Today I configured my Jetson Nano (Jetpack 4.2.1) with SDK Manager and updated it with sudo apt-get update and upgrade. The Jetson starts with resolution 640x480 and then reboots to 1280x720, my screen resolution is 1366x768 and I can’t change to that resolution with “xrandr …”. Every time you restart the Jetson Nano the same thing happens.
Could you share the kernel log and xorg.0.log?
The same thing goes to mine.
Please share the log.