Bug#1034649: 7kaa: Unplugging USB headset hangs 7kaa

[P. J. McDermott]

Hi Nils,

On Thu, 20 Apr 2023 22:20:34 +0200 Nils Dagsson Moskopp <nils+debian-p14s at dieweltistgarnichtso.net> wrote:
> whenever I unplug the USB headset while 7kaa is running, it hangs.
> 7kaa prints a single line of output to the terminal, quoted below:
> 
> > AL lib: (EE) ALCpulsePlayback_streamStateCallback: Received stream failure!

This looks like one of (many[1][2][3][4]) bugs in OpenAL's PulseAudio
backend (apparently OpenAL's upstream maintainer doesn't use PulseAudio,
which I don't either).  I found reports of it affecting at least one
other game.  If we can't solve it here, I'll reassign.

An apparent solution is to edit "/etc/openal/alsoft.conf" and under
"[pulse]" change "allow-moves" to "true".  Can you try this and report
whether that solves the issue?

It's also possible that there's an infinite loop somewhere in 7kaa's
src/openal/openal_audio.cpp triggered by this OpenAL error.  Could you
please install 7kaa-dbgsym, run 7kaa under gdb, reproduce the hang, and
get a backtrace?

    $ apt install 7kaa-dbgsym gdb
    $ gdb 7kaa
    (gdb) run
    ^C
    (gdb) backtrace
    (gdb) quit

> Versions of packages 7kaa depends on:
[...]
> ii  libopenal1       1:1.19.1-2

[1]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=548373
[2]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=551018
[3]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=562524
[4]: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=566634
-- 
Patrick "P. J." McDermott:  http://www.pehjota.net/
Lead Developer, ProteanOS:  http://www.proteanos.com/
Founder and CEO, Libiquity: http://www.libiquity.com/