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SRANDRD(1) Manual Page

NAME

srandrd - simple randr daemon

SYNOPSIS

srandrd [OPTIONS] COMMAND|list

list

List outputs and EDIDs and terminate

OPTIONS

-h

Print help and exit

-n

Don’t fork to background

-V

Show version information and exit

-v

Verbose output

-e

Emit connected devices at startup

-1

One-shot mode; exit after emitting connected devices (implies -e)

DESCRIPTION

srandrd(1) is a tool that executes a command on xrandr output change events, i.e. if a monitor is plugged or unplugged. By default srandrd forks to background and exits if the xserver exits.

The following variables are defined:

SRANDRD_OUTPUT defines the name of the graphics card output / port that triggered the event, e.g. DVI-0.

SRANDRD_EVENT defines the event that happened. It’s one of the following:

[connected|disconnected|unknown]

SRANDRD_EDID defines a semi-unique identifier of the monitor that has been connected. The identifier is usually not unique (the same) within a monitor series. The identifier has this format:

VENDOR[4]PRODUCT[4]SERIAL[8]

SRANDRD_SCREENID defines the xinerama screen id (if available). The identifier has this format:

XINERAMA_SCREENID[1..n]

EXAMPLE

An example usage could be

srandrd display_handler

where display_handler being the following script

#!/bin/sh

case "${SRANDRD_OUTPUT} ${SRANDRD_EVENT}" in
  "DVI-0 connected") xrandr --output DVI-0 --auto --right-of LVDS;;
  "VGA-0 connected") xrandr --output VGA-0 --auto --left-of LVDS;;
esac

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