Bug#1091358: mumble: crashes on startup with pipewire backtrace

Wed Jan 1 06:47:49 GMT 2025

Control: tag -1 unreproducible
thanks

Greetings, Philipp.

Sorry you've run into this bug; crashing on startup would be something 
I'd consider 'serious' or 'grave'.

I've done some initial testing with a VM in both the bookworm/stable and 
sid branches, and after clearing out ~/.local/share/Mumble and 
.config/Mumble I'm able to get the mumble client to start -- and the VM 
uses pipewire.

One thing I notice in the bug report is that the APT policy is for 
'testing' and 'sid', without 'stable'. I've occasionally ran into 
strange bugs in systems I ran in that configuration in the past, and I 
was told in responses to bug reports that 'testing' was an incomplete 
repository. It's just an initial thought at the moment, certainly 
nothing definitive.

A further clue is that there's an error of file client.conf missing. I 
searched the VM running mumble and it looks like it should be:

     /usr/share/pipewire/client.conf

That should be in the 'pipewire-bin' package, which the 'pipewire' 
package depends on. Please do a quick check that these two packages are 
installed locally. [If you're running pipewire I can't imagine either of 
these wouldn't be installed.]

The other thing I notice are strange directories, such as 
./src/mumble/PipeWire.cpp. Is this crash the result of running mumble 
from a local build, rather than from the binary Debian package?

Here's the output of mumble 1.5.517-2.1 starting that I got:

user at sid-MumbleTest:~$ mumble
Dir didn't exist: /home/user/.local/share/data/Mumble
Successfully migrated data directory
<W>2025-01-01 01:28:57.027 ALSAInit: No cards found, not initializing
<D>2025-01-01 01:28:57.029 JACK 1.9.21 from libjack.so.0
<X>2025-01-01 01:28:57.030 PipeWire 0.3.65 from libpipewire-0.3.so.0
<D>2025-01-01 01:28:57.031 PulseAudio 16.1.0 from libpulse.so.0
<W>2025-01-01 01:28:57.039 Theme: "Mumble"
<W>2025-01-01 01:28:57.039 Style: "Lite"
<W>2025-01-01 01:28:57.039 --> qss: ":themes/Default/Lite.qss"
<W>2025-01-01 01:28:57.040 Locale is "en_US" (System: "en_US")
<W>2025-01-01 01:28:57.215 Database SQLite: "3.40.1"
<W>2025-01-01 01:28:57.218 Updating application palette
<W>2025-01-01 01:28:57.227 GlobalShortcutX: Using XI2 2.4
<W>2025-01-01 01:28:57.252 QMetaObject::connectSlotsByName: No matching 
signal for on_qtvUsers_customContextMenuRequested(QPoint,bool)
<W>2025-01-01 01:28:57.301 AudioInput: Opus encoder set for high quality 
speech
<W>2025-01-01 01:28:57.301 AudioInput: 40000 bits/s, 48000 hz, 480 sample
<W>2025-01-01 01:28:57.307 AudioInput: Initialized mixer for 1 channel 
48000 hz mic and 0 channel 48000 hz echo
<W>2025-01-01 01:28:57.308 AudioOutput: Initialized 2 channel 48000 hz mixer
<W>2025-01-01 01:28:57.320 AudioInput: Opus encoder set for high quality 
speech
<W>2025-01-01 01:28:57.320 AudioInput: 40000 bits/s, 48000 hz, 480 sample
<W>2025-01-01 01:28:57.322 AudioInput: Initialized mixer for 1 channel 
48000 hz mic and 0 channel 48000 hz echo
<W>2025-01-01 01:28:57.323 AudioOutput: Initialized 2 channel 48000 hz mixer
<W>2025-01-01 01:28:57.325 AudioInput: Opus encoder set for high quality 
speech
<W>2025-01-01 01:28:57.325 AudioInput: 40000 bits/s, 48000 hz, 480 sample
<W>2025-01-01 01:28:57.327 AudioInput: Initialized mixer for 1 channel 
48000 hz mic and 0 channel 48000 hz echo
<W>2025-01-01 01:28:57.328 AudioOutput: Initialized 2 channel 48000 hz mixer
<W>2025-01-01 01:28:57.351 AudioInput: Using Speex as noise canceller
warning: The VAD has been replaced by a hack pending a complete rewrite
<W>2025-01-01 01:28:59.656 AudioInput: Opus encoder set for high quality 
speech
<W>2025-01-01 01:28:59.656 AudioInput: 40000 bits/s, 48000 hz, 480 sample
<W>2025-01-01 01:28:59.658 AudioInput: Initialized mixer for 1 channel 
48000 hz mic and 0 channel 48000 hz echo
<W>2025-01-01 01:28:59.658 AudioOutput: Initialized 2 channel 48000 hz mixer
<W>2025-01-01 01:28:59.677 AudioInput: Using Speex as noise canceller
warning: The VAD has been replaced by a hack pending a complete rewrite
<W>2025-01-01 01:28:59.682 Zeroconf: Third-party browser API reports 
error -65537
<W>2025-01-01 01:29:06.232 PulseAudio: Forcibly disconnected from PulseAudio
user at sid-MumbleTest:~$

Hopefully we can figure out what's going on here.

    -- Chris

Chris Knadle
Chris.Knadle at coredump.us

On 12/24/24 10:10, Philipp Kern wrote:
> Package: mumble
> Version: 1.5.517-2.1
> Severity: important
> X-Debbugs-Cc: pkern at debian.org
>
> Installed mumble without any prior config and it crashes on startup:
>
> [...]
> <W>2024-12-24 16:07:13.611 Wayland does not support QWindow::requestActivate()
> <W>2024-12-24 16:07:13.613 SocketRPC: Removing old socket on "/run/user/1000/MumbleSocket"
> <W>2024-12-24 16:07:13.617 AudioInput: Opus encoder set for high quality speech
> <W>2024-12-24 16:07:13.617 AudioInput: 40000 bits/s, 48000 hz, 480 sample
> [W][95537.973114] pw.conf      | [          conf.c: 1214 try_load_conf()] can't load config client.conf: No such file or directory
> [E][95537.973154] pw.conf      | [          conf.c: 1243 pw_conf_load_conf_for_context()] can't load config client.conf: No such file or directory
> [New Thread 0x7fffd1ab36c0 (LWP 214051)]
> [W][95537.973513] pw.conf      | [          conf.c: 1214 try_load_conf()] can't load config client.conf: No such file or directory
> [E][95537.973521] pw.conf      | [          conf.c: 1243 pw_conf_load_conf_for_context()] can't load config client.conf: No such file or directory
> Thread 1 "mumble" received signal SIGSEGV, Segmentation fault.
> [...]
> (gdb) bt
> #0  pw_thread_loop_stop (loop=0x0) at ../src/pipewire/thread-loop.c:351
> #1  0x00005555558546d3 in PipeWireEngine::stop (this=0x55555686b200) at ./src/mumble/PipeWire.cpp:292
> #2  PipeWireInput::~PipeWireInput (this=<optimized out>, this=<optimized out>) at ./src/mumble/PipeWire.cpp:335
> #3  PipeWireInput::~PipeWireInput (this=<optimized out>, this=<optimized out>) at ./src/mumble/PipeWire.cpp:336
> #4  0x00005555556cb685 in boost::detail::sp_counted_base::release (this=0x5555569d5770) at /usr/include/boost/smart_ptr/detail/sp_counted_base_gcc_atomic.hpp:120
> #5  boost::detail::sp_counted_base::release (this=0x5555569d5770) at /usr/include/boost/smart_ptr/detail/sp_counted_base_gcc_atomic.hpp:116
> #6  boost::detail::shared_count::~shared_count (this=<optimized out>, this=<optimized out>) at /usr/include/boost/smart_ptr/detail/shared_count.hpp:432
> #7  boost::shared_ptr<AudioInput>::~shared_ptr (this=<optimized out>, this=<optimized out>) at /usr/include/boost/smart_ptr/shared_ptr.hpp:336
> #8  boost::shared_ptr<AudioInput>::reset (this=<synthetic pointer>) at /usr/include/boost/smart_ptr/shared_ptr.hpp:727
> #9  Audio::stop () at ./src/mumble/Audio.cpp:234
> #10 0x00005555556de132 in AudioWizard::restartAudio (this=0x555556f386e0) at ./src/mumble/AudioWizard.cpp:367
> #11 0x000055555566c5f1 in AudioWizard::qt_static_metacall (_o=0x555556f386e0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0x7fffffffd310)
>      at ./obj-x86_64-linux-gnu/src/mumble/mumble_client_object_lib_autogen/EWIEGA46WW/moc_AudioWizard.cpp:151
> #12 AudioWizard::qt_metacall (this=0x555556f386e0, _c=QMetaObject::InvokeMetaMethod, _id=4, _a=0x7fffffffd310)
>      at ./obj-x86_64-linux-gnu/src/mumble/mumble_client_object_lib_autogen/EWIEGA46WW/moc_AudioWizard.cpp:215
> #13 0x00007ffff571838d in doActivate<false> (sender=0x555556bac270, signal_index=7, argv=0x7fffffffd310) at kernel/qobject.cpp:3951
> #14 0x00007ffff5710dc7 in QMetaObject::activate (sender=sender at entry=0x555556bac270, m=m at entry=0x7ffff6e9a560 <QAbstractSlider::staticMetaObject>,
>      local_signal_index=local_signal_index at entry=0, argv=argv at entry=0x7fffffffd310) at kernel/qobject.cpp:3985
> #15 0x00007ffff6a5e252 in QAbstractSlider::valueChanged (this=this at entry=0x555556bac270, _t1=<optimized out>, _t1 at entry=5) at .moc/moc_qabstractslider.cpp:309
> #16 0x00007ffff6a5ea18 in QAbstractSlider::setValue (this=0x555556bac270, value=5) at widgets/qabstractslider.cpp:548
> #17 0x00005555556e4a6c in AudioWizard::AudioWizard (this=<optimized out>, p=<optimized out>, this=<optimized out>, p=<optimized out>) at ./src/mumble/Global.cpp:24
> #18 0x0000555555646529 in std::make_unique<AudioWizard, MainWindow*&> () at /usr/include/c++/14/bits/unique_ptr.h:1076
> #19 main (argc=<optimized out>, argv=<optimized out>) at ./src/mumble/main.cpp:742
>
> This is within a (somewhat stock) KDE Plasma session on Wayland.
> Needless to say that I don't get far enough to disable/switch away from
> Pipewire. The Flatpak version does start.
>
> Kind regards and thanks
> Philipp Kern
>
> -- System Information:
> Debian Release: trixie/sid
>    APT prefers testing
>    APT policy: (500, 'testing'), (400, 'unstable')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
>
> Kernel: Linux 6.12.5-amd64 (SMP w/8 CPU threads; PREEMPT)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
> Shell: /bin/sh linked to /usr/bin/dash
> Init: systemd (via /run/systemd/system)
> LSM: AppArmor: enabled
>
> Versions of packages mumble depends on:
> ii  libasound2t64              1.2.12-1+b1
> ii  libavahi-compat-libdnssd1  0.8-15
> ii  libc6                      2.40-4
> ii  libgcc-s1                  14.2.0-8
> ii  libopus0                   1.5.2-2
> ii  libpocofoundation100       1.13.0-6+b1
> ii  libpocoxml100              1.13.0-6+b1
> ii  libpocozip100              1.13.0-6+b1
> ii  libprotobuf32t64           3.21.12-10+b1
> ii  libqt5core5t64             5.15.15+dfsg-2
> ii  libqt5dbus5t64             5.15.15+dfsg-2
> ii  libqt5gui5t64              5.15.15+dfsg-2
> ii  libqt5network5t64          5.15.15+dfsg-2
> ii  libqt5sql5-sqlite          5.15.15+dfsg-2
> ii  libqt5sql5t64              5.15.15+dfsg-2
> ii  libqt5svg5                 5.15.15-2
> ii  libqt5widgets5t64          5.15.15+dfsg-2
> ii  libqt5xml5t64              5.15.15+dfsg-2
> ii  libsndfile1                1.2.2-2
> ii  libspeechd2                0.11.5-5.1
> ii  libssl3t64                 3.3.2-2
> ii  libstdc++6                 14.2.0-8
> ii  libx11-6                   2:1.8.10-2
> ii  libxi6                     2:1.8.2-1
> ii  lsb-release                12.1-1
>
> mumble recommends no packages.
>
> Versions of packages mumble suggests:
> pn  mumble-server      <none>
> pn  speech-dispatcher  <none>
>
> -- no debconf information
>