One of the things I’m working on at Red Hat is HDR support. HDR is inherently linked to luminance (brightness, but ignoring human perception) which makes it an important parameter for us that we would like to be in control of. One reason is rather stupid. Most external HDR displays refuse to let the user control the luminance in their on-screen-display (OSD) if the display is in HDR mode. Why? Good question. Read my previous blog post.| swick's blog
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. This new series might cause regressions on a different set of even older laptop models then the one affected by the 6.1…| hansdegoede.livejournal.com
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! These tests show that as a result of the current 6.1 changes quite a few laptop models will end up with an empty /sys/class/backlight,…| hansdegoede.livejournal.com
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. The most likely…| hansdegoede.livejournal.com
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. Specifically if you have a Logitech MX5000, G15, G15 v2 or G510 and you want the LCD panel to show…| hansdegoede.livejournal.com