Because the topic changed completely I started a new question with my resent problem, getting a monitor to work with Colibri iMX6DL and Carrier Board Iris. You can find the related question following the below link.
After working the hole day on the issue, I am not a bit wiser.
To my hardware config:
The Colibri iMX6DL ist connected to a Carrier Board Iris via SO-DIMM and Colibri DVI/VGA FFC
connector. A Monitor ist pluged in via DVI to Display-port cable into the DVI-I interface(I tried with another DVI to DVI cable to another monitor and it did not work either).
The Iris Board is connected to the host system via USB and RS232. The ethernet-port is connected to a local LAN. At the USB-port I pluged in a USB-hub with a keyboard.
I am running the Colibri-iMX6_LXDE-Image 2.7b4 20171004 as distributed on the Toradex website. To use the ToradexEasyInstaller I had to connect with VNC-Viewer, because on the DVI-I was no output, either.
When I have read the Iris Datasheet, from my point of view it sounded like the DVI signal is passed throw from the FFC to the DVI-I interface. Therefore I have no idea where to start configureing the device to get a DVI output.
My second thought was to access the OS via VNC, but when I try on the default IP “192.168.11.1” I get the message “Connection rejected by the computer” (translated from german message!). So it looks like there is no VNC-server running or it is not accepting the connection. The usb0 interface on the device is up and configured with the default IP. It is also responding to a ping-request.
I would appreciate an answer either if there is something more to configure on the Hardware or the Software to get the DVI running, or if there is a way to access the device with VNC when the OS (Linux) is running.
If any more information is needed, please let me know, so I can provide the data.