After looking carefully at /var/log/syslog, I found that alsa was in conflict with the bttv module. I unloaded alsa, then reloaded dvb_bt8xx, and scan worked (didn't find any channel, though, but that's another matter). Thus, my solution was to load dvb_bt8xx at the begining of my /etc/modules file and reboot. Udev created automatically the /dev/dvb/adapter0 folder, with the devices demux0, dvr0, frontend0 and net0 (no video0 or audio0 - I hope that's not a problem) I still don't have video or audio, but i hope I'll have after I get a valid channels.conf file. Now, where do I find/how do I generate a channels.conf file for Echostar7/9? (DishNetwork) Regards, Luis.