iiyama ProLite E2783QSU Ubuntu gamma xrandr startup suspend resume persist

Settings

Monitor:

• Brightness: 45
• Luminace: 80
• Color (RGB):  70:75:100

Ubuntu:

• Find correct port:
  • xrandr --query | grep ' connected'
  • In my case it's "DP-1-2"
• xrandr --output DP-1-2 --gamma 0.72:0.70:0.60
  • (new setting: 0.83:0.87:0.69)

Persist

Update: the easiest way to work in every case (startup, suspend, ...) is to put it into a cronjob executed every minute:

• crontab -e

  • # Xrandr for Iiyama Gamma
    * * * * *       DISPLAY=:0 XAUTHORITY=/home/klemens/.Xauthority xrandr --output DP-1-2 --gamma 0.72:0.70:0.60

Old Stuff

Startup

Create script

• cd ~
• mkdir bin
• vi bin/iiyama_gamma.sh

  • #!/bin/sh
    
    # sleep, otherwise gamma will be set, but shortly overrules by something else
    sleep 1
    xrandr --output DP-1-1 --gamma 0.72:0.70:0.60
    

• chmod 755 bin/iiyama_gamma.sh

Add to startup programs

• Launch Ubuntu/Gnome "Startup Programs" or "gnome-session-properties" from the command line
• Click "Add"
  • Name: Monitor gamma
  • Command: /home/klemens/bin/iiyama_gamma.sh

Note: .xprofile did not work, as it is called to early in the process. The correct settings appear for a short time, but are lost shortly after.

Reapply after suspend

• sudo vi /lib/systemd/system-sleep/iiyama_gamma

  • #!/bin/sh
    
    case $1/$2 in
      post/*)
        # Place your post suspend (resume) commands here, or `exit 0` if no post suspend action required
        export DISPLAY=:0
        export XAUTHORITY=/home/klemens/.Xauthority
        xrandr --output DP-1-1 --gamma 0.72:0.70:0.60
    
        # Debugging stuff
        #echo "Waking up from $2..."    
        #sleep 1
        #date >> /tmp/resume.txt
        #echo $DISPLAY >> /tmp/resume.txt
        #echo $XAUTHORITY >> /tmp/resume.txt
        ;;
    esac

• chmod 755 /lib/systemd/system-sleep/iiyama_gamma