[mythtv-users] Finding cause of segmentation fault

Stefan D raptorjr08 at gmail.com
Fri Apr 24 20:17:19 UTC 2015


I've had some problems with audio sync and stuttering tv playback the last
few days so i thought i would try the latest master.
But since i was running a pretty old Ubuntu i found it tedious to try to
install Qt5, so i decided to upgrade my Ubuntu to 14.04 LTS, was running
12.04 LTS before.

I know that i would get in some trouble to get everything running again,
but this frontend segmentation fault was a surprise. Don't have a clue how
to find the problem. I know it is master so maybe it is not in a working
condition? (but it usually is) Or there is some other thing that got left
out during the upgrade that makes the frontend crash.

So how could i find out why i get a segmentation fault from the frontend?
What debug level should i use so you guys would be able to help me?

I do see in the backend log that the frontend connects.

Without any extra debug level this is what i get:

2015-04-24 22:15:30.013067 I  Setup Interrupt handler
2015-04-24 22:15:30.013091 I  Setup Terminated handler
2015-04-24 22:15:30.013100 I  Setup Segmentation fault handler
2015-04-24 22:15:30.013108 I  Setup Aborted handler
2015-04-24 22:15:30.013116 I  Setup Bus error handler
2015-04-24 22:15:30.013124 I  Setup Floating point exception handler
2015-04-24 22:15:30.013133 I  Setup Illegal instruction handler
2015-04-24 22:15:30.013143 I  Setup Real-time signal 0 handler
2015-04-24 22:15:30.013153 I  Setup User defined signal 1 handler
2015-04-24 22:15:30.013161 I  Setup User defined signal 2 handler
2015-04-24 22:15:30.013256 C  mythfrontend version: master
[v0.28-pre-2856-g38443b8] www.mythtv.org
2015-04-24 22:15:30.013265 C  Qt version: compile: 5.2.1, runtime: 5.2.1
2015-04-24 22:15:30.013269 N  Enabled verbose msgs:  general
2015-04-24 22:15:30.013280 N  Setting Log Level to LOG_INFO
2015-04-24 22:15:30.023741 N  Using runtime prefix = /usr
2015-04-24 22:15:30.023758 N  Using configuration directory =
/home/stefan/.mythtv
2015-04-24 22:15:30.023760 I  Added logging to the console
2015-04-24 22:15:30.023808 I  Assumed character encoding: en_US.UTF-8
2015-04-24 22:15:30.024772 I  Using localhost value of tvdator
2015-04-24 22:15:30.051629 N  Setting QT default locale to en_US
2015-04-24 22:15:30.051644 I  Current locale en_US
2015-04-24 22:15:30.051689 N  Reading locale defaults from
/usr/share/mythtv//locales/en_us.xml
2015-04-24 22:15:30.086225 E  ScreenSaverDBus: Could not connect to dbus:
The name org.freedesktop.ScreenSaver was not provided by any .service files
2015-04-24 22:15:30.086662 E  ScreenSaverDBus: Could not connect to dbus:
The name org.freedesktop.PowerManagement.Inhibit was not provided by any
.service files
2015-04-24 22:15:30.087075 E  ScreenSaverDBus: Could not connect to dbus:
The name org.mate.SessionManager was not provided by any .service files
2015-04-24 22:15:30.087502 E  ScreenSaverDBus: Could not connect to dbus:
The name org.gnome.SessionManager was not provided by any .service files
2015-04-24 22:15:30.139944 N  Desktop video mode: 1920x1080 60.000 Hz
2015-04-24 22:15:30.278860 I  Listening on TCP 127.0.0.1:6547
2015-04-24 22:15:30.278911 I  Listening on TCP 192.168.1.10:6547
2015-04-24 22:15:30.279006 I  Listening on TCP [::1]:6547
2015-04-24 22:15:30.279055 I  Listening on TCP
[fe80::224:1dff:fe84:42c8%eth0]:6547
2015-04-24 22:15:31.031027 E  Bonjour: Error: -65537
2015-04-24 22:15:31.031035 E  Bonjour: Failed to register service.
2015-04-24 22:15:31.033385 I  Loading en_us translation for module
mythfrontend
2015-04-24 22:15:31.041182 W  ThemeInfo: Unable to open themeinfo.xml for
/usr/share/mythtv/themes/BlackCurves-OSD/themeinfo.xml
2015-04-24 22:15:31.041193 E  ThemeInfo: The theme
(/usr/share/mythtv/themes/BlackCurves-OSD) is missing a themeinfo.xml file.
2015-04-24 22:15:31.042011 W  ThemeInfo: Unable to open themeinfo.xml for
/usr/share/mythtv/themes/Gray-OSD/themeinfo.xml
2015-04-24 22:15:31.042021 E  ThemeInfo: The theme
(/usr/share/mythtv/themes/Gray-OSD) is missing a themeinfo.xml file.
2015-04-24 22:15:31.049335 I  LIRC: Successfully initialized '/dev/lircd'
using '/home/stefan/.mythtv/lircrc' config
2015-04-24 22:15:31.049395 I  No joystick configuration found, not enabling
joystick control
2015-04-24 22:15:31.082435 E  CECAdapter: Failed to find any CEC devices.
2015-04-24 22:15:31.082546 I  CECAdapter: Closing down CEC.
2015-04-24 22:15:31.082572 I  UDPListener: Enabling
2015-04-24 22:15:31.083316 I  Binding to UDP 127.0.0.1:6948
2015-04-24 22:15:31.083363 I  Binding to UDP 192.168.1.10:6948
2015-04-24 22:15:31.083429 I  Binding to UDP [::1]:6948
2015-04-24 22:15:31.083493 I  Binding to UDP
[fe80::224:1dff:fe84:42c8%eth0]:6948
2015-04-24 22:15:31.083547 I  Binding to UDP 192.168.1.255:6948
2015-04-24 22:15:31.112522 I  Using Frameless Window
2015-04-24 22:15:31.112528 I  Using Full Screen Window
2015-04-24 22:15:31.120749 I  UI Screen Resolution: 1920 x 1080
2015-04-24 22:15:31.154561 I  Using the Qt painter
2015-04-24 22:15:31.678273 I  MythCoreContext::ConnectCommandSocket():
Connecting to backend server: 192.168.1.10:6543 (try 1 of 1)
2015-04-24 22:15:31.681584 I  MythCoreContext::CheckProtoVersion(): Using
protocol version 85
2015-04-24 22:15:31.910905 I  MythUIWebBrowser: Loading css from -
file:///usr/share/mythtv/themes/default/htmls/mythbrowser.css
2015-04-24 22:15:31.915883 I  MythUIWebBrowser: enabling plugins
2015-04-24 22:15:32.034688 I  Current MythTV Schema Version (DBSchemaVer):
1339
2015-04-24 22:15:32.115929 W  ThemeInfo: Unable to open themeinfo.xml for
/usr/share/mythtv/themes/BlackCurves-OSD/themeinfo.xml
2015-04-24 22:15:32.115938 E  ThemeInfo: The theme
(/usr/share/mythtv/themes/BlackCurves-OSD) is missing a themeinfo.xml file.
2015-04-24 22:15:32.116456 W  ThemeInfo: Unable to open themeinfo.xml for
/usr/share/mythtv/themes/Gray-OSD/themeinfo.xml
2015-04-24 22:15:32.116463 E  ThemeInfo: The theme
(/usr/share/mythtv/themes/Gray-OSD) is missing a themeinfo.xml file.
2015-04-24 22:15:32.266779 N  Registering Internal as a media playback
plugin.
Handling Segmentation fault
Segmentation fault
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