[mythtv-users] mythtv-setup segmentation fault when scanning DVB-T

[Nick Crabtree]

 Hello

I have just upgraded from Ubuntu Feisty to Gutsy. I have also added a second
Freecom USB DVB-T tuner during the upgrade. Both times I've had the vanilla
mythtv installation which was packaged with the release. (The Feisty
installation was only a couple of weeks ago).

Before the upgrade, mythtv-setup full scan worked fine. Now, it crashes.
I'm in the UK, just within range of the Crystal Palace transmitter.

Any help appreciated.

Below is a cut-down console log and gdb backtrace:

nickc at jackdaw:/var/log/mythtv$ sudo /etc/init.d/mythtv-backend stop
Stopping MythTV server: mythbackend .
nickc at jackdaw:/var/log/mythtv$ gdb /usr/bin/mythtv-setup.real
(gdb) set args -geometry 600x400+100+100
(gdb) run
Starting program: /usr/bin/mythtv-setup.real -geometry 600x400+100+100
(no debugging symbols found)
...
2007-11-01 14:55:44.639 Loading from:
/usr/share/mythtv/themes/default/base.xml
2007-11-01 14:55:46.012 Using NV NPOT texture extension
2007-11-01 14:56:13.325 New DB connection, total: 2
2007-11-01 14:56:13.326 Connected to database 'mythconverg' at host:
localhost
2007-11-01 14:56:13.328 DiSEqCDevTree, Warning: No device tree for cardid 1
2007-11-01 14:56:13.335 New DB connection, total: 3
2007-11-01 14:56:13.336 Connected to database 'mythconverg' at host:
localhost
2007-11-01 14:56:13.342 New DB connection, total: 4
2007-11-01 14:56:13.344 Connected to database 'mythconverg' at host:
localhost
2007-11-01 14:56: 13.347 New DB connection, total: 5
2007-11-01 14:56:13.348 Connected to database 'mythconverg' at host:
localhost
2007-11-01 14:56:13.390 DiSEqCDevTree, Warning: No device tree for cardid 2
New Thread -1254954096 (LWP 24184)]
[New Thread -1263346800 (LWP 24203)]
[Thread -1263346800 (LWP 24203) exited]
[New Thread -1263346800 (LWP 26880)]
[Thread -1263346800 (LWP 26880) exited]
[New Thread -1263346800 (LWP 29512)]
[Thread -1263346800 (LWP 29512) exited]
[New Thread -1263346800 (LWP 32175)]
[Thread -1263346800 (LWP 32175) exited]
[New Thread -1263346800 (LWP 825)]
[Thread -1263346800 (LWP 825) exited]
[New Thread -1263346800 (LWP 922)]
[Thread -1263346800 (LWP 922) exited]
[New Thread -1263346800 (LWP 1031)]
[Thread -1263346800 (LWP 1031) exited]
[New Thread -1263346800 (LWP 1146)]
[New Thread -1274651760 (LWP 1147)]
2007-11-01 15:10: 49.516 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 767
2007-11-01 15:10:49.517 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 8191
2007-11-01 15:10: 49.568 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 767
2007-11-01 15:10:49.569 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 8191

... (above 2 lines repeated 100s of times) ...


2007-11-01 15:10:59.702 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 767
2007-11-01 15:10:59.703 DVBSM(0): Failed to open demux device
/dev/dvb/adapter0/demux0 for filter on pid 8191

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1274651760 (LWP 1147)]
0xb78b2f77 in MPEGStreamData::ProcessPAT () from /usr/lib/libmythtv-
0.20.2.so.0
(gdb) where
#0  0xb78b2f77 in MPEGStreamData::ProcessPAT () from /usr/lib/libmythtv-
0.20.2.so.0
#1  0xb78b3703 in MPEGStreamData::HandleTables () from /usr/lib/libmythtv-
0.20.2.so.0
#2  0xb78bff14 in ATSCStreamData::HandleTables () from /usr/lib/libmythtv-
0.20.2.so.0
#3  0xb78cdc5d in ScanStreamData::HandleTables () from /usr/lib/libmythtv-
0.20.2.so.0
#4  0xb78b5ae9 in MPEGStreamData::HandleTSTables () from /usr/lib/libmythtv-
0.20.2.so.0
#5  0xb78aac3c in MPEGStreamData::ProcessTSPacket () from
/usr/lib/libmythtv-0.20.2.so.0
#6  0xb78aa5b3 in MPEGStreamData::ProcessData () from /usr/lib/libmythtv-
0.20.2.so.0
#7  0xb7c30d55 in DVBSignalMonitor::RunTableMonitorTS () from
/usr/lib/libmythtv-0.20.2.so.0
#8  0xb7c33588 in DVBSignalMonitor::RunTableMonitor () from
/usr/lib/libmythtv-0.20.2.so.0
#9  0xb7c335bb in DVBSignalMonitor::TableMonitorThread () from
/usr/lib/libmythtv- 0.20.2.so.0
#10 0xb5cbb46b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0xb5b1b73e in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb)
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