swmon

Small command-line tool to switch monitor inputs from command line

Installation

1. git clone https://github.com/cr1901/swmon
2. cargo install --path .

I do not provide a crates.io release at this time.

Intended Usage

1. Run swmon list to get a table of monitors attached to your system that can speak via Display Data Channel (DDC). Here's an example from my current system:

   $ swmon list
   No.   Backend   Display ID                Manufacturer ID   Model Name
   0     winapi    Generic PnP Monitor       ?                 acer
   2     nvapi     GF108GL/2147881094:Lvds   ACR               VG220Q

   Monitors that don't speak DDC protocols are excluded from the table; in my example, monitor 1 is missing. swmon list may take several seconds trying to talk to monitors that cannot speak via DDC.

2. After you've figured out which monitor you want to switch, run swmon switch -m [No. from list] [input]. To get a list of possible valid values for input, run swmon switch -h. The input names should be self-explanatory (and are based on the VESA MCCS spec for Feature Code 0x60.

3. Enjoy the 15-30 seconds you saved by not having to push buttons on your monitor to switch inputs :).

GUI

An egui GUI is also provided, based on the swmon list and swmon switch commands as described above. It can be run with using the swmon-gui command:

Future Work

• Report which input is currently active.
• Report monitors which don't speak DDC protocols in swmon list.
• Make -m optional and switch using the first (valid) input.