When I invert my display (xrandr -o inverted
), the display goes black. This is in contrast to orienting the display to left (xrandr -o left
), to right (xrandr -o right
) or to normal (xrandr -o normal
).
When I try to orient the display to normal from this black/inverted state (xrandr -o normal
) directly, the display remains black. When I change to another virtual console (Ctrl
Alt
F2
) and then change back (Ctrl
Alt
F7
), the display appears again (inverted), but does not orient to normal on executing the command xrandr -o normal
.
What's going on and how could this obstinate blackout behaviour be addressed?
I'm running Ubuntu 15.04 with Unity.