[pulseaudio-tickets] [Bug 102927] New: TOSLINK connected audio pauses or drops to analog connector

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102927

            Bug ID: 102927
           Summary: TOSLINK connected audio pauses or drops to analog
                    connector
           Product: PulseAudio
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: daemon
          Assignee: pulseaudio-bugs at lists.freedesktop.org
          Reporter: henjo456 at gmail.com
        QA Contact: pulseaudio-bugs at lists.freedesktop.org
                CC: lennart at poettering.net

This issue was originally discussed in a thread on the Gentoo forums:
https://forums.gentoo.org/viewtopic-p-8120616.html

What happens is that the audio now and then pauses before it comes back.
Usually it's gone for a few seconds but some times more than that. I have two
speakers connected using a TOSLINK connector on the motherboard. If an analog
source is connected at the same time audio will switch over to that one
instead. When this occurs the pavucontrol interface shows the message
"Establishing connection to Pulseaudio. Please wait...". The problem seems
specific to Pulseaudio, this does not happen when the Audacious alsa plugin is
used for instance.

I have created two logs running pulseaudio -k && pulseaudio --log-level=4
--log-target=file:pulse.log --start.

Here's a log of the startup of Pulseaudio: https://pastebin.com/Mu4mT0z8
Here's a log of the error occurring: https://pastebin.com/kHykvjyp

The problem occurs on Pulseaudio v10.0, v10.99.1 and v11.0, all installed using
Gentoo's package manager portage.

As others suggested in the thread I have tried setting tsched=0' in
/etc/pulse/default.pa and disabled module-suspend-on-idle without any
improvement.

We are at least a handful of Gentoo users who have experienced this so it seems
as if it's not specific to a hardware error on my computer.

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