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Date:      Mon, 23 May 2022 09:37:45 +0200
From:      Emmanuel Vadot <manu@bidouilliste.com>
To:        Pete Wright <pete@nomadlogic.org>
Cc:        FreeBSD Current <freebsd-current@freebsd.org>
Subject:   Re: no hw.acpi.video.lcd0 with graphics/drm-510-kmod
Message-ID:  <20220523093745.ab74225307d0ec8981849acd@bidouilliste.com>
In-Reply-To: <279458c5-74ce-55ec-9dac-de4a064243a9@nomadlogic.org>
References:  <279458c5-74ce-55ec-9dac-de4a064243a9@nomadlogic.org>

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On Sun, 22 May 2022 09:08:12 -0700
Pete Wright <pete@nomadlogic.org> wrote:

> hello,
> i have a lenovo P43s laptop running current.=A0 i've noticed that since=20
> graphics/drm-510-kmod became available hw.acpi.video.lcd0 ceases to=20
> exist (which makes it impossible to adjust screen brightness).=A0 i've=20
> installed graphics/drm-54-kmod and things work as expected.=A0 previously=
=20
> i was running drm-devel-kmod without issues, so i think it's probably an=
=20
> issue with the 5.10 driver?
>=20
> i can file a bug report for this (or just test out patches here if=20
> that's easier), but wanted to see if anyone here had observed this on=20
> other laptops first.
>=20
> cheers,
> -pete
>=20
> --=20
> Pete Wright
> pete@nomadlogic.org
> @nomadlogicLA
>=20
>=20

 Not sure what's happening as this sysctl is exposed by acpi_video(4)
and not related to drm.
 But you shouldn't need this, backlight(8) should work everywhere once
drm is loaded.

 Cheers,

--=20
Emmanuel Vadot <manu@bidouilliste.com> <manu@FreeBSD.org>



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