ThinOS 9.x does NOT support 800x600 resolution.
I have customers that use 12" monitors in their industrial environment.  These 12" monitors natively run 800x600 resolution.  When connected to a 3040 thin client running 9.3 2205, they will display a blank/black image.  The monitor acts as if it is getting and displaying a good image (power led is solid green and not blinking). I also recreated this same issue on 9.1.1136 and got similar results. Is it possible ThinOS does not support 800x600 resolution? Below is exactly what I tested: Is it possible ThinOS does not support 800x600 resolution?
Does ThinOS 9.3 support 800x600 resolution?