Gettalong15: /* Automatic Display Switching on Resume */

2010-05-31T17:25:37Z

‎Automatic Display Switching on Resume

Gettalong15: â†Created page with '= Automatic Display Switching on Resume = I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is...'

2010-05-31T17:10:22Z

â†Created page with '= Automatic Display Switching on Resume = I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is...'

New page

= Automatic Display Switching on Resume =

I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is connected. However, gnome-power-manager and gnome-display-manager can't do this correctly currently and therefore I have written a script to automate this.

The following script should be saved in the file {{/etc/pm/sleep.d/10_activate_monitor}} and does the following on resume:

* If any external monitor is attached, activate it (the first monitor from the list {{EXTERNALS}}), and disable the internal monitor if the lid is closed.
* If no external monitor is attached, activate the internal monitor.

<pre>
#!/bin/bash

. /usr/share/acpi-support/power-funcs

INTERNAL="LVDS1"
EXTERNALS="VGA1 HDMI1 DP1 HDMI2 HDMI3 DP2 DP3"

case "$1" in
thaw|resume)
for x in /tmp/.X11-unix/*; do
displaynum=`echo $x | sed s#/tmp/.X11-unix/X##`
getXuser;

grep -q closed /proc/acpi/button/lid/*/state
LID_CLOSED=$?

if [ x"$XAUTHORITY" != x"" ]; then
export DISPLAY=":$displaynum"

INTERNAL_STATE=$(xrandr | grep ^$INTERNAL | grep " con" | sed "s/.*connected//" | sed "s/ //" | sed "s/ .*//g")
for I in $EXTERNALS; do
EXTERNAL=$I
EXTERNAL_STATE=$(xrandr | grep ^$EXTERNAL | grep " con" | sed "s/.*connected//" | sed "s/ //" | sed "s/ .*//g")
if [ ! $ -z "$EXTERNAL_STATE" $ ]; then break; fi
done

logger -t "pm-utils-custom-display" "$INTERAL -- $INTERNAL_STATE :: $EXTERNAL -- $EXTERNAL_STATE"
if [ ! $ -z "$EXTERNAL_STATE" $ ]; then
logger -t "pm-utils-custom-display" "Activating external display"
if [ $LID_CLOSED = 0 ]; then xrandr --output $INTERNAL --off; fi
xrandr --output $EXTERNAL --auto
else
logger -t "pm-utils-custom-display" "Activating internal display"
xrandr --output $INTERNAL --auto
xrandr --output $EXTERNAL --off
fi
fi
done
;;
*) exit $NA
;;
esac

exit 0
</pre>

@@ Line 3: / Line 3: @@
 I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is connected. However, gnome-power-manager and gnome-display-manager can't do this correctly currently and therefore I have written a script to automate this.
-The following script should be saved in the file {{/etc/pm/sleep.d/10_activate_monitor}} and does the following on resume:
+The following script should be saved in the file <tt>/etc/pm/sleep.d/10_activate_monitor</tt> and does the following on resume:
-* If any external monitor is attached, activate it (the first monitor from the list {{EXTERNALS}}), and disable the internal monitor if the lid is closed.
+* If any external monitor is attached, activate it (the first monitor from the list <tt>EXTERNALS</tt>), and disable the internal monitor if the lid is closed.
 * If no external monitor is attached, activate the internal monitor.

Automatic Display Switching on Resume - Revision history

Gettalong15: /* Automatic Display Switching on Resume */

Gettalong15: â†Created page with '= Automatic Display Switching on Resume = I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is...'

Gettalong15: â†Created page with '= Automatic Display Switching on Resume = I have a T410s and a Mini Dock 3 Plus and wanted Ubuntu 10.04 to automatically switch to the external monitor on resume if it is...'