[mythtv-users] PVR-150 defaulting to /dev/video1

[Frank Armstrong]

On 7/15/06, Nick <knowledgejunkie at gmail.com> wrote:
>
> On 15/07/06, Frank Armstrong <farmstrong at gmail.com> wrote:
> >
> > I have a a HD3000 and a PVR-150, and I know the 150 should be
> /dev/video0
> > but it's defaulting to /dev/video1.  How do i set it to default to
> > /dev/video0?  Setting it up in mythtvsetup i can set it to /dev/video1
> no
> > problem...but then it seems to only work on the first channel it's set
> on.
>
> Which /dev/video device the PVR is assigned should not affect its
> operation in MythTV - you just need to ensure the correct video device
> is being assigned under Hardware MPEG2 encoders.
>
> > If i try and change the channel it crashes on me and i'm pretty sure
> it's
> > becuase it tries to change the channel on the card assinged /dev/video0.
> I
> > know i can manually change the channel using ivtvctl -d but how do i set
> it
> > up in myth to always use /dev/video1??
>
> What's most likely happening is the analog port on the HDTV card is
> grabbing /dev/video0 as its module is loaded first, and then the PVR
> gets /dev/video1. If you are manually loading the drivers, you could
> ensure the ivtv module is loaded first - this should mean /dev/video0
> is assigned to the PVR-150 card.
>
> If modules are being loaded automatically, you can either use some
> udev rules to control device names for the HDTV and PVR cards, or,
> could swap the cards over - likely the card nearer the AGP/PCIe will
> be probed first and get /dev/video0. I prefer the udev method as it
> gives fine control over device names.

Nick
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Well i'm assuming the HDTV card driver is being loaded
automatically...Because i manually load the ivtv driver for the pvr
card. I've already switched the cards once to no avail...So i'd like to go
with the udev rules...but since i'm fairly new at this, could you explain
how i go about that?
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