- Home
- Packages
- Forums
- Wiki
- Bugs
- AUR
- Download

# Display Power Management Signaling (简体中文)

From ArchWiki

DPMS (VESA 显示电源管理信号，简称DPMS)是VESA制定的通过显示卡对显示器电源管理的标准。DPMS规定如果一定时间不对计算机进行操作时显示器自动进入节电模式。

## 在X中设定DPMS

Note: As of Xorg 1.8 DPMS is auto detected and enabled if ACPI is also enabled at kernel runtime.

在 `/etc/X11/xorg.conf` 的 `Monitor` 小节写上:

    Option "DPMS" "true"

把下面的配置加入 `ServerLayout` 小节, 必要时改变时间(以分钟计):

    Option "StandbyTime" "10"
    Option "SuspendTime" "20"
    Option "OffTime" "30"

Note: If the "OffTime" option does not work replace it with the following, (change the "blanktime" to "0" to disable screen blanking)

    Option         "BlankTime" "30"

比较新的X推荐使用 `.conf` 文件代替 `xorg.conf`, `/etc/X11/xorg.conf.d/10-monitor.conf` 的一个例子如下：

    Section "Monitor"
        Identifier "LVDS0"
        Option "DPMS" "false"
    EndSection

    Section "ServerLayout"
        Identifier "ServerLayout0"
        Option "BlankTime"  "0"
        Option "StandbyTime" "0"
        Option "SuspendTime" "0"
        Option "OffTime" "0"
    EndSection

## 用xset修改DPMS和屏保设定

可以用官方仓库中xorg-xset提供的`xset`工具关闭屏幕。注意：如果要在shell中关闭显示器，需要在命令前面加上 `sleep 1;` . 例如：

    sleep 1; xset dpms force off

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屏保控制

你可以用xset控制你的屏保:

    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

### 查看当前设置

    $ 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

## 例子

### 关闭DPMS

    xset -dpms

### Disable screen saver blanking

    xset s off

### 关闭DPMS并防止屏幕变为空白

在看电影或幻灯片时有用:

    xset -dpms; xset s off

### 立刻关闭屏幕

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]

Note: If you haven't already read the brief DPMS article linked to below, please skim it to understand how DPMS can be used in the console the same as in X.

### 防止屏幕关闭

可以运行以下命令, 并使其自启动(如添加到 /etc/rc.local):

    $ setterm -blank 0 -powerdown 0

也可以通过下列命令禁止终端清空:

    # 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

Note the use of >> instead of >. 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.

    $ 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的DPMS设置在xscreensaver不起作用

xscreensaver用它自己的DPMS设置。 请看xscreensaver的设置以获取更多信息。

#### xscreensaver DPMS

你可以通过编辑`~/.xscreensaver`以设置xscreensaver的DPMS设置，或者使用xscreensaver-demo.

    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

## See also

- PC Monitor DPMS specification explanation

Retrieved from "https://wiki.archlinux.org/index.php?title=Display_Power_Management_Signaling_(简体中文)&oldid=273046"
Categories:

- X Server (简体中文)
- Power management (简体中文)

## Navigation menu