[mythtv-users] myth problems with external tuner

Michael T. Dean mtdean at thirdcontact.com
Mon Feb 12 15:39:57 UTC 2007

On 02/12/2007 10:22 AM, Michael Thome wrote:
> I've got all the elements for connecting to an external tuner (cable 
> box) set up and working properly.  *outside* of mythtv, the channel 
> changer is working, ivtv drivers (for my pvr-150) works fine both with 
> internal tuner and cable box via composite-in.  The problem is that I 
> cannot seem to get mythtv to actually switch to card-1,composite under 
> any conditions.
> mythweb and the frontend's schedule see the extra channels (fully 
> populated with schedules), mythweb's channel editor shows the third 
> lineup with the premium channels.  I see no errors in any of the log 
> files, but the frontend will not let me switch to it using "C", and 
> scheduled recordings of any of those channels fail.  It doesn't appear 
> that the channel changing script is ever run, either.  Switching to one 
> of the cable-box only channels during live tv watching leaves me 
> watching the pvr150's tuner input, tuned to the last channel - it seems 
> to know enough to switch to the right card (and device = /dev/video0), 
> but then bails out switching to composite 1 and changing the channel - 
> does myth somehow not support this sort of use?!?
> Any suggestions for how to proceed would be most welcome!
> Setup:
> A = pvr-150 tuner w/analog lineup #1
> B = pvr-150 composite 1 w/digital cable lineup #2
> C = hd5500 dvb w/ dtv lineup #3
> A and C works, B is unselectable

Make sure your channel change script works and returns a 0 exit status.  
If you're "testing" before you write the channel change script, set the 
script to "/bin/true" (no quotes).


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