Bug#926164: totem: Totem UI freezes after a while when playing or paused with long M4A file

Mike Crowe mac at mcrowe.com
Mon Apr 1 13:52:09 BST 2019 

Package: totem
Version: 3.30.0-4
Severity: normal

Since upgrading to Buster recently, the Totem user interface has started
hanging whilst I listen to M4A audio files that are several hours long.
Sometimes it does so whilst playing (playback continues) and sometimes whilst
paused. The user interface is entirely unresponsive - I can't even get the
title bar text to change colour to indicate focus.

I'm running the standard Gnome Desktop under Wayland.

The last time it happened was after I'd left Totem paused for the entire
weekend. I installed totem-dbgsym and captured the following stack traces:

[1]chuckie:~> gdb -p 32517
GNU gdb (Debian 8.2.1-2) 8.2.1
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Attaching to process 32517
[New LWP 32518]
[New LWP 32519]
[New LWP 32520]
[New LWP 32521]
[New LWP 32522]
[New LWP 32524]
[New LWP 32527]
[New LWP 32528]
[New LWP 32536]
[New LWP 32540]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f6c3660fb69 in __GI___poll (fds=0x5649730b2c80, nfds=6, timeout=9983) at
../sysdeps/unix/sysv/linux/poll.c:29
29      ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) info threads
  Id   Target Id                                           Frame
* 1    Thread 0x7f6c31104ac0 (LWP 32517) "totem"           0x00007f6c3660fb69
in __GI___poll (fds=0x5649730b2c80, nfds=6, timeout=9983) at
../sysdeps/unix/sysv/linux/poll.c:29
  2    Thread 0x7f6c30dd1700 (LWP 32518) "gmain"           0x00007f6c3660fb69
in __GI___poll (fds=0x5649721e2f40, nfds=2, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
  3    Thread 0x7f6c2bfff700 (LWP 32519) "qtdemux0:sink"   syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  4    Thread 0x7f6c2b7fe700 (LWP 32520) "gdbus"           0x00007f6c3660fb69
in __GI___poll (fds=0x7f6c1c0151e0, nfds=3, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
  5    Thread 0x7f6c2affd700 (LWP 32521) "dconf worker"    0x00007f6c3660fb69
in __GI___poll (fds=0x5649721f5b60, nfds=1, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
  6    Thread 0x7f6c291a7700 (LWP 32522) "totem:disk$0"
futex_wait_cancelable (private=0, expected=0, futex_word=0x5649722d4928) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
  7    Thread 0x7f6c1bfff700 (LWP 32524) "pool"            syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  8    Thread 0x7f6c1980a700 (LWP 32527) "threaded-ml"     0x00007f6c3660fb69
in __GI___poll (fds=0x7f6c04009e90, nfds=3, timeout=-1) at
../sysdeps/unix/sysv/linux/poll.c:29
  9    Thread 0x7f6c19009700 (LWP 32528) "typefind:sink"   syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  10   Thread 0x7f6bf7290700 (LWP 32536) "multiqueue0:src" syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
  11   Thread 0x7f6be9fe0700 (LWP 32540) "aqueue:src"      syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
(gdb) bt
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x5649730b2c80, nfds=6,
timeout=9983) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6c37122136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6c3712225c in g_main_context_iteration () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3  0x00007f6c36fe299d in g_application_run () at /usr/lib/x86_64-linux-
gnu/libgio-2.0.so.0
#4  0x0000564971262278 in main (argc=<optimized out>, argv=<optimized out>) at
../src/totem.c:83
(gdb) thread 2
[Switching to thread 2 (Thread 0x7f6c30dd1700 (LWP 32518))]
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x5649721e2f40, nfds=2, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
29      in ../sysdeps/unix/sysv/linux/poll.c
(gdb) bt
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x5649721e2f40, nfds=2, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6c37122136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6c3712225c in g_main_context_iteration () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3  0x00007f6c371222a1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 3
[Switching to thread 3 (Thread 0x7f6c2bfff700 (LWP 32519))]
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38      ../sysdeps/unix/sysv/linux/x86_64/syscall.S: No such file or directory.
(gdb) bt
#0  0x00007f6c366152a9 in syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6c3716bf9f in g_cond_wait () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2  0x00007f6c34ad9363 in gst_data_queue_push () at /usr/lib/x86_64-linux-
gnu/libgstbase-1.0.so.0
#3  0x00007f6c288e1927 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#4  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#5  0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#6  0x00007f6c18046f0a in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstisomp4.so
#7  0x00007f6c18065358 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstisomp4.so
#8  0x00007f6c36454f41 in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#9  0x00007f6c3714adc3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#12 0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 4
[Switching to thread 4 (Thread 0x7f6c2b7fe700 (LWP 32520))]
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x7f6c1c0151e0, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
29      ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) bt
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x7f6c1c0151e0, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6c37122136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6c371224c2 in g_main_loop_run () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3  0x00007f6c3701bf66 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 5
[Switching to thread 5 (Thread 0x7f6c2affd700 (LWP 32521))]
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x5649721f5b60, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
29      in ../sysdeps/unix/sysv/linux/poll.c
(gdb) bt
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x5649721f5b60, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6c37122136 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6c3712225c in g_main_context_iteration () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#3  0x00007f6c372d2ffd in  () at /usr/lib/x86_64-linux-
gnu/gio/modules/libdconfsettings.so
#4  0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 6
[Switching to thread 6 (Thread 0x7f6c291a7700 (LWP 32522))]
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x5649722d4928) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
88      ../sysdeps/unix/sysv/linux/futex-internal.h: No such file or directory.
(gdb) bt
#0  0x00007f6c35a7900c in futex_wait_cancelable (private=0, expected=0,
futex_word=0x5649722d4928) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f6c35a7900c in __pthread_cond_wait_common (abstime=0x0,
mutex=0x5649722d48d8, cond=0x5649722d4900) at pthread_cond_wait.c:502
#2  0x00007f6c35a7900c in __pthread_cond_wait (cond=0x5649722d4900,
mutex=0x5649722d48d8) at pthread_cond_wait.c:655
#3  0x00007f6c29e06e63 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f6c29e06bb7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 7
[Switching to thread 7 (Thread 0x7f6c1bfff700 (LWP 32524))]
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38      ../sysdeps/unix/sysv/linux/x86_64/syscall.S: No such file or directory.
(gdb) bt
#0  0x00007f6c366152a9 in syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6c3716bf9f in g_cond_wait () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2  0x00007f6c370f40ab in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6c3714ad97 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 8
[Switching to thread 8 (Thread 0x7f6c1980a700 (LWP 32527))]
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x7f6c04009e90, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
29      ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
(gdb) bt
#0  0x00007f6c3660fb69 in __GI___poll (fds=0x7f6c04009e90, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f6c1a4fc101 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f6c1a4ed920 in pa_mainloop_poll () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#3  0x00007f6c1a4edf6e in pa_mainloop_iterate () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#4  0x00007f6c1a4ee020 in pa_mainloop_run () at /usr/lib/x86_64-linux-
gnu/libpulse.so.0
#5  0x00007f6c1a4fc049 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f6c1a4994f8 in  () at /usr/lib/x86_64-linux-
gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#8  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 9
[Switching to thread 9 (Thread 0x7f6c19009700 (LWP 32528))]
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38      ../sysdeps/unix/sysv/linux/x86_64/syscall.S: No such file or directory.
(gdb) bt
#0  0x00007f6c366152a9 in syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6c3716bf9f in g_cond_wait () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2  0x00007f6c3645513b in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#3  0x00007f6c3714adc3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread 10
[Switching to thread 10 (Thread 0x7f6bf7290700 (LWP 32536))]
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38      in ../sysdeps/unix/sysv/linux/x86_64/syscall.S
(gdb) bt
#0  0x00007f6c366152a9 in syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6c3716bf9f in g_cond_wait () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2  0x00007f6c288e87be in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#3  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#4  0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#5  0x00007f6c34ac8dfd in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#6  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#7  0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#8  0x00007f6c34ac8dfd in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#9  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#10 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#11 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#12 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#13 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#14 0x00007f6c28981012 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstplayback.so
#15 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#16 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#17 0x00007f6c288f6790 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#18 0x00007f6c288f68d9 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#19 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#20 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#21 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#22 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#23 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#24 0x00007f6c288d9de1 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#25 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#26 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#27 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#28 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#29 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#30 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#31 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#32 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#33 0x00007f6c36323bec in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#34 0x00007f6c36323f31 in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#35 0x00007f6c3632a54a in gst_audio_decoder_finish_frame () at
/usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#36 0x00007f6bf7f7b185 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstlibav.so
#37 0x00007f6c363267a9 in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#38 0x00007f6c36326b8b in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#39 0x00007f6c36327de7 in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#40 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#41 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#42 0x00007f6c34aad9c8 in gst_base_parse_push_frame () at
/usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#43 0x00007f6c34aaea35 in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#44 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#45 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#46 0x00007f6c288e2a8d in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#47 0x00007f6c36454f41 in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
--Type <RET> for more, q to quit, c to continue without paging--
#48 0x00007f6c3714adc3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#49 0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#51 0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb)
(gdb) thread 11
[Switching to thread 11 (Thread 0x7f6be9fe0700 (LWP 32540))]
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
38      in ../sysdeps/unix/sysv/linux/x86_64/syscall.S
(gdb) bt
#0  0x00007f6c366152a9 in syscall () at
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f6c3716bf9f in g_cond_wait () at /usr/lib/x86_64-linux-
gnu/libglib-2.0.so.0
#2  0x00007f6c34abb68c in gst_base_sink_wait_preroll () at
/usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#3  0x00007f6c36336a6e in  () at /usr/lib/x86_64-linux-gnu/libgstaudio-1.0.so.0
#4  0x00007f6c34abdb1e in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#5  0x00007f6c34abec00 in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#6  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#7  0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#8  0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#9  0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#10 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#11 0x00007f6c34ac8dfd in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#12 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#13 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#14 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#15 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#16 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#17 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#18 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#19 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#20 0x00007f6c34ac8dfd in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#21 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#22 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#23 0x00007f6c34ac8dfd in  () at /usr/lib/x86_64-linux-gnu/libgstbase-1.0.so.0
#24 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#25 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#26 0x00007f6c3640dccb in gst_proxy_pad_chain_default () at
/usr/lib/x86_64-linux-gnu/libgstreamer-1.0.so.0
#27 0x00007f6c3641fc3a in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#28 0x00007f6c36427ed2 in gst_pad_push () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#29 0x00007f6c288e7b07 in  () at /usr/lib/x86_64-linux-
gnu/gstreamer-1.0/libgstcoreelements.so
#30 0x00007f6c36454f41 in  () at /usr/lib/x86_64-linux-
gnu/libgstreamer-1.0.so.0
#31 0x00007f6c3714adc3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f6c3714a425 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f6c35a72fa3 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#34 0x00007f6c3661a82f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95



-- System Information:
Debian Release: buster/sid
  APT prefers testing-debug
  APT policy: (500, 'testing-debug'), (500, 'testing'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.19.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages totem depends on:
ii  grilo-plugins-0.3               0.3.8-2
ii  gsettings-desktop-schemas       3.28.1-1
ii  gstreamer1.0-clutter-3.0        3.0.26-2
ii  gstreamer1.0-plugins-base       1.14.4-1
ii  gstreamer1.0-plugins-good       1.14.4-1
ii  gstreamer1.0-x                  1.14.4-1
ii  libc6                           2.28-8
ii  libcairo2                       1.16.0-4
ii  libgdk-pixbuf2.0-0              2.38.1+dfsg-1
ii  libglib2.0-0                    2.58.3-1
ii  libgstreamer-plugins-base1.0-0  1.14.4-1
ii  libgstreamer1.0-0               1.14.4-1
ii  libgtk-3-0                      3.24.5-1
ii  libnautilus-extension1a         3.30.5-1
ii  libpango-1.0-0                  1.42.4-6
ii  libpangocairo-1.0-0             1.42.4-6
ii  libtotem-plparser18             3.26.2-1
ii  libtotem0                       3.30.0-4
ii  libx11-6                        2:1.6.7-1
ii  totem-common                    3.30.0-4

Versions of packages totem recommends:
ii  gstreamer1.0-libav         1.15.0.1+git20180723+db823502-2
ii  gstreamer1.0-plugins-bad   1.14.4-1+b1
ii  gstreamer1.0-plugins-ugly  1.14.4-1
ii  gstreamer1.0-pulseaudio    1.14.4-1
ii  totem-plugins              3.30.0-4

Versions of packages totem suggests:
pn  gnome-codec-install  <none>

-- no debconf information

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