87.93.107.172: Inserted graphics-switch.sh script.

2011-05-12T09:21:13Z

Inserted graphics-switch.sh script.

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<pre>
#!/bin/bash

PATH=/sbin:/usr/sbin:/usr/local/sbin:/bin:/usr/bin:/usr/local/bin

# periodically checks /home/user/switcheroo.txt for changes
# and uses display-settings to switch to the other graphics card,
# first allowing for safe termination of the user's session.
# NOTE: should be run as root inside a screen or by graphics-switch-daemon
# from init.d.

# vgaswitcheroo location.
switcheroo=/sys/kernel/debug/vgaswitcheroo/switch
# Wait for termination of this before acting.
SESSION="gnome-session"
# Which user has the switcheroo.txt file in their home directory.
U="vermind"
# How often to check for switcheroo.txt changes.
INTERVAL=60

function switch {
if [ -f /etc/init.d/gdm3 ]; then
/etc/init.d/gdm3 stop
else
/etc/init.d/gdm stop
fi
sleep 1
/etc/init.d/display-settings autodetect
sleep 1
if [ -f /etc/init.d/gdm3 ]; then
/etc/init.d/gdm3 start
else
/etc/init.d/gdm start
fi
}

function read_switcheroo {
if [ -n "${target}" ]; then
old=${target}
fi
target=$( cat /home/${U}/switcheroo.txt )
if [ -n "${old}" -a "${target}" != "${old}" ]; then
changed=true
else
unset changed
fi
# Now, if the target is different than what the switch file says
isIntel=$( cat "${switcheroo}" | grep "IGD:+" )
# only switch if not on intel yet
if [ "${target}" == "intel" -a -z "${isIntel}" ]; then
changed=true
else
# either already intel, or nvidia wanted
# only switch if not on nvidia (i.e. on intel)
if [ "${target}" == "nvidia" -a -n "${isIntel}" ]; then
changed=true
else
unset changed
fi
fi
}

function notify_user {
sudo -u "$U" env DISPLAY=:0 notify-send "Scheduled switch to ${target}" \
"Switch will be performed after your session is closed" \
-i system-log-out
}

function checkx {
xrunning=$( ps -ef | awk -v U="$U" -v SESSION="$SESSION" '$1 == U { if ( $8 == SESSION ) print $8}' )
#echo "xrunning=$xrunning"
}

function stuff {
#echo "user=$U interval=$INTERVAL session=$SESSION"

# Actions
while true; do
read_switcheroo
echo "target=$target changed=$changed old=$old"
if [ -z "${changed}" ]; then
sleep ${INTERVAL}
continue;
fi
# changed
notify_user
checkx
while [ -n "${xrunning}" ]; do
sleep ${INTERVAL}
checkx
done
# User session has been closed, switch now
switch "${target}"
sleep ${INTERVAL}
# So we do not switch again too soon in case of errors
done
}

# Do stuff!
stuff
</pre>

Asus-switcheroo graphics-switch.sh - Revision history

87.93.107.172: Inserted graphics-switch.sh script.