Manjaro arm on Amlogic Tv box?

Hi, i manage to install lastest armbian s922x whitout succes GitHub - ophub/amlogic-s9xxx-armbian: Armbian for Amlogic s9xxx tv box. Support a311d, s922x, s905x3, s905x2, s912, s905d, s905x, s905w, s905, etc. including install to EMMC and update related functions., but all the load process was in 2560*1440 on my screen. There is a way to add this resolution on your distro ?