Default sink/source is not always preserved on suspend/resume

[David Henningsson]

1) Select your USB headset as default sink
2) Suspend
3) Resume
4) Notice that your internal sound card is now the default sink

The root cause of this problem is suspend/resume timing. USB stack (and bluetooth stack?) is not kept consistent across suspend/resume, and might start to dismantle before the PulseAudio process freezes, or is not fully assembled when PulseAudio starts again. As a result, PulseAudio sees this as the USB headset being unplugged and then plugged in again.

Fixing this for all use cases is tricky and probably requires the priority lists Colin Guthrie plans on implementing post v1.0.

[David Henningsson (diwic)]

I don't think this is fixed, but it's not a blocker for cert either IMO.

[David Henningsson (diwic)]

A year later; Tanu is working on this upstream (from time to time) as part of a bigger routing system change, but it's a complicated story and progress is slow.

[Rolf Leggewie (r0lf)]

quantal has seen the end of its life and is no longer receiving any updates. Marking the quantal task for this ticket as "Won't Fix".

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 11.04 (natty) reached end-of-life on October 28, 2012.
Ubuntu 10.10 (maverick) reached end-of-life on April 10, 2012.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Daniel van Vugt (vanvugt)]

Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]