Date: Fri, 03 Feb 2023 08:46:28 +0000 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Emmanuel Vadot <manu@bidouilliste.com> Cc: "parv/FreeBSD" <parv.0zero9+freebsd@gmail.com>, freebsd-current@freebsd.org Subject: Re: Could not change brightness anymore with i915kms & acpi_video modules c 202211 Message-ID: <202302030846.3138kSMO006053@critter.freebsd.dk> In-Reply-To: <20230203084017.b1e8dc1f9116d8a55a1c2cfd@bidouilliste.com> References: <CABObuOoUDHrUF6FyTwEXTrnt3ztkoAR4x5vzjcNp7H-4F4XE7A@mail.gmail.com> <CABObuOoik3j_fsM=LciqRC8QrjJAs4o-hBYU_ZDE9wx=WJBBVw@mail.gmail.com> <202302022058.312Kwwj8003814@critter.freebsd.dk> <20230203084017.b1e8dc1f9116d8a55a1c2cfd@bidouilliste.com>
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-------- Emmanuel Vadot writes: > On Thu, 02 Feb 2023 20:58:58 +0000 > "Poul-Henning Kamp" <phk@phk.freebsd.dk> wrote: > > > -------- > > parv/FreeBSD writes: > > > > > > Does backlight(8) works for you? > > > > > > Thanks for the clue. It does! It does ... > > > > > > - I get the same number back via "backlight" without any arguments as > > > what I gave it earlier. There was no reporting of value being > > > subtracted by one; > > > > Sorry for the delay in reporting back. > > > > I consistently read one less back, except for 0 and 100. > > Even 50 ? # backlight brightness: 0 # backlight 50 # backlight brightness: 49 # backlight 25 # backlight brightness: 24 # backlight 75 # backlight brightness: 74 yes > So if you have, let's say brightness at 50%, and you plug an external > monitor, brightness goes up to 100% ? No, plugging and unplugging does not change the backlight. But when the screen saver has kicked in, and I wake it up again, it comes back at 100, (and reads back as 100) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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