How to Set HDMI resolution

Only for Linux 4.9 image, mainline kernel image can use a more common way!

Tere are 2 ways to set the HDMI resolution:

  • Setup via configuration file
  • Setup via desktop application (Only for desktop image)

Edit file /boot/env.txt to set the resolution.

  • Set hdmi_autodetect=no
  • Set hdmi node, e.g. hdmi=1080p60hz
  • Save the file

Reboot to take effect.

  • Find HDMI Resolution application in the list of system applications.

gnome-HDMI-application

  • Click to open it.

  • Select resolution.

gnome-HDMI-setting

Choose a resolution you want, then click OK,

gnome-HDMI-save

The system will automatically log out and the resolution setting will take effect.