Difference between revisions of "Display Power Management Signaling"
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== Setting up DPMS in X == | == Setting up DPMS in X == | ||
| + | |||
{{Note|As of Xorg 1.8 DPMS is auto detected and enabled if ACPI is also enabled at kernel runtime.}} | {{Note|As of Xorg 1.8 DPMS is auto detected and enabled if ACPI is also enabled at kernel runtime.}} | ||
Add the following to a file in {{ic|/etc/X11/xorg.conf.d/}} in the {{ic|Monitor}} section: | Add the following to a file in {{ic|/etc/X11/xorg.conf.d/}} in the {{ic|Monitor}} section: | ||
| Line 35: | Line 36: | ||
EndSection | EndSection | ||
| − | == Modifying DPMS and screensaver settings using xset== | + | == Modifying DPMS and screensaver settings using xset == |
| − | It is possible to turn off your monitor using the | + | |
| − | sleep 1; xset dpms force off | + | It is possible to turn off your monitor using the ''xset'' tool which is provided by the {{Pkg|xorg-xset}} package in the [[official repositories]]. |
| + | {{Note|If using this command manually in a shell you may need to prefix it with {{ic|sleep 1;}} for it to work correctly. For example: | ||
| + | $ sleep 1; xset dpms force off | ||
| + | }} | ||
To control Energy Star (DPMS) features (a timeout value of zero disables the mode): | To control Energy Star (DPMS) features (a timeout value of zero disables the mode): | ||
| − | xset -dpms Energy Star features off | + | $ xset -dpms Energy Star features off |
| − | xset +dpms Energy Star features on | + | $ xset +dpms Energy Star features on |
| − | xset dpms [standby [suspend [off]]] | + | $ xset dpms [standby [suspend [off]]] |
| − | xset dpms force standby | + | $ xset dpms force standby |
| − | xset dpms force suspend | + | $ xset dpms force suspend |
| − | xset dpms force off | + | $ xset dpms force off |
| − | xset dpms force on (also implicitly enables DPMS features) | + | $ xset dpms force on (also implicitly enables DPMS features) |
| + | |||
| + | === xset screen-saver control === | ||
| − | |||
You can use xset to control your screensaver: | You can use xset to control your screensaver: | ||
| − | xset s [timeout [cycle]] | + | $ xset s [timeout [cycle]] |
| − | xset s default | + | $ xset s default |
| − | xset s on | + | $ xset s on |
| − | xset s blank | + | $ xset s blank |
| − | xset s noblank | + | $ xset s noblank |
| − | xset s off | + | $ xset s off |
| − | xset s expose | + | $ xset s expose |
| − | xset s noexpose | + | $ xset s noexpose |
| − | xset s activate | + | $ xset s activate |
| − | xset s reset | + | $ xset s reset |
| − | ===To see your current settings=== | + | === To see your current settings === |
| − | + | ||
| − | + | {{hc|$ xset q| | |
| − | + | ||
| − | + | ... | |
| − | + | ||
| − | + | Screen Saver: | |
| − | + | prefer blanking: yes allow exposures: yes | |
| − | + | timeout: 600 cycle: 600 | |
| − | + | DPMS (Energy Star): | |
| − | + | Standby: 600 Suspend: 600 Off: 600 | |
| − | + | DPMS is Enabled | |
| + | Monitor is On | ||
| + | }} | ||
| + | |||
| + | == Examples == | ||
| + | |||
| + | === Turn off DPMS === | ||
| − | + | $ xset -dpms | |
| − | === | + | === Disable screen saver blanking === |
| − | |||
| − | + | $ xset s off | |
| − | xset s off | ||
=== Disable DPMS and prevent screen from blanking === | === Disable DPMS and prevent screen from blanking === | ||
| + | |||
Useful when watching movies or slideshows: | Useful when watching movies or slideshows: | ||
| − | xset -dpms; xset s off | + | $ xset -dpms; xset s off |
| + | |||
| + | === Turn off screen immediately === | ||
| − | |||
If you leave your computer, you do not need to wait for the timeout you set that the display turns off. Simply enforce it by using the xset command. | If you leave your computer, you do not need to wait for the timeout you set that the display turns off. Simply enforce it by using the xset command. | ||
| − | xset dpms force off | + | $ xset dpms force off |
| + | |||
| + | === Put screen into standby === | ||
| + | |||
| + | $ xset dpms force standby | ||
| − | ===Put screen into | + | === Put screen into suspend === |
| − | |||
| − | + | $ xset dpms force suspend | |
| − | xset dpms force suspend | ||
| − | ===Change Blank time from 5 min to 1 hour=== | + | === Change Blank time from 5 min to 1 hour === |
| − | xset s 3600 3600 | + | |
| + | $ xset s 3600 3600 | ||
| + | |||
| + | === xset display.sh === | ||
| − | |||
You could also copy this script: | You could also copy this script: | ||
{{hc|/usr/local/bin/display.sh|<nowiki> | {{hc|/usr/local/bin/display.sh|<nowiki> | ||
| Line 107: | Line 122: | ||
case $1 in | case $1 in | ||
| − | + | standby|suspend|off) | |
| − | + | xset dpms force $1 | |
| − | + | ;; | |
| − | + | *) | |
| − | + | echo "Usage: $0 standby|suspend|off" | |
| − | + | ;; | |
| − | esac | + | esac |
</nowiki>}} | </nowiki>}} | ||
| Line 119: | Line 134: | ||
== DPMS interaction in a Linux console with setterm == | == DPMS interaction in a Linux console with setterm == | ||
| + | |||
The ''setterm'' utility issues terminal recognized escape codes to alter the terminal. Essentially it just writes/echos the terminal sequences to the current terminal device, whether that be in screen, a remote ssh terminal, console mode, serial consoles, etc. | The ''setterm'' utility issues terminal recognized escape codes to alter the terminal. Essentially it just writes/echos the terminal sequences to the current terminal device, whether that be in screen, a remote ssh terminal, console mode, serial consoles, etc. | ||
| Line 131: | Line 147: | ||
=== Prevent screen from turning off === | === Prevent screen from turning off === | ||
| − | You can run this command | + | You can run this command: |
| − | |||
$ setterm -blank 0 -powerdown 0 | $ setterm -blank 0 -powerdown 0 | ||
Alternatively you can disable console blanking permanently using the following command: | Alternatively you can disable console blanking permanently using the following command: | ||
| − | # | + | # echo -ne "\033[9;0]" >> /etc/issue |
=== Pipe the output to a cat to see the escapes === | === Pipe the output to a cat to see the escapes === | ||
| + | |||
$ setterm -powerdown 2>&1 | exec cat -v 2>&1 | sed "s/\\^\\[/\\\\033/g" | $ setterm -powerdown 2>&1 | exec cat -v 2>&1 | sed "s/\\^\\[/\\\\033/g" | ||
| − | ===Pipe the escapes to any tty (with write/append perms) to modify that terminal=== | + | === Pipe the escapes to any tty (with write/append perms) to modify that terminal === |
| − | + | ||
$ setterm -powerdown 0 >> /dev/tty3 | $ setterm -powerdown 0 >> /dev/tty3 | ||
| − | ====Bash loop to set ttys 0-256==== | + | {{Note|{{ic|>>}} is used instead of {{ic|>}}. For permission issues using ''sudo'' in a script or something, you can use the '''tee''' program to append the output of setterm to the tty device, which tty's let appending sometimes but not writing.}} |
| + | |||
| + | ==== Bash loop to set ttys 0-256 ==== | ||
| + | |||
$ for i in {0..256}; do setterm -powerdown 0 >> /dev/tty$i; done; unset i; | $ for i in {0..256}; do setterm -powerdown 0 >> /dev/tty$i; done; unset i; | ||
| Line 156: | Line 175: | ||
==== xscreensaver DPMS ==== | ==== xscreensaver DPMS ==== | ||
| − | You can configure xscreensaver's DPMS settings manually by editing your {{ic|~/.xscreensaver}} file as below, or using the xscreensaver-demo | + | |
| + | You can configure xscreensaver's DPMS settings manually by editing your {{ic|~/.xscreensaver}} file as below, or using the xscreensaver-demo GUI. | ||
{{bc| | {{bc| | ||
timeout: 1:00:00 | timeout: 1:00:00 | ||
| Line 173: | Line 193: | ||
}} | }} | ||
| − | ==See also== | + | == See also == |
| + | |||
* [http://webpages.charter.net/dperr/dpms.htm PC Monitor DPMS specification explanation] | * [http://webpages.charter.net/dperr/dpms.htm PC Monitor DPMS specification explanation] | ||
Revision as of 10:15, 1 January 2014
zh-CN:Display Power Management Signaling DPMS (Display Power Management Signaling) is a technology that allows power saving behaviour of monitors when the computer is not in use.
For details on each Timeout, see the Description section here.
Contents
Setting up DPMS in X
Add the following to a file in /etc/X11/xorg.conf.d/ in the Monitor section:
Option "DPMS" "true"
Add the following to the ServerLayout section, change the times (in minutes) as necessary:
Option "StandbyTime" "10" Option "SuspendTime" "20" Option "OffTime" "30"
An example file /etc/X11/xorg.conf.d/10-monitor.conf could look like this.
Section "Monitor"
Identifier "LVDS0"
Option "DPMS" "false"
EndSection
Section "ServerLayout"
Identifier "ServerLayout0"
Option "StandbyTime" "0"
Option "SuspendTime" "0"
Option "OffTime" "0"
EndSection
Modifying DPMS and screensaver settings using xset
It is possible to turn off your monitor using the xset tool which is provided by the xorg-xset package in the official repositories.
To control Energy Star (DPMS) features (a timeout value of zero disables the mode):
$ xset -dpms Energy Star features off $ xset +dpms Energy Star features on $ xset dpms [standby [suspend [off]]] $ xset dpms force standby $ xset dpms force suspend $ xset dpms force off $ xset dpms force on (also implicitly enables DPMS features)
xset screen-saver control
You can use xset to control your screensaver:
$ xset s [timeout [cycle]] $ xset s default $ xset s on $ xset s blank $ xset s noblank $ xset s off $ xset s expose $ xset s noexpose $ xset s activate $ xset s reset
To see your current settings
$ xset q
... Screen Saver: prefer blanking: yes allow exposures: yes timeout: 600 cycle: 600 DPMS (Energy Star): Standby: 600 Suspend: 600 Off: 600 DPMS is Enabled Monitor is On
Examples
Turn off DPMS
$ xset -dpms
Disable screen saver blanking
$ xset s off
Disable DPMS and prevent screen from blanking
Useful when watching movies or slideshows:
$ xset -dpms; xset s off
Turn off screen immediately
If you leave your computer, you do not need to wait for the timeout you set that the display turns off. Simply enforce it by using the xset command.
$ xset dpms force off
Put screen into standby
$ xset dpms force standby
Put screen into suspend
$ xset dpms force suspend
Change Blank time from 5 min to 1 hour
$ xset s 3600 3600
xset display.sh
You could also copy this script:
/usr/local/bin/display.sh
#!/bin/bash
# Small script to set display into standby, suspend or off mode
# 20060301-Joffer
case $1 in
standby|suspend|off)
xset dpms force $1
;;
*)
echo "Usage: $0 standby|suspend|off"
;;
esac
Make it executable (chmod u+x /usr/local/bin/display.sh) and just run display.sh off. For the latter to work you need to include /usr/local/bin into your path.
DPMS interaction in a Linux console with setterm
The setterm utility issues terminal recognized escape codes to alter the terminal. Essentially it just writes/echos the terminal sequences to the current terminal device, whether that be in screen, a remote ssh terminal, console mode, serial consoles, etc.
setterm Syntax: (0 disables)
setterm -blank [0-60|force|poke] setterm -powersave [on|vsync|hsync|powerdown|off] setterm -powerdown [0-60]
Prevent screen from turning off
You can run this command:
$ setterm -blank 0 -powerdown 0
Alternatively you can disable console blanking permanently using the following command:
# echo -ne "\033[9;0]" >> /etc/issue
Pipe the output to a cat to see the escapes
$ setterm -powerdown 2>&1 | exec cat -v 2>&1 | sed "s/\\^\\[/\\\\033/g"
Pipe the escapes to any tty (with write/append perms) to modify that terminal
$ setterm -powerdown 0 >> /dev/tty3
Bash loop to set ttys 0-256
$ for i in {0..256}; do setterm -powerdown 0 >> /dev/tty$i; done; unset i;
Troubleshooting
xset DPMS settings do not work with xscreensaver
xscreensaver uses its own DPMS settings. See the settings for xscreensaver for more information.
xscreensaver DPMS
You can configure xscreensaver's DPMS settings manually by editing your ~/.xscreensaver file as below, or using the xscreensaver-demo GUI.
timeout: 1:00:00 cycle: 0:05:00 lock: False lockTimeout: 0:00:00 passwdTimeout: 0:00:30 fade: True unfade: False fadeSeconds: 0:00:03 fadeTicks: 20 dpmsEnabled: True dpmsStandby: 2:00:00 dpmsSuspend: 2:00:00 dpmsOff: 4:00:00