I am using the A8_2.30 BSP I tested a 3530 and a 3730 based platform using the VRFB feature and Surface Manager=1. All the angles 0(0 deg),1(90 deg),2(180 deg) and 4(270 deg) work as expected on my 480x272 display by setting the appropriate “Angle” registry setting . I then tried Surface Manager=0 (standard flat, no VRFB) again all angles worked as expected.
I then tried on an AM335x based platform, which does not have VRFB hardware (Surface Manager=0 is the only option). Only 0 works.