[Bug 279184] acpi_video: hw.acpi.video.lcd0.brightness not working in 14.0-RELEASE

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 04 Jul 2024 05:44:03 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=279184

Emmanuel Vadot <manu@freebsd.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |Works As Intended
                 CC|                            |manu@freebsd.org
             Status|New                         |Closed

--- Comment #2 from Emmanuel Vadot <manu@freebsd.org> ---
This is due to drm exposing backlight interface via backlight(9).
Before this the backlight hardware was "free" so the acpi_video(4) kernel
module could use it, now that we hook the backlight part of drm into
backlight(9) the acpi_video(4) module cannot use the hardware anymore.
Long story short, don't use the sysctl anymore but use backlight(8).

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