[mythtv-users] MythBackend Crashing

[Joseph A. Caputo]

On Thursday 18 December 2003 01:52, rgoodkin at zaius1.homeunix.org wrote:
> Hello,
>
> Mythbackend seems to be crashing when trying to run with kernel 2.6
> (It seems to like my hardware a lot more, the kernel that is)..  Here
> is the backend..
>
> 2003-12-17 23:50:16 adding: zaius1 as a player 0
> 2003-12-17 23:50:16 MainServer::HandleAnnounce Playback
> 2003-12-17 23:50:16 adding: zaius1 as a player 1
> 2003-12-17 23:50:16 MainServer::HandleAnnounce Playback
> 2003-12-17 23:50:16 adding: zaius1 as a player 0
> 2003-12-17 23:50:16 MainServer::HandleAnnounce Playback
> 2003-12-17 23:50:16 adding: zaius1 as a player 0
> 2003-12-17 23:50:16 adding: zaius1 as a remote ringbuffer
> 2003-12-17 23:50:17 Changing from None to WatchingLiveTV
> Cannot open DSP '/dev/dsp', dying.
> open: Device or resource busy
> Could not detect audio blocksize
> Cannot open DSP '/dev/dsp', exitingopen: Device or resource busy
> audio volume set to '65535'
> Killed
>
> Here is the frontend..
>
> 2003-12-17 23:50:14 Enabled verbose msgs : important general
> Found 2 Xinerama Screens.
> Using screen 1, 640x480+0+0
> 2003-12-17 23:50:16 Connecting to backend server: 127.0.0.1:6543 (try
> 1 of 5)
> 2003-12-17 23:50:17 ReadStringList timeout (quick).
> Errm, event socket just closed.
> 2003-12-17 23:50:17 ReadStringList timeout (quick).
> QSocketDevice::writeBlock: Invalid socket
> 2003-12-17 23:50:17 Error writing stringlist
> QSocketDevice::readBlock: Invalid socket
> QSocketDevice::writeBlock: Invalid socket
> 2003-12-17 23:50:17 Error writing stringlist
> ASSERT: "i <= nodes" in /usr/qt/3/include/qvaluelist.h (372)
> Couldn't find a matching decoder for:
> rbuf://127.0.0.1:6543/mnt/store//ringbuf1.nuv
> QSocketDevice::writeBlock: Invalid socket
> 2003-12-17 23:50:17 Error writing stringlist
> QSocketDevice::writeBlock: Invalid socket
> 2003-12-17 23:50:17 Error writing stringlist
> QSocketDevice::readBlock: Invalid socket
> 2003-12-17 23:50:17 Changing from None to WatchingLiveTV
> Remote encoder not responding.
>
>
> Any ideas?  I'm using fluxbox so I don't have anything open..
> Thanks!


Well, if you're *absolutely sure* that no non-myth processes have /dev/
dsp open, then I'd say your sound card (or at least the driver you're 
using) doesn't support full duplex.  Something does have /dev/dsp -- 
mythfrontend needs it for playback output.  If your card doesn't do 
full duplex (i.e., simultaneous record & playback) then mythbackend 
can't open it for recording.

It might help to post your tuner card setup, sound card & sound drivers 
(ALSA or OSS & version number).

-JAC