Mythtv tends to hang when exiting LiveTV

[Paul van Gerven <baloedebruinebeer@…>]

About 1 in 4 to 5 times, I have to wait 16 seconds before the menu appears after switching off live TV. On rare occasions, Mythfrontend doesn't recover at all.

This is what causes it (from the frontend output):

2009-01-11 10:02:07.885 RingBuf?(/media/mythtv/intrepid/1015_20090111100026.mpg) Error: Waited 16 seconds for data, aborting.

There is nothing in the backend log at the same time that indicates an error, but I do not know how to turn on verbose logging there.

The error was described a long time ago, and supposedly fixed (​http://www.mail-archive.com/mythtv-commits@mythtv.org/msg05500.html) and I cannot find recent reports of it, yet the problem is very real for me.

Using Mythtv 0.21.0 from the repositories of Ubuntu Intrepid, completely up to date.

Attached is as much output as I could get from mythfrontend -v all from when I start the frontend, start watching TV for a few seconds, exit, get the freeze and exit the frontend alltogether. The error is at 10:02:07.885.

[Paul van Gerven <baloedebruinebeer@…>]

verbose output of mythfrontend started in terminal

[Dibblah]

Can you please get a backtrace at the time where it is hanging?

Instructions here:

http://www.mythtv.org/docs/mythtv-HOWTO-22.html#ss22.2

[baloedebruinebeer@…]

Apologies, I am new at this. What executable do I specify for gdb? /usr/bin/mythfrontend is a script.

multimedia@snotrochel:~$ gdb mythfrontend -x gdbcommands GNU gdb 6.8-debian Copyright (C) 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <​http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i486-linux-gnu"... "/usr/bin/mythfrontend": not in executable format: File format not recognized /home/multimedia/gdbcommands:6: Error in sourced command file: No executable file specified. Use the "file" or "exec-file" command. (gdb) quit

[paulh]

Could be something like mythfrontend.real

[baloedebruinebeer@…]

Starting LiveTV, exiting, experiencing a freeze, and exiting mythtv normally

[Dibblah]

Unfortunately, this backtrace is not usable, since you need to have debugging symbols available. You should be able to install a package which includes them for MythTV.

​https://wiki.ubuntu.com/DebuggingProgramCrash for example.

[baloedebruinebeer@…]

It appears such a package is not offered anymore (I can find one only for Dapper). I suppose I'll give compiling Mythtv myself a try.

[Dibblah]

No response in 6 weeks.