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Date:      Thu, 01 Oct 2020 03:09:30 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 227869] Backlight brightness media keys are not working on Lenovo B570e (although backlight brightness can be controlled via intel_backlight)
Message-ID:  <bug-227869-227-iYGdGbIi7d@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-227869-227@https.bugs.freebsd.org/bugzilla/>
References:  <bug-227869-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D227869

Alexey Dokuchaev <danfe@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |danfe@FreeBSD.org
             Status|New                         |Open

--- Comment #5 from Alexey Dokuchaev <danfe@FreeBSD.org> ---
> is there any chance to see this exposed to sysctl in the future without n=
eeding
> this kludge? [...] I have tried loading different acpi_* kernel modules, =
and
> none of them work.
On the Lenovo L470 here and fairly recent -CURRENT I can control brightness
with sysctl(8) after loading acpi_video(4) module.  Also, as of base r360025
brightness change events are visible via devd(8):

> # sysctl hw.acpi.video.lcd0.brightness=3D85
> hw.acpi.video.lcd0.brightness: 60 -> 85
>=20
> $ cat /var/run/devd.pipe
>=20
> !system=3DACPI subsystem=3DVideo type=3Dbrightness notify=3D85
Your report was against 11.1-RELEASE which is no longer supported.  Could y=
ou
please update to contemporary, supported FreeBSD version and reconduct your
tests?

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