[mythtv-users] Questions about udev and /dev/video* ...

stuart stuart at xnet.com
Mon Jan 21 16:45:54 UTC 2008

Kevin Kuphal wrote:
> On Jan 20, 2008 12:45 PM, stuart <stuart at xnet.com 
> <mailto:stuart at xnet.com>> wrote:
>     Hi...
>     Know this is a mythtv and not a udev list, but was wondering if any had
>     and already solved this problem on their mythtv box?...
>     I have a PVR250 NTSC and KWorld 110 ATSC tuner in my mythtv box.  The
>     PVR250 had a tendency to boot up with different /dev/video* names.  So,
>     I used a udev rule to create a permanent device name and link it to the
>     /dev/video* device.  The problem is that the created permanent device
>     name links to the wrong device.  For instance, I will find /dev/pvr250
>     linked to /dev/video24 after boot up.  This doesn't work.  But if I
>     manually remove /dev/pvr250 and re-link it to /dev/video0, all is well.
>     So, does anyone know why this is happening?
> The ivtv driver should have a ivtv_first_minor option you can add to 
> your modprobe.conf and set it to 1.  This will cause the PVR to always 
> be on /dev/video1 leaving /dev/video0 open for the ATSC card no matter 
> what order the drivers load in.
> Kevin
> --------

Thanks Kevin for your help. I'll give it a try.

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