Unable to rotate monitor in kde 3.2
I would like to be able to rotate my monitor 90 degrees sometimes.
However in KDE control center > Peripherals > Display the section for orientation has all the options disabled except for "Normal"
How can I enable the other settings to allow me to rotate the screen?
If relevant my configuration is Mandrake 10 / KDE 3.2 / XFree86 4.3 / ati9800xt video card running with latest ati driver / iiyama au5131 monitor.