Alsa is reporting that headphones are repeatedly plugged in and out, and that makes pulseaudio switch between headphones and spdif output. I'd guess that's a hardware defect. You can work around the problem by commenting out module-switch-on-port-available in /etc/pulse/default.pa. That will stop the output switching.
The crash seems to happen when a stream (in this case a bell sound from gnome shell) stops during an output switch. I don't know how that's possible, I'll continue investigation later.
Alsa is reporting that headphones are repeatedly plugged in and out, and that makes pulseaudio switch between headphones and spdif output. I'd guess that's a hardware defect. You can work around the problem by commenting out module- switch- on-port- available in /etc/pulse/ default. pa. That will stop the output switching.
The crash seems to happen when a stream (in this case a bell sound from gnome shell) stops during an output switch. I don't know how that's possible, I'll continue investigation later.