Language Selection

English French German Italian Portuguese Spanish

Linux backlight control

Filed under
Linux
Hardware
Software

Backlight control is one of those things that you'd think would be simple, but ha ha this is computing so of course it's an utter disaster and everything is a huge mess. There's three main classes of backlight control in the x86 world, all of which have drawbacks:

* ACPI specifies a mechanism for backlight control, and the majority of modern machines implement it. It has the advantage that the brightness query interface is generally aware of anything else in the system which may have changed the brightness, so it's unlikely to get out of sync with reality if the platform tries to do something odd like change the backlight itself in response to an ambient light sensor or some other event. The main drawback is that there's typically a fairly small number of available backlight values, usually somewhere between 8 and 20.

* A platform-specific mechanism.

rest here




More in Tux Machines

Android Leftovers

A short critique of Stallmanism

I like Stallman and tend to agree with him often: regarding software, or other politics. This article tries to constructively criticize some parts of the free software movement's ideology, which I collectively refer to as "Stallmanism" (only as pun). It is not an attempt at a personal attack on Stallman, and by reading further you will probably see my politics are very far from that: I coined the term Stallmanism simply because he is at the center of the movement and himself a primary source of the ideas I am critiquing. Read more

Google may unveil merged Android and Chrome OS, dubbed Andromeda, at event

If you thought Google’s October 4 event — where the firm is rumored to launch two smartphones, Google Home, Daydream VR, Chromecast Ultra, and Wi-Fi Routers — wasn’t packed enough, think again. It has been a long time coming, but Google may finally offer a peak at Andromeda, an operating system that sees the merger of Android and Chrome OS. Andromeda is the code name for the long-rumored merger, and Android Police says it have been sitting on a rumor that Google may demo the OS in October. What made the company share it now? A tweet from Hiroshi Lockheimer, senior vice president of Android, Chrome OS, and Google Play at Google. Read more

KDE Leftovers