I often use my tab in an upside down landscape view when charging port is at the top). I typically do this if i need to charge it and use it at the same time. The cable, imho, is simply more manageable. After a reboot, I noticed two things:
1. the lock screen only displays in portrait mode and won't rotate.
2. once unlocked the tab display will rotate 270 degrees, every way but upside down landscape
3. the hard button behavior has changed. a long press offers a power off menu, whereas before it displayed recent apps
I'm not aware of any settings i changed, nor did i add, remove, or alter any apps.
the device has been rooted for several months running the stock rom without a glitch.
Any suggeations would be deeply appreciated.