[mythtv-users] MythTV and Satellite

[James Dastrup]

On Monday 06 February 2006 9:12 am, Mark J. Small wrote:
> > >   No risk of having the sat box
> > > "miss" the ir commands from the ir blaster (which rarely
> > > happens, but is
> > > possible).
> >
> > With my Dish 311 receiver it happens enough to annoy the heck out
> > of my wife. I've missed
> > enough of my own shows that I'd love to find a better way too.
>
> I used to get a lot of missed changes on my DCT2000, but I found
> that if I used nice to raise the priority of the channel change
> script, it happened MUCH less often.  On my Duron 800 backend,
> there occasionally be a five second pause between digits sent from
> my ir blaster.  In that 5 seconds, the DCT2000 would timeout and
> assume that the slowpoke on the remote must surely be done pressing
> buttons by now.
>

I used to have a lot of missed channel changes and recordings on my 
Dish 311, too, but I finally solved it.  I used to get about 90% 
accuracy, but now I get a perfect 100% of signals sent properly. I 
can't tell you 'exactly' how I solved it, but it was a combination of 
kernel config, lircd.conf and my channel change script.  I'm using 
lirc-0.8.0 and this IR blaster: http://iguanaworks.net/ir/.  I don't 
know exactly what in the kernel helped if anything, but I made a lot 
of changes to preemption, timing and other cpu stuff. I didn't use 
nice at all. Here's my config files, in case this will help anyone.

http://www.dastrup.com/ftp/pub/linux/changechannel.sh
http://www.dastrup.com/ftp/pub/linux/mythbe.config
http://www.dastrup.com/ftp/pub/linux/lircd.conf