Thank you for your reply. However, none of these issues address the initial problem of the HDMI output being out of sync until the power saver blanks the screen during startup and shutdown, as indicated in my photos. We have already determined that this is not due to a ‘bug’ in the dtb, because other EDGE-V SBCs do not exhibit any problems.
Granted, while working on this, it was discovered that this problem does not happen if the USB-C port is also being used. However, it is not an acceptable workaround to require a both outputs to be connected, just to have HDMI. Clearly, this SBC has defective hardware. I agree that it is difficult to make sense of this behavior. But, I am not an engineer. I’m sure that Khadas would never intentionally sell defective products, which makes it important for engineers to examine and investigate the cause of this defect, whether it is due to a individual component or contamination during the SMC assembly.
Considering that I have invested ~$220 in the EDGE-V and accessories, I think it is only reasonable to have a fully functional product. All things considered, I would like to request instructions for exchanging this defective product with a replacement.