Connecting two HDMI displays

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu, OOWOW, X11

Which version of system do you use? Khadas official images, self built images, or others?

official image

Please describe your issue below:

I’m trying to use dual-monitor setup, with one HDMI display connected to port on device itself and one connected to USBC-HDMI converter.

Both displays work by themselves, I can use either directly connected one or one connected through USBC-HDMI and switch between them using xrandr.

But when I try to enable both at once, system acts as if both were connected - I can, for example, move window to 2nd display but one screen remains blank.

What can I possibly be doing wrong? Is this supposed to work at all?

I checked on my side with two HDMI screens and work well.

  • HDMI screen
  • USB-C to HDMI screen

No need any other setup, it works well when you connect the board to displays.