Nvidia drivers screen brightness and back light

[blubee blubeeme]

I already checked out the sysctl info, that's why I was sending this email.
I wrote this in my first email: Here is the acpi information for this
machine : http://paste2.org/LUcIwtzn

I know FreeBSD isn't linux but at least on linux I could control the back
light by first issuing some set PCI commands and then I could write to some
files and the screen's brightness would actually dim or get brighter.

I am writing to the mailing list after exhausting pretty much all my
abilities to find a solution.

Is there a way to control the screen brightness at the hardware level,
xrandr and redshift aren't really working well; they sort of tint the
screen and that's really destroying my eyes.

On Thu, Sep 29, 2016 at 8:14 PM, Ken Moore <ken at ixsystems.com> wrote:

> xbrightness and redshift do not touch the LCD levels within your monitor
> at all - they both do software-level brightness control through modifying
> the X server settings for colors and such (which is why they trample all
> over each other if you try to run both). If you want hardware-level
> brightness control there are a couple options:
>
> "xbacklight" is a utility similar to xbrightness, but only does
> acpi/hardware brightness. It only works on monitors which support the ACPI
> power levels and such though, so it might not work for you.
> You can tweak the sysctl on your system to turn down the monitor
> brightnees directly (if supported by your monitor - most laptops are
> supported but desktop monitors are hit-or-hiss).
> `sysctl hw. | grep brightness` should show you which one(s) are available
> on your system.
>
> "pc-sysconfig" is a tool on PC-BSD/TrueOS systems which is a front-end to
> the sysctl method for controlling screen brightness (as well as a few other
> things like putting your system into suspend mode), and allows the user
> make the changes as needed (sysctls can usually only be changed by root).
> Run "pc-sysconfig -h" to see the options for reading/changing the screen
> 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 at sdf.org> wrote:
>>
>> blubee blubeeme <gurenchan at gmail.com> wrote:
>>>  ...
>>>
>>
> --
> ~~ Ken Moore ~~
> TrueOS/iXsystems
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