shairport-sync keeps restarting for changed output device

Volumio Development Bug reports
1

Hi,

when I try to play music via Airplay, it is only possible for ~5 seconds, then shairport-sync restarts, apparently for a changed output device.

log:

Jun 20 08:02:55 prima volumio[1539]: info: [1529481775899] Starting Shairport Sync
Jun 20 08:02:59 prima systemd[1]: Stopping ShairportSync AirTunes receiver...
Jun 20 08:02:59 prima systemd[1]: Starting ShairportSync AirTunes receiver...
Jun 20 08:02:59 prima systemd[1]: Started ShairportSync AirTunes receiver.
Jun 20 08:02:59 prima shairport-sync[1644]: Successful Startup
Jun 20 08:02:59 prima volumio[1539]: info: [1529481779307] Shairport-Sync Started
Jun 20 08:03:02 prima volumio[1539]: info: Output device has changed, restarting Shairport Sync
Jun 20 08:03:02 prima systemd[1]: Stopping ShairportSync AirTunes receiver...
Jun 20 08:03:02 prima systemd[1]: Starting ShairportSync AirTunes receiver...
Jun 20 08:03:02 prima systemd[1]: Started ShairportSync AirTunes receiver.
Jun 20 08:03:02 prima shairport-sync[1728]: Successful Startup
Jun 20 08:03:02 prima volumio[1539]: info: [1529481782856] Shairport-Sync Started
Jun 20 08:14:53 prima volumio[1539]: at ShairportSyncReaderUDP.<anonymous> (/volumio/app/plugins/music_service/airplay_emulation/index.js:159:34)
Jun 20 08:14:53 prima volumio[1539]: at ShairportSyncReaderUDP.emit (events.js:188:7)
Jun 20 08:14:53 prima volumio[1539]: at ShairportSyncReaderUDP.useData (/volumio/app/plugins/music_service/airplay_emulation/shairport-sync-reader/shairport-sync-reader-base.js:85:11)
Jun 20 08:14:53 prima volumio[1539]: at Socket.ShairportSyncReaderUDP._source.on.msg (/volumio/app/plugins/music_service/airplay_emulation/shairport-sync-reader/shairport-sync-reader-udp.js:21:9)
Jun 20 08:14:58 prima volumio[6704]: info: [1529482498707] Starting Shairport Sync
Jun 20 08:15:02 prima systemd[1]: Stopping ShairportSync AirTunes receiver...
Jun 20 08:15:02 prima systemd[1]: Starting ShairportSync AirTunes receiver...
Jun 20 08:15:02 prima systemd[1]: Started ShairportSync AirTunes receiver.
Jun 20 08:15:02 prima shairport-sync[6844]: Successful Startup
Jun 20 08:15:02 prima volumio[6704]: info: [1529482502286] Shairport-Sync Started
Jun 20 08:15:05 prima volumio[6704]: info: Output device has changed, restarting Shairport Sync
Jun 20 08:15:05 prima systemd[1]: Stopping ShairportSync AirTunes receiver...
Jun 20 08:15:05 prima systemd[1]: Starting ShairportSync AirTunes receiver...
Jun 20 08:15:05 prima systemd[1]: Started ShairportSync AirTunes receiver.
Jun 20 08:15:05 prima shairport-sync[6923]: Successful Startup
Jun 20 08:15:05 prima volumio[6704]: info: [1529482505623] Shairport-Sync Started

It’s an RPI3B with a Hifiberry DAC+ and volsimpleequal.

Can I somehow force shairport-sync to keep its initial output-device? It seems to have to do with volsimpleequal, but I badly need the equalizer plugin for my setup (Mids way too harsh).

Kind regards

Matthias