This crate provides definitions to get and set brightness on Linux.
This crate interacts with devices found at /sys/class/backlight. This means that the
ddcci-backlight
kernel driver is required to control external displays (via DDC/CI).
Setting brightness is attempted using D-Bus and logind, which requires
systemd 243 or newer.
If this fails because the method is not available, the desired brightness is written to
/sys/class/backlight/$DEVICE/brightness, which requires permission (udev rules can help with
that).
```rust use brightness::Brightness; use futures::TryStreamExt;
async fn showbrightness() -> Result<(), brightness::Error> { brightness::brightnessdevices().tryforeach(|dev| async move { let name = dev.device_name().await?; let value = dev.get().await?; println!("Brightness of device {} is {}%", name, value); Ok(()) }).await } ```
All contributions shall be licensed under the 0BSD license.