Permissions
-----------
Add to /etc/security/console.perms:

# Mythtv permissions
<dvb>=/dev/dvb/adapter?/*
<console> 0660 /dev/lirc0 0660 root.uucp
<console> 0660 <dvb> 0660 root.root

Reboot. This will allow the mythtv user (or whoever logs into the console)
to access the card, rather than restricting it to root only.