Max GPU resolution

Hi. I had new amazing problems with Nano, a black background and no access to the menus that appear in the upper side, neither the icons that appears at the left are displayed, I think it is due to the solution to the Java OpenGL libs problem that I found and describe here: https://devtalk.nvidia.com/default/topic/1052181/jetson-nano/java-on-jetson-nano/2. So I couldn’t try to change the resolution by other way.
I have to try FullHD configuration and a 480x854 configuration for my project, which has to be in vertical mode.
Later I’ll try to find someway in the web to do that. I’ll post the results.