[ivtv-users] cat /dev/video0 suddently stops after capturing a looong time

[Mike]

I'm getting the same problem too, i don't have mythtv so it shouldn't be 
that causing it.

It was a while ago that i last had the pc capturing from the card but 
from memory cat will keep running but stop reading any data. Killing cat 
and rerunning it doesn't make a difference, there will still be nothing 
read. Leaving the PC for a day or two and running cat doesn't get it to 
work (rules out heat issues?). I'm sure i tried unloading/reloading the 
ivtv modules but any time i tried it, it never worked properly and only 
way to get the card to capture was to reboot and it'll capture with cat 
fine straight after.

Currently running cat /dev/vide0 now after turning the debugging on and 
will report back here. Currently going for just over 30mins and it's fine.

cheers,
Mike

Hans Verkuil wrote:
> 
> To be honest I haven't come across something like this before. When cat 
> stops, do you mean that it hangs or that it just returns and you got 
> the shell prompt? If you run 'cat' again, does it actually continue 
> capturing? Does the same thing happen if MythTV is not running at all? 
> (just to make sure there is no interference between MythTV and cat)
> 
> Also try to turn on debugging in ivtv (make sure that MythTV isn't 
> running): 'ivtv-ctl -D0x413'. You will get a lot of messages in your 
> kernel log, but when cat stops then mail me the last 200 lines of the 
> ivtv debugging in the kernel log. That should hopefully give some 
> information on what's happening.
> 
> Regards,
> 
> 	Hans
>