[mythtv-users] mythfrontend hanging w/blank screen

Mike Kobler mkobler at gmail.com
Sun Aug 16 19:02:33 UTC 2009


> Can you do a backtrace as described in the wiki/HOWTO (
> http://www.mythtv.org/wiki/Debugging ).  We need the debug symbols (see
> the info on using package-based installs in the wiki page and then fix
> it up/add to it as you find more info) and need a "thread apply all bt
> full" backtrace.

Let me know of any other info.   One thing I noticed while looking at
the source for thread 1, was that I don't have udevinfo, which it
looks like it tries to run to figure out what all the block devices in
the system are.   Perhaps that's a red herring, but maybe it'll help?

thanks again for the help,
mike

(gdb) thread apply all bt full

Thread 6 (Thread 0x7f36747e1950 (LWP 8393)):
#0  0x00007f367913dc8d in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
No symbol table info available.
#1  0x00007f367a48c679 in QWaitCondition::wait () from
/usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#2  0x00007f367cb08194 in CEvent::WaitForEvent () from
/usr/lib/libmythupnp-0.21.so.0
No symbol table info available.
#3  0x00007f367cb08289 in WorkerThread::run () from
/usr/lib/libmythupnp-0.21.so.0
No symbol table info available.
#4  0x00007f367a1dbf2b in QThreadInstance::start () from
/usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#5  0x00007f3679139097 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6  0x00007f367871e77d in clone () from /lib/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.

Thread 5 (Thread 0x7f3673fe0950 (LWP 8394)):
#0  0x00007f367913dc8d in pthread_cond_timedwait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
No symbol table info available.
#1  0x00007f367a1dbbb5 in ?? () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#2  0x00007f367a1dbd0e in QThread::msleep () from /usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#3  0x00007f367cafb0e4 in TaskQueue::run () from /usr/lib/libmythupnp-0.21.so.0
No symbol table info available.
#4  0x00007f367a1dbf2b in QThreadInstance::start () from
/usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#5  0x00007f3679139097 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#6  0x00007f367871e77d in clone () from /lib/libc.so.6
No symbol table info available.
#7  0x0000000000000000 in ?? ()
No symbol table info available.

Thread 4 (Thread 0x7f36737df950 (LWP 8395)):
#0  0x00007f36787184a2 in select () from /lib/libc.so.6
No symbol table info available.
#1  0x00007f367caf7655 in SSDP::run () from /usr/lib/libmythupnp-0.21.so.0
No symbol table info available.
#2  0x00007f367a1dbf2b in QThreadInstance::start () from
/usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#3  0x00007f3679139097 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#4  0x00007f367871e77d in clone () from /lib/libc.so.6
No symbol table info available.
#5  0x0000000000000000 in ?? ()
No symbol table info available.

Thread 3 (Thread 0x7f3671deb950 (LWP 8404)):
#0  0x00007f367913da09 in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/libpthread.so.0
No symbol table info available.
#1  0x00007f367a48c6d2 in QWaitCondition::wait () from
/usr/qt/3/lib/libqt-mt.so.3
No symbol table info available.
#2  0x00007f367c37ac8f in MythContext::waitPrivRequest () from
/usr/lib/libmyth-0.21.so.0
---Type <return> to continue, or q <return> to quit---
No symbol table info available.
#3  0x0000000000432fde in ?? ()
No symbol table info available.
#4  0x00007f3679139097 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#5  0x00007f367871e77d in clone () from /lib/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.

Thread 2 (Thread 0x7f3670f87950 (LWP 8406)):
#0  0x00007f36791402bb in read () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007f367800f26c in lirc_nextcode () from /usr/lib/liblirc_client.so.0
No symbol table info available.
#2  0x00007f367c4af8bd in LircClient::Process () from /usr/lib/libmyth-0.21.so.0
No symbol table info available.
#3  0x00007f367bf8430f in ?? () from /usr/lib/libmythui-0.21.so.0
No symbol table info available.
#4  0x00007f3679139097 in start_thread () from /lib/libpthread.so.0
No symbol table info available.
#5  0x00007f367871e77d in clone () from /lib/libc.so.6
No symbol table info available.
#6  0x0000000000000000 in ?? ()
No symbol table info available.

Thread 1 (Thread 0x7f367ea487b0 (LWP 8386)):
#0  0x00007f3679140f5f in waitpid () from /lib/libpthread.so.0
No symbol table info available.
#1  0x00007f367c499f25 in MediaMonitorUnix::GetDeviceFile () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#2  0x00007f367c49a7fb in MediaMonitorUnix::FindPartitions () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#3  0x00007f367c49a4e6 in MediaMonitorUnix::FindPartitions () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#4  0x00007f367c49b071 in MediaMonitorUnix::CheckMountable () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#5  0x00007f367c49b3f1 in MediaMonitorUnix::MediaMonitorUnix () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#6  0x00007f367c3cf154 in MediaMonitor::GetMediaMonitor () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#7  0x00007f367bf78ff7 in MythMainWindow::RegisterMediaHandler () from
/usr/lib/libmythui-0.21.so.0
No symbol table info available.
#8  0x00007f366f8c70f6 in setupKeys () at main.cpp:80
No locals.
#9  0x00007f366f8c80ec in mythplugin_init (libversion=<value optimized
out>) at main.cpp:103
        settings = {<> = {<No data fields>}, <No data fields>}
#10 0x00007f367c3d243b in MythPlugin::init () from /usr/lib/libmyth-0.21.so.0
No symbol table info available.
#11 0x00007f367c3d2916 in MythPluginManager::init_plugin () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#12 0x00007f367c3d38e4 in MythPluginManager::MythPluginManager () from
/usr/lib/libmyth-0.21.so.0
No symbol table info available.
#13 0x000000000043be82 in ?? ()
No symbol table info available.
#14 0x00007f36786765e4 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
---Type <return> to continue, or q <return> to quit---
#15 0x00000000004326d9 in ?? ()
No symbol table info available.
#16 0x00007fff86b8ecb8 in ?? ()
No symbol table info available.
#17 0x0000000000000000 in ?? ()
No symbol table info available.
#0  0x00007f3679140f5f


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