Date: Thu, 29 Sep 2016 08:14:49 -0400 From: Ken Moore <ken@ixsystems.com> To: <freebsd-x11@freebsd.org> Subject: Re: Nvidia drivers screen brightness and back light Message-ID: <0b100cba-4702-46d7-8bb3-cf553a1a750b@ixsystems.com> In-Reply-To: <CALM2mEniWsaNaFoVAchcE_ajc=g=v3C9vD-VGVYmsbdy9zaR9w@mail.gmail.com> References: <CALM2mEn6xCz6xxGJm=MniBzosYeOU6rCRFmePdcJGVv6YjRkVA@mail.gmail.com> <201609280627.u8S6RfXq002303@sdf.org> <CALM2mEnEC2n8OiLJKAcJdBfAfbbrdzZzn3yYwQv1v0asdUSjDA@mail.gmail.com> <201609280718.u8S7IP85011693@sdf.org> <CALM2mEnbJD6ATHEjqu%2BqdjwFtrTPi%2Bvx=-=R6zMMt_YEXdL5jw@mail.gmail.com> <201609290624.u8T6Ohd6028658@sdf.org> <CALM2mE=-iVcTpiQm8=5aEc0LGWxWDhEisLmQ=a5_8x5tvEOkhQ@mail.gmail.com> <201609290858.u8T8wokS002825@sdf.org> <CALM2mEniWsaNaFoVAchcE_ajc=g=v3C9vD-VGVYmsbdy9zaR9w@mail.gmail.com>
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xbrightness and redshift do not touch the LCD levels within your monitor at=20= all - they both do software-level brightness control through modifying the=20= X server settings for colors and such (which is why they trample all over=20 each other if you try to run both). If you want hardware-level brightness=20 control there are a couple options: "xbacklight" is a utility similar to xbrightness, but only does=20 acpi/hardware brightness. It only works on monitors which support the ACPI=20= power levels and such though, so it might not work for you.=20 You can tweak the sysctl on your system to turn down the monitor brightnees=20= directly (if supported by your monitor - most laptops are supported but=20 desktop monitors are hit-or-hiss). `sysctl hw. | grep brightness` should show you which one(s) are available=20 on your system. "pc-sysconfig" is a tool on PC-BSD/TrueOS systems which is a front-end to=20 the sysctl method for controlling screen brightness (as well as a few other=20= things like putting your system into suspend mode), and allows the user=20 make the changes as needed (sysctls can usually only be changed by root).=20 Run "pc-sysconfig -h" to see the options for reading/changing the screen=20 brightness levels as you need. On Thursday, September 29, 2016 7:32:12 AM EDT, blubee blubeeme wrote: > I am not looking for a screensaver; I am looking for a way to dim the > brightness of the screen. Even when I use the xrandr or redshift to dim the= > brightness, let's say i turn it all the way down to 0 or something like > that. > > If I turn off the lights in the room, I can still see the led behind the > screen lighting up the four corners of the screen. > > Not to mention that xset command you referenced me earlier doesn't work for= > even turning off the monitor. > > btw, I use i3lock -c 000000 to try to get a black screen as well but again,= > the lights are still there. > > On Thu, Sep 29, 2016 at 4:58 PM, Scott Bennett <bennett@sdf.org> wrote: > >> blubee blubeeme <gurenchan@gmail.com> wrote: >> ... --=20 ~~ Ken Moore ~~ TrueOS/iXsystems
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