[mythtv] backtrace of mythfrontend was: RE: Improved MythTV
DirectFB output
Juha Pahkala
juhis at trinity.is-a-geek.com
Tue Apr 6 12:30:06 EDT 2004
Hello,
Don't know if this is related to the improved directfb patch or not, but
I get a segfault whenever I stop watching live-tv or a recording. And
this happens with the 'release' setting in settings.pro. But if I build
mythtv with 'debug' settings, and try to watch live-tv with that, the tv
never shows, mythfrontend exits before that. And I get the backtrace
that's attached. Is there a way to make mythfrontend under gdb work when
watching tv, so I could make a real backtrace of it?
TIA, juhis
On Mon, 2004-04-05 at 17:38, Juha Pahkala wrote:
> This mail is a reply to the below thread in mythtv-dev list:
>
> http://www.gossamer-threads.com/archive/MythTV_C2/Dev_F10/Improved_MythTV_DirectFB_output_P117567/
>
> Please apply these patches to cvs. They fixed my Directfb output, before
> them, my directfb output always looked funny. Now I know it must've been
> the colorspaces ;) Here's a mail I sent about it a month ago.
>
> http://www.gossamer-threads.com/archive/MythTV_C2/Dev_F10/DirectFB_and_DVB-C_almost_working_P111893/
>
> There's at least one problem with the patch though. Pretty often when I
> change the channel, when watching live tv, a still frame of the previous
> channel is left on top of the picture, ie. I can hear the sound of the
> new channel, but see the still frame of the old one. And the frame won't
> disappear even when I exit mythfrontend, I have to use some other
> directfb application to reset the picture on the tv.
>
> Anyhow thanks for the great contribution, mythtv is becoming usable for
> me too, very happy ;)
>
> juhis
>
>
> ______________________________________________________________________
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> mythtv-dev at mythtv.org
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This GDB was configured as "i386-linux"...
(gdb) handle SIGPIPE nostop
Signal Stop Print Pass to program Description
SIGPIPE No Yes Yes Broken pipe
(gdb) run -qws
Starting program: /usr/local/mythtv-debug/bin/mythfrontend -qws
[New Thread 1094762624 (LWP 23117)]
Creating mouse: Auto
2004-04-06 19:11:57 mythfrontend version: 0.15.20040324-1 www.mythtv.org
2004-04-06 19:11:57 Enabled verbose msgs : important general
[New Thread 1126099888 (LWP 23126)]
2004-04-06 19:12:00 Registering Internal as a media playback plugin.
[New Thread 1150483376 (LWP 23143)]
2004-04-06 19:12:32 Connecting to backend server: 127.0.0.1:6543 (try 1 of 5)
2004-04-06 19:12:32 Using protocol version 4
2004-04-06 19:12:33 Using protocol version 4
2004-04-06 19:12:34 Using protocol version 4
[New Thread 1158978480 (LWP 23149)]
[New Thread 1167367088 (LWP 23150)]
Input #0, mpeg, from 'rbuf://127.0.0.1:6543/mnt/video/mythtv//ringbuf9.nuv':
Stream #0.0: Video: mpeg2video, 720x576, 25.00 fps
Stream #0.1: Audio: mp2, 48000 Hz, stereo, 224 kb/s
2004-04-06 19:12:39 Opening OSS audio device '/dev/dsp'.
2004-04-06 19:12:40 Audio fragment size: 4096
[New Thread 1182972848 (LWP 23151)]
(*) DirectFB/Config: parsing config file '/etc/directfbrc'.
---------------------- DirectFB v0.9.21 ---------------------
(c) 2000-2002 convergence integrated media GmbH
(c) 2002-2004 convergence GmbH
-----------------------------------------------------------
(*) DirectFB/Core: Multi Application Core. (with MMX support) (2004-04-01 10:17)
(*) Direct/Memcpy: using MMXEXT optimized memcpy()
[New Thread 1191402416 (LWP 23152)]
(!) DirectFB/FBDev/vt: FBIOGET_CON2FBMAP failed!
--> Inappropriate ioctl for device
(!) DirectFB/FBDev/vt: FBIOPUT_CON2FBMAP failed!
--> Inappropriate ioctl for device
Program received signal SIGUSR2, User defined signal 2.
[Switching to Thread 1094762624 (LWP 23117)]
0x41247cdc in nanosleep () from /lib/tls/libc.so.6
(gdb) thread apply all bt full
Thread 7 (Thread 1191402416 (LWP 23152)):
#0 0x41270787 in select () from /lib/tls/libc.so.6
No symbol table info available.
#1 0x4138f51d in fusion_read_loop () from /usr/local/lib/libfusion-0.9.so.21
No symbol table info available.
#2 0x47035620 in ?? ()
No symbol table info available.
Thread 6 (Thread 1182972848 (LWP 23151)):
#0 0x41247cdc in nanosleep () from /lib/tls/libc.so.6
No symbol table info available.
#1 0x41270ffb in usleep () from /lib/tls/libc.so.6
No symbol table info available.
#2 0x4074d123 in AudioOutputOSS::OutputAudioLoop() (this=0x45fae008)
at audiooutputoss.cpp:575
space_on_soundcard = 1182973436
zeros = "\000"
#3 0x4074d73f in AudioOutputOSS::kickoffOutputAudioLoop(void*) (
player=0x45fae008) at audiooutputoss.cpp:634
No locals.
#4 0x4090c974 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
Thread 5 (Thread 1167367088 (LWP 23150)):
#0 0x41247cdc in nanosleep () from /lib/tls/libc.so.6
No symbol table info available.
#1 0x41270ffb in usleep () from /lib/tls/libc.so.6
No symbol table info available.
#2 0x40209f24 in RingBuffer::ReadAheadThread() (this=0x81b59e8)
at RingBuffer.cpp:799
totfree = 45055
ret = 256000
used = 2514945
#3 0x4020967f in RingBuffer::startReader(void*) (type=0x81b59e8)
at RingBuffer.cpp:657
rbuffer = (RingBuffer *) 0x81b59e8
#4 0x4090c974 in start_thread () from /lib/tls/libpthread.so.0
No symbol table info available.
Thread 4 (Thread 1158978480 (LWP 23149)):
#0 0x4126fe04 in ioctl () from /lib/tls/libc.so.6
No symbol table info available.
#1 0x46832330 in dfb_vt_initialize ()
from /usr/local/lib/directfb-0.9.21/systems/libdirectfb_fbdev.so
No symbol table info available.
#2 0x4682e045 in system_initialize ()
from /usr/local/lib/directfb-0.9.21/systems/libdirectfb_fbdev.so
No symbol table info available.
#3 0x468333a0 in ?? ()
from /usr/local/lib/directfb-0.9.21/systems/libdirectfb_fbdev.so
No symbol table info available.
#4 0x20008e00 in ?? ()
No symbol table info available.
#5 0x4138fa70 in fusion_skirmish_dismiss ()
from /usr/local/lib/libfusion-0.9.so.21
No symbol table info available.
Previous frame inner to this frame (corrupt stack?)
#0 0x41247cdc in nanosleep () from /lib/tls/libc.so.6
(gdb)
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