Freecom DVB-T channel scan crashes kaffeine

Jan Henrik Sylvester me at
Wed Feb 6 08:57:23 PST 2008

Raaf wrote:
> Jan Henrik Sylvester wrote:
>> Compiling scan, make failed since "-include $(wildcard *.d) dummy" is
>> invalid as a line in dvbusb/app/scan/Makefile on its own.
> It builds fine here, make sure you use gmake.

Ok, I did use (BSD-)make.

> 02, 03, and 04 all have the same tuning parameters and use the same
> audio and video pids, only the pmt differs. It seems that these are
> regional channels that were broadcasting the same program at the time
> you were scanning. Try scanning again at different time to see if you
> get different pids.

Thanks, I should have thought of that myself. My assumption that there 
is something wrong came from different programs / tuners handling that 

>> I often get "dvb dvr read timeout" after double clicking on a channel.
>> Usually it works again after "Stop" and "Play". Is that expected?
> No its' not. Does it happen only when you are switching from one channel
> to another channel, or also when you are tuning to a channel from the
> stopped state? Also is it printed once after a channel switch or every
> second?

I cannot reproduce that right now. From my memory, it did not happen 
switching from the stopped state and the message is only printed once.

Usually, I was able to switch channels without stopping first, but in 
that case, the picture from the previous channel just freezes and 
nothing happens. I can double click on the previous channel again to 
make in run again, but even after that I need to stop at least once to 
be able to switch channels again. From what I remember, that always 
worked -- thus, not really a problem.

>> Are the messages from dvbusb I mentioned before expected using Kaffeine?
>>   dvbusb_usb_get_packets: Warning discarded 180 unknown bytes
>>   discontinuity for pid: 17 expected: 2 got: 8
> Either you are using an old version of the driver or you have build
> the driver with diagnostic on, I suggest you don't build the driver
> with diagnostic to keep your dmesg from getting spammed.

Yes, it is diagnostic. I thought it might have been an indication why 
Kaffeine crashes, but since you say it is expected in diagnostic mode, 
the problem with Kaffeine is probably really simply a problem of Kaffeine.

BTW: On your homepage, you write that the experimental state of the 
driver manifests itself in picture artifacts. I had different problems, 
too, that I cannot reproduce right now:

Often, the stick would not take the firmware but give an error message 
on dmesg that I cannot remember. I could never fix that by klunloading 
and reloading the driver or unplugging and reconnecting the stick to the 
same USB port. Anyhow, switching the USB port, the stick would accept 
the firmware. If you are interested, I will send you the error message, 
if that happens again. (I happened about every other try at the 
beginning, but does not happen right now.)

Once, I had FreeBSD crash very probably related to dvbusb. I have never 
done that before, but if you are interested, I could try to follow the 
chapter about crash analysis from the handbook to try to extract some 
information from the vmcore generated. (Just not right now.)

Jan Henrik

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