As mentioned in my previous blog post, I have written a new patch series for 6.2 to try to avoid having multiple entries in /sys/class/backlight for a single panel again ( Read more... )

I have received quite a few test reports in response to my previous blog post. Many thanks to everyone who has run the tests and send me their results ( Read more... )

I have landed a large(ish) refactor of the ACPI/x86 backlight detection code in the kernel for 6.1. I have been very careful to try and not break things but there is a special group of laptops where the ability to control the backlight brightness may disappear because of this ( Read more... )

A while ago as a spin-off of my project to improve support for Logitech wireless keyboards and mice I have also done some work on improving support for (Gaming) keyboards with a builtin LCD panel ( Read more... )

About 10 weeks ago I bought a GPDwin. I was working on improving Fedora on Cherry Trail based as a side project and I found out about this cute little machine via a blogpost from Adrien Plazas ( Read more... )

I've been debugging various backlight brightness problems lately, and I've learned a lot in the process. First lets take a look at how all the bits fit together. There are 3 parts involved in changing the brightness:

1. Detecting brightness up / down keypresses
2. Processing the keypresses
3. Controlling the actual backlight

Detecting brightness up / down ( Read more... )