Not working on linux.

**I'm on linux and my code as below ::**

brightness.set(0.5).then(() => {
console.log('Changed brightness to o.5');
}).catch(err => {
console.log(err);
})

getting Error: **No backlight device found**.
Thanks in advance.

Reproduce the reported brightness.set(0.5) call on Linux and inspect how the package discovers backlight devices. The issue does not name a file, distribution, hardware, or test, so first identify the Linux entry point and the conditions producing “No backlight device found.” Done means the reported setup can change brightness or the failure is clearly documented.

Written by the indexing model from the issue text.