Tvheadend

A while ago I modified the Debian init script to suit my setup with 3 Sundtek DVB-C devices. Sometimes it takes a while before all devices become ready. This script checks if all devices are ready.

In /etc/default/tvheadend

# this value I added myself:
WAIT_FOR_ADAPTERS="0 1 2" 

# this value is already there
TVH_DELAY=15

In /etc/init.d/tvheadend

Replace

[ ! -z "$TVH_DELAY" ] && sleep $TVH_DELAY

With

        for t in $WAIT_FOR_ADAPTERS
        do
          WAITED=0
          while [ ! -c "/dev/dvb/adapter${t}/frontend0" ] && [ $WAITED -le $TVH_DELAY ]; do
            sleep 1s && log_daemon_msg "`date`: TVHeadend Init; tuner device ${t} is not ready. Waiting 1 second..." "$NAME" 
            WAITED=$((WAITED + 1))
          done
          [ ! -c "/dev/dvb/adapter${t}/frontend0" ] && log_daemon_msg "`date`: TVHeadend Init; tuner device ${t} not ready after delay. Continue anyway." "$NAME" 
        done

Now every adapters gets its own delay but usually when one adapter is configured, the rest is available within a few seconds. Furthermore after the total delay TVHeadend will startup anyway.