![]() Then mark it executable with chmod a+x bright Bash Script #!/bin/bash Rather than plugging in a brightness level for xrandr you can use this bash script to adjust the brightness up or down in steps.Ĭopy bash script below to a file called bright It is available on Ubuntu: apt install ddcci-dkms GNOME will use that interface to set the brightness, you can set the brightness without an additional UI, or the terminal. This ddcci driver integrates all ddcci-capable monitors into sysfs, including /sys/class/backlight/.īecause i.e. In case you want to reduce the brightness past the lowest level allowed on monitor's OSD or ddcutil getvcp 10, you may try to uniformly reduce RGB levels with ddcutil getvcp 16/18/1A. It also has a GUI called ddcui (screenshot here). You can run them as root or install the i2c-tools and add your user to the group i2c to do it without root ( explanation). It is available in Ubuntu ( man page) via apt install ddcutil. (Based on Infinitum's comment in comment (but note and extra c in the name.) Tool 2: ddcutil / ddcuiĪn alternative to ddccontrol, made at a time when ddccontrol was rather unmaintained. gksudo gddccontrol or pkexec gddccontrol for the GUI tool.sudo ddccontrol for the command line tool.Gddccontrol is a graphical user interface for it: apt install gddccontrol ![]() It is available in Ubuntu ( man page) via apt install ddccontrol. ddcci-backlight (driver to be picked up by GNOME and others)ĭdccontrol (note the double cc) is a tool to control the settings of many monitors in exactly the same way their on-screen display / hardware buttons control them.Hardware control solution (no software dimming)īy now there are 2 softwares to do hardware dimming:
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