Hi, I'm wondering if anybody can shine any light on an issue that I am having at the moment?
I have a raspberry pi that connects to a non-standard display. By non-standard, I mean that the display is not an ordinary display but it does support HDMI 1920x1080 @ 60hz.
Previously we have used the CM1 which is working fine with the device. I thought I would be able to reuse the config.txt from this image (Raspbian Jessie Lite) with the new image (Raspbian Stretch Lite) but it will not output anything on the disaply. It is worth noting that if I use a standard monitor then it displays fine.
I have used a video test instrument to verify the video timings and the two devices appear to be identical. The config.txt is not overly complex. These are the main parts of the HDMI configuration:
hdmi_cvt 1920 1080 60
I know that the display does work as it works fine with the CM1 image. Does anybody have any ideas as to why it may not be working with the CM3? Any help or advice would be much appreciated.