On some Linux setups the game was silent. The device opened, but its data callback ran once and stopped, with no error. The music position never moved.
This is cpal 0.17.1's ALSA bug (RustAudio/cpal#1099, "Data callback called only once on ALSA"), fixed in 0.17.3 by setting playback's `avail_min` to one period. benilla's stream starts only at the start threshold, which is exactly that case. cpal goes to 0.17.3.
alsa 0.11 and bevy_audio's unbuilt cpal 0.15 cannot share a lock (`links = "alsa"`). A lock-only stand-in for alsa 0.9 settles that, documented in `third_party/alsa-0.9`.
The realtime-fallback log line now says what happens on each platform. Following the default device gets its `Deviation:` line: 1.12.1 initialises sound once (`0x7a4330`).
Built on macOS, with Linux and Windows linted.
Fixes#820🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Sam Sung
d93c231d8e