[mythtv-users] pvr250 and dvb-t: races during initialization

[Matt Beadon]

I recently posted my udev rules here:
http://www.gossamer-threads.com/lists/mythtv/users/380947#380947That helped
me resolve inconsistent /dev/video* numbering on cold/warm reboots with a
PVR-500 and HVR-1600 in my system.

There's also much more info here that should allow you to make udev rules
for any arbitrary set of tuners:
http://www.mythtv.org/wiki/Device_Filenames_and_udev

Matt

2009/5/13 Warpme <warpme at o2.pl>

> Hi *
>
> Recently I added DVB-T card to my KnopMyth R5F27 based backend.
> My backend is:
> -r5f27 + ivtv 10.0.1
> -3x hauppauge pvr250
> -1x hauppauge Nova-T (recently added)
>
> Issue  is that sometimes (every  few reboots/restarts) one analog card is
> unavailable.
> Scanning dmesg shows me that in fully working backend I have:
>
> root at mythtv:~# dmesg | grep -i video
> Boot video device is 0000:01:00.0
> Linux video capture interface: v2.00
> cx88[0]/0: registered device video0 [v4l2]
> ivtv0: Registered device video1 for encoder MPG (4096 kB)
> ivtv0: Registered device video32 for encoder YUV (2048 kB)
> ivtv0: Registered device video24 for encoder PCM (320 kB)
> ivtv1: Registered device video2 for encoder MPG (4096 kB)
> ivtv1: Registered device video33 for encoder YUV (2048 kB)
> ivtv1: Registered device video25 for encoder PCM (320 kB)
> ivtv2: Registered device video3 for encoder MPG (4096 kB)
> ivtv2: Registered device video34 for encoder YUV (2048 kB)
> ivtv2: Registered device video26 for encoder PCM (320 kB)
>
>
> When system boots with unavailable card - in dmesg I see first pvr250 and
> dvb-t having swapped video devices (pvr250 has assigned to video0 and dvb-t
> assigned to video1).
> It is obvious that in such case backend can't access pvr250 card as it has
> video[x] device different than declared in myth config.
>
> Problem start to manifest after adding dvb-t card.
> In my system all my pvr250 cards are declared as ivtv devices, while dvb-t
> seems to be served by v4l layer.
> Maybe this is source of my problems as I have 2 diferent subsystems (ivtv
> and v4l) which are concurrently inicializing my hardware ?.
> I was trying to setup pvr250 cards as v4l devices - but result is black
> screen from pvr250 sources.
>
> Do somebody has advice how to resolve this issue ?
>
> thx in advance
>
>
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mythtv.org/pipermail/mythtv-users/attachments/20090513/ce676094/attachment.htm>