em28xx pinnacle pctv

lsusb
Bus 002 Device 002: ID eb1a:2870 eMPIA Technology, Inc. Pinnacle PCTV Stick

Linux ubuntu 2.6.35-24-generic #42-Ubuntu SMP Thu Dec 2 02:41:37 UTC 2010 x86_64 GNU/Linux

I'm sorry to disturb, but it's an year I can resolve this question... My pinnacle pctv usb2 dvb-t was working very well with linux once, now

can't make it scans channels... it finds only five type of channels(RETECAPRI and similar cause I'm in italy). i'm using these modules
http://jiemeb.free.fr/pinnacle/

ANY HELP appreciated.