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Old 04-18-2006, 03:16 PM   #1
Registered: Dec 2005
Location: Hamburg, Germany
Distribution: ubuntu
Posts: 39

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Avermedia 771 DVB-T always busy

I successfully installed the AverMedia AverTV 771 DVB-T card on my Ubuntu (Kernel 2.6.12) and I have watched TV with xine and mplayer.
Then I installed a lot of things, mythtv among it and it was still working fine.

Now it doesn't work anymore, I don't know what has caused it. Mythtv can not connect to the device anymore. I did an strace on xine and mplayer for dvb://[Name] and found this:
open("/dev/dvb/adapter0/frontend0", O_RDWR|O_LARGEFILE) = -1 EBUSY (Device or resource busy)
How can I find out, what process keeps using the device? I'm fairly new to Linux so if there is a trick for that I would love to learn about it!
Old 04-20-2006, 10:12 AM   #2
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Registered: Aug 2003
Location: Sydney
Distribution: debian
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Command 'lsof' lists all open files and the processes using them.

Added later:

I've also had possibly related problems using mencoder with the TV card. After running for a specified period (using the -endpos option) the program fails to quit. It stays running as an unkillable process, blocking access to the DVB devices. I have to reboot to get rid of it. I don't have a solution at this stage. I will try a kernel upgrade (presently 2.6.13 with multimedia patches) sometime.

Last edited by maroonbaboon; 04-20-2006 at 08:45 PM.


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