From LinuxMCE wiki
Hauppauge WinTV-NOVA-T-500 is a TV tuner card for digital terrestrial television (DVB-T). The card uses a dual tuner, allowing the user to watch one DVB-T digital TV channel while recording another or record two digital TV programmes at once under MythTV or with VDR record all the channels on either of two Mux's (Multiplex of channels) while watching any channel on either Mux.
The 'Diversity' variant of the T500 should be avoided as there are no drivers for this model.
If your card is working with no driver compilation (if you're in any doubt, then you probably didn't compile it yourself), then you should add...
options dvb-usb-dib0700 force_lna_activation=1
...to the options. This turns on the onboard amplifier and give you a better signal strength.
- For 0810 or before, add it to /etc/modprobe.d/options
- For 1004, add it to /etc/modprobe.d/options.conf (create the file if it doesn't exist).
It would appear that these cards are once again suffering from the infamous "warm restart" problem (when used with 1004). Whenever you restart your core, do a "cold restart" i.e. shutdown and disconnect the power supply for 30 seconds at least. If you do not do this, the card doesn't wake up properly and won't be able to scan or get channel locks.