#ddccontrol

[getpagespeed]

Control your monitor in CentOS/RHEL 8

Control your monitor in CentOS/RHEL 8

The ability to adjust brightness of your display using the keyboard of your laptop is a given thing.

However, the same does not apply to desktop machines. Do you want to easily adjust brightness and other settings of your external monitor without touching it? If so, read on.

You can (almost) fully manage your display thanks to the DDC protocol. It allows your operating system to talk to the…

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[knoffhoff]

How to change monitor settings of Samsung SyncMaster 193P in Ubuntu Linux.

Samsung offers software for Windows but not Linux. This monitor has no buttons to control the settings (how stupid is that) and needs to be controlled via I2C lines of the monitor cable (VGA). Might also work for Samsung 173.

# install the software for linux sudo bash apt-get install ddccontrol # insert the kernel module modprobe i2c-dev # check the configuration ddccontrol -p # auto adjust: ddccontrol -p -r 0x1e -w 1 # change brightness, maximum is 100 ddccontrol -p -r 0x10 -w 40 # change contrast ddccontrol -p -r 0x12 -w 50