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

[Philipp Kern]

Control: tag -1 - unreproducible

Hi,

On 1/1/25 7:47 AM, Chris Knadle wrote:
> 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.]

Looks like this dependency/recommends is missing then. mumble indeed 
starts if pipewire-bin is installed, which is not a dependency on 
anything in KDE, nor by mumble itself.

I installed these packages:

> Installing:
>   pipewire-bin
> 
> Installing dependencies:
>   libconfig++9v5  libglibmm-2.4-1t64  libpipewire-0.3-modules  libsigc++-2.0-0v5     libxml++2.6-2v5  pipewire-pulse
>   libffado2       libopenfec1         libroc0.4                libwireplumber-0.5-0  pipewire         wireplumber

Then it worked. This seems to imply that there is something broken in 
mumble where it loads the pipewire library that is installed but fails 
because the config is not there?

When I remove pipewire-bin, it removes these:

> REMOVING:
>   pipewire  pipewire-bin  pipewire-pulse  wireplumber

When I then delete ~/.config/Mumble it segfaults again. With it already 
created, it starts.

When I remove pipewire-bin and call mumble with the config already 
created, it segfaults on exit. (I have not tried actually connecting to 
a server and doing the talking.)

> 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?

No, I used debuginfod.debian.net, but it was from the package.

Kind regards
Philipp Kern