setup have some issues with deciding which monitor to use as the primary monitor. This will cause some issues with some games, applications, and issues with screen alignment.

In order to fix these issues, Josh Kilmer (jkilmer) (srjek) has written some scripts to aid in the process of setup.

# Begin Josh Kilmer's (jkilmer)(srjek) dualmonitor script
xrandr --output DVI-I-3 --off  # Turn off secondary monitor to fix window snapping alignment issue
xrandr --auto  # For connected but disabled outputs, this will enable them using their preferred mode
xrandr --output DVI-I-3 --left-of DVI-I-2  # Set secondary monitor to be on the left (DVI-3)
xrandr --output DVI-I-2 --primary  # Set primary monitor to the on on the right (DVI-2)
# End Josh Kilmer's (jkilmer)(srjek) dualmonitor script

Please note that this has only been testing on the HP workstations running Arch, and have not been extensively testing on single-monitor setups and the like.

— Chase Lee 2013/04/27 02:19

In order to automate this process,(instead of making users do this themselves) we can put this script in the corresponding LXDM configurations files. The LXDM files are run at specific times during the login and logout process. Appending these commands will automatically setup the dual-monitor layout.

The following are copies of the modified LXDM configurations files as of April 27, 2013: Note that these settings should not be applied to single-monitor setups, as this may result in unintended results.

#!/bin/sh
#
# Note: this is a sample and will not be run as is.

#!/bin/sh
#
# Note: this is a sample and will not be run as is.
#loltask > /dev/null &
thunar --daemon &
#if [ ! -d "/home/$USER/Steam" ]
#then
#	mkdir /home/$USER/Steam
#	echo "/home/$USER/Steam created on $HOSTNAME" >> /var/log/test  
#fi
#sudo /usr/local/bin/steamMount $USER

#!/bin/sh
#
# Note: this is a sample and will not be run as is.

#!/bin/sh
#
# Note: this is a sample and will not be run as is.
if [ "$USER" == "acmguest" ]
then
	umount /opt/acmguest/.local/share/Steam
	sudo /usr/local/sbin/guestd restart
fi
if [ "$USER" == "lol" ]
then
	umount /opt/lol/.local/share/Steam
else
	umount /home/$USER/.local/share/Steam
fi
killall --user $USER -TERM
# Begin Josh Kilmer's (jkilmer)(srjek) dualmonitor script
xrandr --output DVI-I-3 --off
# End Josh Kilmer's (jkilmer)(srjek) dualmonitor script

#!/bin/sh
#
# Note: this is a sample and will not be run as is.
#!/bin/sh
#
# Note: this is a sample and will not be run as is.
#loltask > /dev/null &
#mount -B /opt/Steam /home/$USER/Steam
#if [ "$?" -ne "0" ]
#then
#	mkdir /home/$USER/Steam
#	mount -B /opt/Steam /home/$USER/Steam
#fi
if [ "$USER" == "lol" ]
then
	mount -B /opt/Steamlocal /opt/lol/.local/share/Steam
	chown -R lol:users /opt/lol/.local/share/Steam
else
	if [ "$USER" == "acmguest" ]
	then
		mount -B /opt/Steamlocal /opt/acmguest/.local/share/Steam
		chown -R acmguest:users /opt/acmguest/.local/share/Steam
	else
		mount -B /opt/Steamlocal /home/$USER/.local/share/Steam

		if [ "$?" -ne "0" ]
		then
			mkdir /home/$USER/.local/share/Steam
			mount -B /opt/Steamlocal /home/$USER/.local/share/Steam
		fi
		chown -R $USER:users /home/$USER/.local/share/Steam
	fi
fi
# Begin Josh Kilmer's (jkilmer)(srjek) dualmonitor script
xrandr --output DVI-I-3 --off
xrandr --auto
xrandr --output DVI-I-3 --left-of DVI-I-2
xrandr --output DVI-I-2 --primary
# End Josh Kilmer's (jkilmer)(srjek) dualmonitor script

#!/bin/bash

# use bash for "exec -l", howto run login shell by /bin/sh ?

if [ $# -eq 1 -a -n "$1" ]; then
	LXSESSION=$1
else
# default session
	LXSESSION=/usr/bin/startlxde
fi

[ -f /etc/profile ] && . /etc/profile
[ -f ~/.profile ] && . ~/.profile
[ -f /etc/xprofile ] && . /etc/xprofile
[ -f ~/.xprofile ] && . ~/.xprofile

if [ -f /etc/X11/xinit/xinitrc-common ]; then
# fedora
	. /etc/X11/xinit/xinitrc-common
	if ! [ -z "$XDG_SESSION_COOKIE" ]; then
		CK_XINIT_SESSION=
	elif [ -x /usr/bin/ck-launch-session -a -z "$CK_XINIT_SESSION" ]; then
		CK_XINIT_SESSION="/usr/bin/ck-launch-session"
	fi
	exec -l $SHELL -c "$CK_XINIT_SESSION \"$LXSESSION\""
elif [ -x /etc/X11/xinit/Xsession ]; then
# fedora
	exec /etc/X11/xinit/Xsession "$LXSESSION"
elif [ -x /etc/X11/Xsession ]; then
# mandriva, debian, ubuntu
	exec /etc/X11/Xsession "$LXSESSION"
elif [ -x /etc/X11/xinit/xinitrc ]; then
#suse
	export WINDOWMANAGER=$LXSESSION
	exec -l $SHELL -c /etc/X11/xinit/xinitrc
else
# unknown, user should custom /etc/lxdm/xinitrc self
	if [ -x /etc/lxdm/xinitrc ]; then
		. /etc/lxdm/xinitrc
	fi
	if ! [ -z "$XDG_SESSION_COOKIE" ]; then
		CK_XINIT_SESSION=
	elif [ -x /usr/bin/ck-launch-session ]; then
		CK_XINIT_SESSION="/usr/bin/ck-launch-session"
	fi
	exec -l $SHELL -c "$CK_XINIT_SESSION \"$LXSESSION\""
fi

#!/bin/sh
#
# Note: this is a sample and will not be run as is.

Note the only files that were modified/related to this fix is:

• PostLogout
• PreLogin

Other files are documented solely for the purpose of completeness.

Other improvements can possibly be made, but that's for another time and day…

— Chase Lee 2013/04/27 02:19