Comment 10 for bug 524822

It's a group issue. /dev/dvb was owned by root:video. I changed the group to mythtv and am able to use the digital tuner. I wasn't able to open the analog tuner to add it.

# groups mythtv
mythtv : mythtv dialout cdrom audio video

# ps aux | grep ^mythtv
mythtv 2402 1.2 4.4 281592 22224 ? Sl 23:29 0:02 /usr/bin/mythbackend --logfile /var/log/mythtv/mythbackend.log --user mythtv

*No /etc/default/mythtv-backend

# cat /etc/init/mythtv-backend.conf
# MythTV Backend service

description "MythTV Backend"
author "Mario Limonciello <email address hidden>"

start on (local-filesystems and net-device-up IFACE=lo)
stop on starting shutdown

#expect fork
respawn

script
        USER=mythtv
        ARGS="--logfile /var/log/mythtv/mythbackend.log --user $USER"
        test -f /etc/default/mythtv-backend && . /etc/default/mythtv-backend || true
        /usr/bin/mythbackend $ARGS
end script