iPad Mini retina screen orientation problem still not solved?!

I have also been having the screen orientation problem on my iPad Mini retina. I cannot find out what the problem is or how to solve it. The switch does not help it and neither does changing the settings. Nor does rebooting. Also, the volume on the retina is definitely lower than the ordinal iPad Mini. If I had known this I would've kept the original. I am on IOS 7.1.2.