you might have received a bad screen, some say it could be the cable also but unlikely usually it's just a funky digitizer, i would say return it and try again, and be sure the housing the lcd sit's in is clean with no plastic burr's on the edges
and if you bought the cheapest one you could find, then ya sometimes those are factory 2nd's or previous returns some sellers are honest about it and some are not.
and for the record on the k2's or t2's there is no "software" glitch that's going to make the lcd screen do bizarre actions on it's own, it's not sirius/xm doing it
if it is "freezing" or giving software error messages that is different, with the exception of the lcd digitizer completely failing.