It is currently not possible to start a voice call

[florian-sabonchi]

Description

Currently it is not possible for me to start a call with another person regardless of whether the person uses another home server or not. When I look at the log of the desktop I get the following error:
[14002:0207/130359.115715:ERROR:audio_rtp_receiver.cc(89)] AudioRtpReceiver::OnSetVolume: No audio channel exists

Steps to reproduce

• Start a Phone Call from Client or Web

Describe how what happens differs from what you expected.
The call partner cannot be heard

Version information

• Platform: Desktop
  For the desktop app:
• OS: Linux Mint?
• Version: Version of Element: 1.7.20
  Version of olm: 3.2.1
  Version of Matrix: v1.27.0rc1

[35609902357]

As a temporary workaround go in the Voice & Video settings and select Built-in Audio Analog Stereo instead of Default Device for Audio Output and Microphone, this should make it work until the next launch

[dbkr]

Can you send debug logs for this? Settings / Help & About / Submit Debug Logs. Can you hear the other person if you adjust the volume manually? What audio output devices appear in voice & video settings?

[florian-sabonchi]

Can you send debug logs for this? Settings / Help & About / Submit Debug Logs. Can you hear the other person if you adjust the volume manually? What audio output devices appear in voice & video settings?

Yes of course i will do that later
Thanks for your reply

[jryans]

@FlorianJSa Did you get a chance to send them?

[florian-sabonchi]

@FlorianJSa Did you get a chance to send them?

Done

[jryans]

@FlorianJSa Thanks we received the logs, but I did not notice any evidence of calls... The logs only go back to 2021-03-04, have you tried calling in the last few days, or only when the issue was reported? You may need to try calling again, then immediately submit debug logs, and include the link to this issue.

[florian-sabonchi]

@FlorianJSa Thanks we received the logs, but I did not notice any evidence of calls... The logs only go back to 2021-03-04, have you tried calling in the last few days, or only when the issue was reported? You may need to try calling again, then immediately submit debug logs, and include the link to this issue.

Thanks for your reply, yes i have tried to call someone. Maybe it will help if I try again and send the logs again

[v-byte-cpu]

I have the same issue

[florian-sabonchi]

Do not hesitate to contact me if you find a solution to fix this problem. I have been looking for a solution for months

[maste9]

It seems that I'm dealing with the same problem since last week on several ubuntu-based linux distributions. The problem seems to be related to device privileges and some interference with pulse audio. I documented my tests in the ZorinOS-Forum at https://forum.zorin.com/t/microphone-error-using-chat-clients/

The problem is consistent with official repo, flatpak and snap. I tested with ubuntu 20.04 based ZorinOS as with Ubuntu 22.04.