Welcome to DOFBOT-Ultra repository
5.Use 7-inch display
Introduction to RDK X5 board
Notes on using a 7-inch screen with RDK
Because the resolution of the 7-inch screen is 1024*600, which is not a common resolution, you need to modify the configuration file before using it. If you do not modify it, the display will be incomplete.
Remotely log in or connect a keyboard and mouse to the RDK motherboard, open the terminal
Enter the following command:
sudo nano /etc/x11/xorg.conf.d/1-resolution.conf
Modify Modes to 1024x600, as shown below

After modification, press Ctrl+S on the keyboard to save, and then press Ctrl+X to exit the editor
Then enter the following command to reboot
xxxxxxxxxxsudo reboot