[mythtv-users] Two lingering issues with 0.20 and/or Ubuntu

Thu Nov 9 18:57:50 UTC 2006

Michael,

I think I mis-interpreted your first post.  The backend will run from the
init script if you run it by sudo like this right?:

sudo /etc/init.d/mythtv-backend start
>

If so, then we need to investigate why it won't run from startup init
scripts by default.  (You have a different startup problem then what i've
noticed on the forums)

For controlling /dev/ttyS0,
add mythtv to the "dialout" group.  I will notate this to be added to the
guide under serial control.  I'll also try to remember that feisty packages
should do this by default.

About ivtv control, myth is able to control the devices after these two
commands, correct?  If so, then try adding to /etc/default/mythtv-backend
some verbosity switches (probably video related switches) and starting the
backend to see if it tells you when it tries to set the channel and input.

Regards,

Mario

On 11/9/06, Michael Tiller <michael.tiller at gmail.com> wrote:
>
> Mario,
>
>   Thanks for the response.  I did not use mythtv as my first user.  In
> fact, I used your guide <https://wiki.ubuntu.com/Install_IVTV_Edgy> (which
> I think is quite good) which is how I knew not to do this. :-)
>
>   Note that I have no trouble starting it manually (via sudo).  I have
> added three lines which I've highlighted in red.  When I get home I'll try
> taking them out and see if they make a difference but if the script is run
> as root I can't see why it would make a difference.
>
>   I dont know what the lines:
> # Default-Start:     24
> # Default-Stop:      S
> ...mean but I'm assuming they are fine as configured.
>
>   Note that everything in red is a hack so I'm working on trying to
> eliminate the need for them.  I know that somehow udev is responsible for
> the permissions on ttyS0 but I have yet to figure out how to specify a rule
> so it gets the permissions right.  The other two things Myth should do for
> me but does not seem to?!?
>
>   Thanks for any ideas.
>
> --
> Mike
>
> #! /bin/sh
> ### BEGIN INIT INFO
> # Provides:          mythtv-backend
> # Required-Start:    $local_fs
> # Required-Stop:     $local_fs
> # Default-Start:     24
> # Default-Stop:      S
> # Short-Description: Start/Stop the MythTV server.
> ### END INIT INFO
>
> PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin
> DAEMON=/usr/bin/mythbackend
> NAME="mythbackend"
> DESC="MythTV server"
>
> # Add this to make sure we can
> # change channels
> chmod a+rw /dev/ttyS0
>
> test -x $DAEMON || exit 0
>
> set -e
>
> USER=mythtv
> RUNDIR=/var/run/mythtv
> ARGS="--daemon --logfile /var/log/mythtv/mythbackend.log --pidfile
> $RUNDIR/$NAME
> .pid"
> EXTRA_ARGS=""
> NICE=0
>
> if [ -f /etc/default/mythtv-backend ]; then
>   . /etc/default/mythtv-backend
> fi
>
> ARGS="$ARGS $EXTRA_ARGS"
>
> mkdir -p $RUNDIR
> chown -R $USER $RUNDIR
>
>
> case "$1" in
>   start)
>         if test -e $RUNDIR/$NAME.pid ; then
>                 echo "mythbackend already running, use restart instead."
>         else
>                 echo -n "Starting $DESC: $NAME"
>                 ivtvctl --set-input 0
>                 ivtv-tune -c 3
>                 start-stop-daemon --start --pidfile $RUNDIR/$NAME.pid \
>                         --chuid $USER --nicelevel $NICE --exec $DAEMON --
> $ARGS
>                 echo "."
>         fi
>         ;;
>
>
>
>
> On 11/9/06, Mario Limonciello < mario.mailing at gmail.com> wrote:
> >
> > Mike,
> >
> > Recently, I have seen a few posts similar that people can't get the
> > backend to launch from myth init scripts in Ubuntu.  I'm trying to find
> > something common between them but have yet to.  I personally have 2 ubuntu
> > backends, and haven't come up with any problems with either init script.
> >
> > By some weird chance, when you did your ubuntu install - your "first"
> > user - did you use mythtv?  Your not supposed to as this user is created
> > when you install myth and is used for myth.  If that is what you did, then
> > I've got some ideas what we can do.
> >
> > If this isn't what you did, then we need to walk through the init script
> > and find where the trouble is.  What guide did you follow for installation?
> > Did you follow a guide?
> >
> > Regards,
> >
> > Mario
> >
> >  On 11/9/06, Michael Tiller <michael.tiller at gmail.com > wrote:
> >
> > > I've nearly got my new Ubuntu based MythTV 0.20 system into a robust
> > > state.  I've just got two little things left that I'm having trouble with
> > > and hopefully somebody here can point me to a solution.
> > >
> > > The first issue is that when I reboot, it does not start the backend.
> > > There is a script in /etc/init.d called "mythtv-backend" that was installed
> > > when I installed MythTV from the repositories.  However, it does not appear
> > > to get run?!?  If I remove /var/log/mythbackend.log and then touch it and
> > > chown it to get it to a "0 size" state and then reboot it remains empty.
> > > Any idea what is going on there?  Is there anything I have to do to (apart
> > > from putting the file in /etc/init.d) that I have to do to get the system to
> > > invoke it (I know how this is done in FC but I'm fairly new to Ubuntu,
> > > sorry).
> > >
> > > As a side note, is this script run as root?  I assume so.  I ask
> > > because I need to do a few things as root inside this script to get the
> > > system properly set up.
> > >
> > > Actually that leads to another question...I'm having to run ivtvctl
> > > and ivtv-tune in /etc/init.d/mythtv-backend.  This is because even though I
> > > have specified to use the tuner input and what the tuner channel should be
> > > set to, the backend doesn't seem to apply these properly.  Any ideas on what
> > > might be going on?
> > >
> > > The last issue is that, once I get the backend up and running, the
> > > first time I go to "WatchTV" it just comes back to the menu after showing a
> > > blank screen for a few seconds.  The second time I go to watch TV, it works
> > > (and from then on).  Any ideas?  I suspect a similar thing might happen for
> > > the first attempted recording (if nobody has watched TV) which could cause
> > > me to miss recordings.
> > >
> > > Thanks for any pointers.
> > >
> > > --
> > > Mike
> > >
> > >
> > > _______________________________________________
> > > mythtv-users mailing list
> > > mythtv-users at mythtv.org
> > > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> > >
> > >
> > >
> >
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> >
> >
> >
>
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