[linux-dvb] dvb-s: some tests on signal-less operation

[Guido Fiala <gfiala@s.netic.de>]

As previous threads showed, at least Rev. 1.3 cards still have the problem 
with outcom-error/ARM-reset/crash.

Currently using dvb-kernel, 2.4.20, vdr 1.2.1

Today i tried to call SetPIDs(0,0,...) on a regular intervall in arm_thread, 
unfortunately the call disables the video-decoding (audio still there), so i 
also call restart_feeds(av7110) there.

Of course this leads to little "drop-outs" for about a quarter second each 
time, so i increased the sleep of the thread from 5*HZ to 50*HZ and later 
500*HZ, maybe i did'nt test long enough, but it seems to me, that the problem 
can be avoided that way.

Maybe someone with internal knowledge of the firmware can describe what does 
exactly happen when these functions are called, it might be possible to track 
down the problem to a certain function in the firmware which needs to be 
called more often, at least i hope so.

Would be nice, if there would be a helpful statement...


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