Dear again sirs,
After some investigation I've found 2 new clues.
1 - The problem begins always with a small signal drop. It usually lasts
only a few seconds but that's enough to crash the adapter connected to
the antenna.
2 - Now the news: if noticed that when this happens, the driver's kernel
module belonging to that same adapter just dies, as you can see in the
ps output below with my adapter /dev/dvb/adapter9:
root@*********:/home/*****# ps aux | grep cx88
root 903 0.0 0.0 0 0 ? S Nov19 0:00 [cx88
tvaudio]
root 2036 0.2 0.0 0 0 ? S Nov19 3:36
[cx88[8] dvb]
root 2037 0.2 0.0 0 0 ? S Nov19 3:34
[cx88[2] dvb]
root 2038 1.1 0.0 0 0 ? S Nov19 17:11
[cx88[1] dvb]
root 2039 1.0 0.0 0 0 ? S Nov19 15:34
[cx88[11] dvb]
root 2040 0.1 0.0 0 0 ? S Nov19 2:49
[cx88[3] dvb]
root 2041 1.0 0.0 0 0 ? S Nov19 16:12
[cx88[5] dvb]
root 2043 0.1 0.0 0 0 ? S Nov19 2:56
[cx88[7] dvb]
root 21951 0.0 0.0 0 0 ? S 10:11 0:00
[cx88[6] dvb]
root 21975 0.0 0.0 0 0 ? S 10:11 0:00
[cx88[4] dvb]
root 22741 0.0 0.0 7552 868 pts/4 S+ 10:30 0:00 grep cx88
The adapter's device files /dev/dvb/adapterX are kept in their place,
but they are no longer readable nor writeable.
My question is: which module is the responsible for launching the kernel
processes [cx88[XX] dvb]? Is there some way of manually launching one of
them?
How can I restore the crashed device without needing to restart the
machine or even remove the driver and affect the remaining working adapters?
Thank you very much for your help and time.
Kind regards.
El 13/08/12 11:44, Marc Bolós escribió:
Dear sirs,
I'm a systems engineer (from spain, so excuse my bad english) working
for some time with all kinds of TV receivers.
First I wanted to thank you all for your work.
I saw that sometimes your tips on this list are very helpfull, so I
wanted to make you a question that maybe you can help me with.
I've been working for some time with those devices, and recently I have
a problem which I've never seen before. The point is that I tune
properly frequency and I start watching all channels, but after some
time one or 2 tuners stops, and you cannot tune again any frequency
until you reboot all server.
One thing very strange there is that always are the same tuners which
fails. Signal is OK.
I don't have any error on syslog nor dmesg. And once you reboot it works
again.
Have anyone seen this problem before and can help me please?
Thanks a lot for your time,
Kind regards
Marc.
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