[mythtv-users] multi-encoder backend: confused about which chanels are on which encoder

Ian Forde ian at duckland.org
Wed Feb 14 23:54:13 UTC 2007

On Wed, 2007-02-14 at 15:25 -0800, Seth Hettich wrote:
> ivtv-detect confirms that /dev/video0 is the pcHDTV3k, and that
> /dev/video1 is the pvr-150

Okay - that's one problem - it shouldn't see the pcHDTV card
as /dev/videoX at all if you're not using the analog tuner on the card.
I have the following entries in /etc/modprobe.d/blacklist:

blacklist cx8800
blacklist cx88_blackbird

And then in /etc/modprobe.conf I have:

alias char-major-81-1 cx88-dvb

Once you've got those entries, you'll want to do a 'depmod', then reboot
(or manually remove the existing modules with 'modprobe -r' - rebooting
is faster), followed by rerunning mythtv-setup...

> one bit: when I go into mythtv-setup and configure the pcHDTV...
> I have always used it as DVB-input, and it worked .  But now sometimes
> it has an error in there about the card not responding, or the device
> being in use (I'm not at home right now so I can't be sure).  If I
> switch to the other driver (the pcHDTV specific one) then later in the
> step where you connect up the program source to the card there is
> always an error.
> So, when I get that I generally restart myth and re-run setup and I
> can configure it with the DVB driver.
> I'm not sure if that's related to the channel->card mapping or not...
> I wish I had a better understanding of how myth deals with input cards
> and program sources for scheduling.

See above!  Also - check the wiki for examples...

                       Ian Forde
                       RHCE (7,EL4), CCSE, SCNA, SCDME

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