Re: Pixelbook 2017 display backlight with 7.1.x

On 7/23/26 03:27, Matthew Obets wrote:
> After upgrading to kernel 7.1 the display backlight brightness
> adjustment stopped working in KDE on my Google PixelBook 2017.
> 
> Neither the keyboard brightness keys nor the brightness slider change
> the display's brightness.
> 
> I'm currently running kernel version 7.1.4-202.fc44.x86_64

Thx for the report. There was a earlier similar one about a device like
yours:
https://lore.kernel.org/all/CALcz8n5nB%3DH8CZza-Pw%3D%[email protected]/
It didn't get anywhere as the git bisection didn't work out.

And another one about a Pixelbook
https://gitlab.freedesktop.org/drm/i915/kernel/-/work_items/16507

Is that a device like yours? Then this should help:
https://gitlab.freedesktop.org/drm/i915/kernel/-/commit/a411ea4a87162898d2a0547fdfb721ddb7626be3

It will hopefully land in mainline this week. Could you maybe try that?

If that doesn't help: Could you try latest 7.2-rc, as there is another
fix that always went into 7.2-rc1.

Ciao, Thorsten
> Please let me know if you need any additional information.
> 
> Operating System: Ultramarine Linux 44
> KDE Plasma Version: 6.7.3
> KDE Frameworks Version: 6.28.0
> Qt Version: 6.11.1
> Kernel Version: 7.1.4-202.fc44.x86_64 (64-bit)
> Graphics Platform: Wayland
> Processors: 4 × Intel® Core™ i5-7Y57 CPU @ 1.20GHz
> Memory: 8 GiB of RAM (7.6 GiB usable)
> Graphics Processor: Intel® HD Graphics 615
> Manufacturer: Google
> Product Name: Eve
> System Version: 1.0