I have a strange problem: On I.mx6 (with yocto Rocko) X11 is included and I try to rotate the screen with
xrandr --output "DISP3 BG" --rotate left/right/normal/inverted
left/right/normal works fine. But when I rotate to 180° with the option "inverted" the screen is shifted to the right. So that a small part of the right side of the screen isn't visible and on the left side the screen is black.
xrandr (version 1.5) shows no error, at least xrandr -q shows:
Screen 0: minimum 240 x 240, current 800 x 480, maximum 8192 x 8192
DISP3 BG connected primary 800x480+0+0 inverted (normal left inverted right x axis y axis) 0mm x mm
where could I start to find a solution for that problem? or do you have any idea how to avoid my problem? Hope that anybody else solved something similar.