Dears,
I used to burned a ubuntu 18.04 to my rapsberry pi2Bwith a 7-inch screen and I fould it drives the screen under 800*480 perfectly but the system is heavy to 2B, at the same time , the system ubuntu-mate 16.04 runs well on 2B but did not drive the screen resolution well as the issue always stated by others. So may somebody has any idea on how to let mate16.04 to perform the 7-inch screen as perfect as it is under ubuntu18.04 by transfer some necessary and related files or works?