[crash] Native crash: SIGABRT when setting Speaker volume to 0%

[Ashu11-A]

Crash details

Diagnostic info

Field	Value
App version	1.3.0
OS	Zorin OS 18.1 (Ubuntu 24.04 noble base), Linux 7.0.0-31-generic x86_64
Audio stack	PipeWire 1.0.5, WirePlumber 1.0.5, pactl 16.1 (libpulse 16.1.0)

Crash log

thread 'main' (35172) panicked at libpulse-binding-2.30.1/src/operation.rs:51:9:
assertion failed: !ptr.is_null()

thread 'main' (35172) panicked at library/core/src/panicking.rs:225:5:
panic in a function that cannot unwind

thread caused non-unwinding panic. aborting.

Stack backtrace

std::sys::backtrace::BacktraceLock::print::DisplayBacktrace
core::fmt::write
std::sys::stdio::unix::Stderr::write_fmt
std::panicking::default_hook
splitwave_lib::install_panic_hook::{closure#0}
std::panicking::panic_with_hook
std::panicking::panic_handler
std::__rust_end_short_backtrace
__rustc::rust_begin_unwind
core::panicking::panic_nounwind_fmt
core::panicking::panic_nounwind
core::panicking::panic_cannot_unwind
webkit2gtk::WebContextExt::register_uri_scheme::callback_func
<unknown> (frames 14-30, gtk / glib internals)
g_main_context_iteration
gtk_main_iteration_do
gtk::main_iteration_do
tao::EventLoop::run
tauri_runtime_wry::Wry::run
tauri::App::run::<splitwave_lib::run>
splitwave_lib::run
std::rt::lang_start
main
__libc_start_main
_start

Steps to reproduce

1. Open Splitwave and create Pipeline.
2. Add any audio source and Speaker output.
3. Select any physical output and connect L/R.
4. On the Speaker node, drag Volume to 0%.
5. App crashes instantly. Relaunch shows "Splitwave crashed last time" in SAFE MODE.

Screen recording

2026-09-23.09-57-19.mp4

Additional context

• Pipeline file remains intact after crash (~/.local/share/com.horuse.splitwave/pipelines.json).
• ~/.local/share/com.horuse.splitwave/logs/crashes.jsonl was empty; details from journalctl.

[Horuse]

Thanks for the detailed issue report! This will be fixed in the next release. I’ll try to get the update out by the end of this week