Xubuntu - screen flipped upside down
I was trying to fix a different problem when suddenly my screen switched upside down - rotated 180 degrees. How can I fix this. I'm on Xubuntu 14.10 and a Dell Latitude e6420.
Even easier : xrandr -o normal
Somehow, the screen settings (xrandr) must have changed to "inverted" while you were trying to fix things.
You can fix it by running the command:
xrandr --output <screen_name> --rotate normal
or, (easyer) by simply loging out and back in :)