[linux-dvb] Re: Problem switching transponder in linux_2_4

[Hermann Gausterer <mrq1@gmx.net>]

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hi klaus

On Sunday 21 November 2004 11:57, Klaus Schmidinger wrote:
> > After having this driver run for a whole night, my second and third
> > DVB card (a budget WinTV NOVA-S and another FF Siemens DVB-S Rev. 1.3,
> > respectively) apparently "died" at around 05:00 this morning. That's
> > what I can see from the system load log here - normally these cards
> > do EPG scans, which causes a low load, but as of 05:00 this morning
> > that load was gone, and I wasn't able to get any more data from either
> > of these cards (tested via Transfer mode). My primary card was still
> > working this morning.

i am using linux-dvb.2003-11-08, with kernel 2.4.20; i get this 
similar behavior with a multicard-setup (3 * 1.3 dvb-s) on smp;
for me it looks like the primary card is always ok, but the additonal
cards get bad ~3-4h after a driver load, there is no data anymore
coming out of them. but after one minute (on a revording on such
a card) vdr restarts anyway with driver reload (in my setup) , 
so it does not "disturb" me any more; but sometimes the situation is 
even worse; there is still coming data out of the second/third card, 
but this data is corrupt, it does not render full screen, the sound is
disturbed, and the .vdr files are only 1/4 of the size for a recording 
the should have; but in this case, vdr does not notice this, and the 
recording is waste ...

did you never experienced this, klaus?

have you tried to disable the epg scan? it was supposed that the
big amount of channel swiches could disturb the firmware of the
cards, but i could find that out ....

this is not a bug on the hardware, because i switched
the primary card in the vdrconfig, and the situation changed
as expected, still the actual primary is ok, the rest not ...

> > I'm getting the feeling that the dvb-kernel driver doesn't like me.

my situation is even worse with dvb-kernel .. there was a report that
the dvb-kernel driver for the 1.3 dvb-s is not smp-safe. and this is
very true .... is this still so?? @developers (havent tried for month)

> Anyway, joerg@hakker.de suggested in a posting (that unfortunetaly
> broke the thread) to set pids_off=1 - and ever since I did this, I
> haven't had this problem any more :-)

can you tell me, where such a switch is? i hearing that the first time :)

mfg hermann
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