Listen only: No output devices are shown

[debuglevel]

Describe the bug When you join listen only on 2.6 (at least demo6.bigbluebutton.org), you cannot switch your output device:

This was possible on 2.5 (at least on my deployment)

To Reproduce Steps to reproduce the behavior:

1. Join "listen only"
2. Click on the chevron of the headphone button
3. You won't see any devices but only ...

Expected behavior Output devices should be shown.

Actual behavior Only a ... is shown.

BBB version: Client: 242 2.6.0-beta2

Desktop (please complete the following information):

• OS: Windows
• Browser: Chrome

[ak4t0sh]

Reproduced today on https://test.bigbluebutton.org

[prlanzarin]

I'm unable to reproduce this in a Windows VM (as the OP referenced). Maybe I'm missing something. Can the op re-test on demo/latest 2.6? Just so that I can decide whether I consider this fixed or not. Cc @debuglevel

[ak4t0sh]

Reproduced today using firefox 102.10.0esr and Chromium 112.0.5615.49 on debian on https://test.bigbluebutton.org/ In microphone mode :

In listen only mode :

edit : looking at my screenshots it seems that my headset is not detected as speakers (but it works correctly) in microphone mode too.

[ffdixon]

Can you test again on

https://test26.bigbluebutton.org/

We've made some updates in the latest release to better support FireFox.

[prlanzarin]

This is related to lack of gUM permission borking device enumeration (old problem, but my memory had failed me). Seems like we're missing a fallback case for the Default placeholder + there's some issue with subsequent enumerations even after microphone permission is granted afterwards. I'll not add a gUM request just for enumeration to work, though - so unfortunately listen-only users will be stuck with the default output device.