linux: added links to the repositories of display control

wiki/linux/display_control.md

@@ -0,0 +1,14 @@
+# Display Control
+
+Display control describes the process of controlling the display with means other than the hardware
+buttons.
+
+## DDC
+
+DDC - short for Display Data Channel - is a specific way to control the display.
+On [Linux](/wiki/linux.md)-based Systems this can be achieved by using the
+[`ddcutil`](https://github.com/rockowitz/ddcutil) command line interface that can be found in the
+package of the same name.
+For a graphical user interface [`ddcui`](https://github.com/rockowitz/ddcui) can be used.
+After installation it is possible that the system needs to be restarted due to the i2c-dev kernel
+module.