Display Brightness

[linuxcrazy2017]

Please fix that if it is a bug.

[Jerry3904]

https://dl.dropboxusercontent.com/

The file was not present so I deleted the link for security reasons.

[asqwerth]

April 2017 post:

Great. I installed that and I can set the display brightness now. Problem solved. Thanks a lot.

I assume xbacklight worked for you in MX16.

MX17:

installed MX 17 yesterday. Facing the same problem on it. I am not able to save the brightness level set in the last login. It gets set to maximum level every time I log in. I didn't find this problem on other distros like Ubuntu. Please suggest a solution for it....Please fix that if it is a bug.

Does that mean xbacklight is not in the MX17 repo? Or that you installed it and it doesn't work in MX17?

[kmathern]

April 2017 post:

Great. I installed that and I can set the display brightness now. Problem solved. Thanks a lot.

I assume xbacklight worked for you in MX16.

MX17:

installed MX 17 yesterday. Facing the same problem on it. I am not able to save the brightness level set in the last login. It gets set to maximum level every time I log in. I didn't find this problem on other distros like Ubuntu. Please suggest a solution for it....Please fix that if it is a bug.

Does that mean xbacklight is not in the MX17 repo? Or that you installed it and it doesn't work in MX17?

Xbacklight is in the Debian Stretch repo: https://packages.debian.org/stretch/xbacklight. It's not installed by default in MX-17 but I don't think it was installed by default in MX-16 either.

[linuxcrazy2017]

I am required to set the brightness level every time I log in. I just want MX 17 to remember the brightness level set in the previous login. Please suggest a solution.

[dolphin_oracle]

I am required to set the brightness level every time I log in. I just want MX 17 to remember the brightness level set in the previous login. Please suggest a solution.

we don't have one at this time. we will look into it.

[ChrisUK]

I am required to set the brightness level every time I log in. I just want MX 17 to remember the brightness level set in the previous login. Please suggest a solution.

For all non-systemd distros, I use the following:

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#!/bin/sh
#Place in /etc/pm/sleep.d/
case "$1" in
    resume|thaw)
        echo 40 > /sys/class/backlight/nv_backlight/brightness
        ;;
esac

Just save it as something like brightness and copy to

Code: Select all

/etc/pm/sleep.d/

and make it executable (chmod +x or do it from permissions tab in Thunar).

You'll need to edit it so it reflects your system (mine is using an Nvidia card - hence the /sys/class/backlight/nv_backlight/brightness) - also you'll want 50 instead of 40.

BTW, this is for resume from sleep, for boot you'll need to copy the echo 40 > /sys/class/backlight/nv_backlight/brightness line to

Code: Select all

/etc/rc.local 

as well

[dolphin_oracle]

for those that are wondering, systemd takes care of brightness in most other distros.

you can test it on MX with the systemd boot option in the "Advanced" grub menus.

[linuxcrazy2017]

Can we not get this issue sorted out in MX 17 non-systemd mode?

[zebedeeboss]

Just write your own simple script that runs at start up containing

Code: Select all

xrandr --output DP-4 --brightness 0.60

Where you change DP-4 for your monitor output and 0.6 to what ever brightness you like.

I don't know if this will last through a suspend and resume on a laptop though ?

Regards Zeb...