[Cialug] 5.14 -> 6.4

[Charles Dunbar]

I had a similar issue with Manjaro, brightness controls didn't do anything
- I think the fix for me was some kernel arguments on boot.

Looking at my commented out lines in /etc/default/grub for
GRUB_CMDLINE_LINUX, it looks like I previously had acpi_backlight=none,
which I switched to acpi_backlight=native. I also added
i915.enable_dpcd_backlight=0, but not sure if that helped or not.

Charles

On Thu, Aug 1, 2024 at 1:50 PM L. V. Lammert <lvl at omnitec.net> wrote:

> Just upgraded my laptop, which installed the 6.4 kernel.
>
> Unfortunately, it has broken the LCD screen brightness control - full
> bright only.
>
> Might anyone know what change would affect that, and possibly a way to get
> brightness functionality back?
>
>         TIA!
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