automatic screen on/off (GNOME-specific), brightness sync, battery limiter
Install https://github.com/jadahl/gnome-monitor-config. I packaged it for NixOS already, but need to submit a pull-request.
Since WLAN button code is used for keyboard attach/detach events first we need to disable it. Open dconf-editor and edit the key /org/gnome/settings-daemon/plugins/media-keys/rfkill-static and remove XF86WLAN from the list:
You MUST log out and log in again after doing it.
After that go to Settings -> Keyboard -> (at the bottom) Keyboard Shortcuts -> View and Customize Shortcuts -> Custom Shortcuts and press +.
- Name: "toggle dualscreen mode" or anything else.
- Command:
/absolute/path/to/this/repo/duo toggle. - Shortcut: press "Set Shortcut..." and attach or detach the keyboard (doesn't matter, it sends the same event).
Press "Add" in the top right corner, close everything and log out and in again. Unlike usual shortcuts, this one doesn't work before logging out.
Brightness control requires root permissions. I prefer to have sudo with a password by default, so I use a hack to have a NOPASSWD sudo for /usr/bin/env which allows to execute any command. Line in /etc/sudoers looks like %wheel ALL=(ALL:ALL) NOPASSWD: /usr/bin/env. On NixOS the relevant part of the config is this:
security.sudo = {
enable = true;
extraRules = [{
commands = [
{
command = "/usr/bin/env";
options = [ "NOPASSWD" ];
}
];
groups = [ "wheel" ];
}];
};
Once the sudo setup is done you can either run duo sync-backlight to sync it once (you may want to bind it to some hotkey) or you can run duo watch-backlight, presumably at login, and it will keep syncing your brightness from the top display to the bottom one.
Requires same sudo setup as for the brightness sync. Most likely you want to run duo bat-limit or duo bat-limit 75 (where 75 is your desired threshold percentage, 80 is used if omited) once at the start of your desktop session.