Mythfrontend crashes on playing back recording

[Stephen Robertson]

Binary package hint: mythtv

Mythfrontned crashes with a segmentation fault whenever trying to watch a recording.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Fri Jun 6 22:19:38 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/mythfrontend.real
Package: mythtv-frontend 0.21.0+fixes17392-0ubuntu0+mythbuntu1
PackageArchitecture: i386
ProcCmdline: /usr/bin/mythfrontend.real
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/bin/X11:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/tls/i686/cmov/libdl.so.2
 ?? () from /lib/ld-linux.so.2
 ?? () from /lib/tls/i686/cmov/libdl.so.2
 dlclose () from /lib/tls/i686/cmov/libdl.so.2
Title: mythfrontend.real crashed with SIGSEGV in dlclose()
Uname: Linux 2.6.24-18-generic i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin mythtv plugdev sambashare scanner video

[Mattias H (mattias-stubin)]

I probably got the same error...

[Apport retracing service (apport)]

StacktraceTop:?? ()
?? ()
?? ()
?? ()
?? ()

[Nicholas J Kreucher (kreucher)]

also hitting this here. I thought it might be OpenGL, but turning that off doesn't help:

$ mythfrontend --override-setting UseOpenglVideo=0
2008-08-11 13:34:33.146 Using runtime prefix = /usr, libdir = /usr/lib
2008-08-11 13:34:35.035 XScreenSaver support enabled
2008-08-11 13:34:35.038 DPMS is disabled.
2008-08-11 13:34:35.104 Empty LocalHostName.
2008-08-11 13:34:35.104 Using localhost value of bluetote
2008-08-11 13:34:35.106 Testing network connectivity to 192.168.3.3
2008-08-11 13:34:35.318 New DB connection, total: 1
2008-08-11 13:34:35.371 Connected to database 'mythconverg' at host: 192.168.3.3
2008-08-11 13:34:35.377 Closing DB connection named 'DBManager0'
2008-08-11 13:34:35.477 Primary screen 0.
2008-08-11 13:34:35.495 Connected to database 'mythconverg' at host: 192.168.3.3
2008-08-11 13:34:35.518 Using screen 0, 1400x1050 at 0,0
2008-08-11 13:34:35.550 Setting 'UseOpenglVideo' being forced to '0'
2008-08-11 13:34:35.556 New DB connection, total: 2
2008-08-11 13:34:35.578 Connected to database 'mythconverg' at host: 192.168.3.3
2008-08-11 13:34:35.587 mythfrontend version: 0.21.20080304-1 www.mythtv.org
2008-08-11 13:34:35.587 Enabled verbose msgs: important general
2008-08-11 13:34:38.200 Primary screen 0.
2008-08-11 13:34:38.202 Using screen 0, 1400x1050 at 0,0
2008-08-11 13:34:38.205 Switching to square mode (G.A.N.T)
2008-08-11 13:34:38.288 Using the Qt painter
mythtv: could not connect to socket
mythtv: No such file or directory
2008-08-11 13:34:38.289 lirc_init failed for mythtv, see preceding messages
2008-08-11 13:34:38.289 JoystickMenuClient Error: Joystick disabled - Failed to read /home/kreucher/.mythtv/joystickmenurc
2008-08-11 13:34:39.744 Loading from: /usr/share/mythtv/themes/G.A.N.T/base.xml
2008-08-11 13:34:39.889 Loading from: /usr/share/mythtv/themes/default/base.xml
2008-08-11 13:34:40.172 Registering Internal as a media playback plugin.
2008-08-11 13:34:44.120 XMLParse::LoadTheme using /usr/share/mythtv/themes/G.A.N.T/ui.xml
2008-08-11 13:34:44.496 Connecting to backend server: 192.168.3.3:6543 (try 1 of 5)
2008-08-11 13:34:44.503 Using protocol version 40
2008-08-11 13:34:47.033 AFD: Opened codec 0x8527d60, id(MPEG2VIDEO) type(Video)
2008-08-11 13:34:47.034 AFD: codec AC3 has 6 channels
2008-08-11 13:34:47.034 AFD: Opened codec 0x85280d0, id(AC3) type(Audio)
2008-08-11 13:34:47.248 TV: Attempting to change from None to WatchingPreRecorded
Segmentation fault (core dumped)

[Martin Mai (mrkanister-deactivatedaccount-deactivatedaccount)]

 Thank you for taking the time to report this bug and helping to make Ubuntu better. Please try to obtain a backtrace following the instructions at http://wiki.ubuntu.com/DebuggingProgramCrash and upload the backtrace (as an attachment) to the bug report. This will greatly help us in tracking down your problem.

[Martin Mai (mrkanister-deactivatedaccount-deactivatedaccount)]

We'd like to figure out what's causing this bug for you, but we haven't heard back from you in a while. Could you please provide the requested information? Thanks!

[grog808 (grog808)]

Howzit from Hawaii! I'm an ubuntu & mythtv newbie, so be gentle...

I have a similar problem looking through the mythfrontend.log, but I don't see the "segmentation fault" message. The frontend just quits. It had been working a few iterations earlier... (the same day).

I'd really like to see this project work. IMHO, it seems like myth (frontend) has been unstable since the inception of the dynamic X11 stuff. It wouldn't even work until I ran 7.10 just to copy off xorg.conf into my jaunty system (xubuntu), and add the Option "dri" "off" to accommodate my ati radeon mobility 7500 in my Compaq N610c.

How can I help?

[grog808 (grog808)]

Hmm. After thinking about it, I think my frontend system is too different to be of help? I had so much trouble getting the frontend to work on the 9.04 spin of MythBuntu, that I tried the 8.10 version, and fussed with all kinds of combinations. I finally ended up with an "iffy" Hauppauge WinTV" card on a Jaunty backend. It actually worked once going to my frontend on the N610c. I actually could watch TV. Sound was kinda scratchy, but ok at low volume. Then the frontend started acting up, and the gnashing of teeth began. The present iteration is 9.10 xubuntu for the frontend myth.

I'm game to rebuild (as time permits...)

[grog808 (grog808)]

Another observation... I have noticed that upon reboot of the frontend laptop, I'll get different screen resolutions. This used to happen even before my copying of the xorg.conf. Mythfrontend will come up at when the screen is at a certain resolution. In this case, 1400x1050. I have seen in other posts that this it the "default" for the n610c. Of course, now LiveTV is broken, but that is probably more due to the Hauppauge... Now I bet If I reboot, I'll get a different resolution, and it the frontend won't come up again...

[MarcRandolph (mrand)]

Closing since requested information has not been provided, and since upstream mythtv developers are no longer focused on 0.21 bugs.

If the issue is reproducible on 0.22, please re-open this ticket and we can try to forward this bug upstream to get the right eyes focused on it.

We have builds of mythtv 0.22 available on a PPA to test. Please follow the directions at http://mythbuntu.org/auto-builds to enable them.

WARNING: If you intend to revert back to 0.21 after testing, you will need to back up your database before upgrading.

    Thanks!