OK. Now I have discuss with the Android developers, and know the reason why you see 1024*600.|
1. v1601 version now is really use the laster display structure with different buffer for LCD and HDMI, 1024*600 for LCD (buffer 1) and 720P for HDMI by default (buffer 2). So now HDMI is not scaled by 1024*600, it is a independent 720P (also you can change to 1080P in the source code).
2. But it set the LCD as the master display device in v1601, so when you check the display resolution under command line, it will output the information of the master display LCD not the HDMI. So it make you confused.
3. We can modify the DTS file from the source code to set the HDMI to the master device, and also set to 1080P.
We will change the HDMI to the master display device @720P. And in future try to provide a interface in the Setting to change the resolution.