====== ddccontrol DDC/CI ======

  apt install ddccontrol i2c-tools
  modprobe i2c-dev
  
např. manuální ovládání jasu
  ddccontrol dev:/dev/i2c-5 -r 0x10 -w 50


  apt install gddccontrol
  
[[https://unix.stackexchange.com/questions/189675/is-there-a-way-to-adjusts-the-brightness-of-the-monitor]]
[[https://gitlab.com/ddcci-driver-linux/ddcci-driver-linux]]

[[https://blog.tcharles.fr/ddc-ci-screen-control-on-linux/]]