[mythtv-users] Problem with a second DVB card, help needed
otto at kolsi.fi
Fri Sep 22 18:36:11 UTC 2006
I have a following DVB cards related problem and I'm not sure if it's
related to Myth or DVB drivers / kernel.
I've used one Technisat Airstar 2 DVB-T card succesfully with Myth for
many months. Now I'm trying to get two of these cards to work at the
same time (FC5, 2.6.17-1.2187_FC5smp) but haven't succeeded yet.
With all the other apps (dvbscan, dvbstream, kaffeine, mplayer) I can
successfully tune to channels, and watch programs with both cards. With
mplayer I can succesfully watch two different programs from separate
cards at the same time.
Problem is that when I try to use these two cards *at the same time*
with Myth, the second card is not working. First card records program
fine but although Myth starts to record a program, the recording is
never made with the second card (the file does not exist).
And more strangely, after this kind of failure, if I stop the backend
I'm not anymore able to use any other apps with the failed card. Tuning
doesn't work etc. After reboot everything is okay again. How is this
possible? Could apps using DVB API misuse the card somehow so that it is
leaved to non-working state? Or does this clearly show that this is
kernel / driver issue?
Both cards work separately with Myth. I can record a show with card 1,
stop backend, update card priority so that second card gets higher
priority, start backend again and successfully record a show with the
The problem is simultaneous usage of cards. I know that there are lots
and lots of people using multiple DVB cards without problems. And it
feels like driver / kernel issue.. but how is mplayer able to use both
cards then and myth not?
Any ideas what is going on or how to troubleshoot this further?
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