display-visor

This script, and related hooks, help updating the Xorg monitor configuration when dealing with multiple monitors.
It is useful for desktop environments and window managers (e.g., i3wm) that don't handle this.

This fork mainly adapts the original script to my work laptop and docking station, and fixes minor bugs.

How it works

When executed, it checks the available and connected display outputs and sets the optimal resolution for each (as determined by xrandr). The script then waits for a signal to restart the procedure.

At the moment two outputs are defined: eDP-1 and DP-2-2. For now, layout configuration is hard-coded. I am hoping to make this more dynamic.

How to use it

Usage: display-visor [-f] [-i] [-l [switch]]

	-i, --i3	Test for i3wm instance.
                         For avoiding conflict with multiple environments.
	-l, --lid	Check laptop lid status.
                         Ignored/Assumed closed if not given. 
                         It is possible to specify switch. Defaults to 'LID0'
                         If unsure, look under /proc/acpi/button/lid/...
	-v, --version	Print version info.

Start:

Simply set the script to start upon login.

i3wm config example:

exec --no-startup-id display-visor -f -l

Signal:

The script waits for a RTMIN+5 real-time signal. This can be sent with pkill like so:

pkill -x -RTMIN+5 display-visor

Events:

Some default event signallers are included.

udev - A hotplug rule for when cables are (dis)connected.
acpid - A lid switch event action. Useful when -l argument is used. [1]
systemd-sleep - A wake-up hook. [2]

Installation

The original script can be installed on Arch Linux through the AUR as display-visor.

Or you can manually install it with:

$ sudo make (un)install

Dependencies

xorg-xrandr
acpid(for lid events)

Notes

[1] Remember to restart acpid service for this to take effect. [2] Please see Issue #8

Credits: codingtony

pviotti / display-visor