The issue has also been discussed here: http://forum.xda-developers.com/show...&postcount=619
Entering the operator's PIN works OK, but trying to unlock the screen with my PIN fails because it is not possible to enter any numbers.
The only way to unlock the phone is to lock and unlock the screen again.
Screen after booting.
Screen after entering the operator's PIN. Please note that it is now not possible to enter any numbers.
Maybe some could post this in [ROM][official] HTC One X CyanogenMod 11.0 nightlies + M-releases or suggest help.