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[Bug 1040048] Loss of audio after logging out of standard Gnome, then logging into SLE Gnome.
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Thu, 25 May 2017 08:52:39 +0000
  • Message-id: <bug-1040048-21960-yGHM65vo48@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1040048
http://bugzilla.opensuse.org/show_bug.cgi?id=1040048#c3

--- Comment #3 from Moritz Rakow <moritzrakow@xxxxxx> ---
Lost audio again, this time after suspending in standard GNOME. When waking up
the machine, audio was lost in GNOME.

Differences to before:

* This time, no microphone was detected at all.
* The audio device was named "Dummy-Ausgabe". Note that neither my system
language nor user language are set to German, but the user language had been
set to German previously.
* After logging out, sound was working fine on the login screen.
* Loggin back in, sound is fine.

I've checked for running pulseaudio, as you suggested, on several occasions.


## Summary of findings

* After suspend/wake-up, there was an old pulseaudio that did not work. It is
plausible that when that was started the user language *had* been German. This
would explain the device name "Dummy-Ausgabe". This process had still been
alive after logout. Not sure when it died.
* gdm started its own pulseaudio, which worked. Note that the old pulseaudio
was still running at that time.
* On logging in at 09:20, a new pulseaudio was started that also works. At
this point, the old pulseaudio is not running anymore.


## Output of `ps aux | grep pulseaudio` at different times

My user name is "ram".

After suspend/wake-up when audio was dead:

```
ram 2256 1.3 1.1 792188 40816 ? S<l May23 31:15
/usr/bin/pulseaudio --start --log-target=syslog
ram 10116 0.0 0.0 10548 1620 pts/0 S+ 09:15 0:00 grep
--color=auto pulseaudio
```

Then in VT1, after log-out, when sound was working fine in gdm:

```
ram 2256 1.3 1.1 398948 40516 ? S<l May23 31:21
/usr/bin/pulseaudio --start --log-target=syslog
gdm 10354 0.0 0.3 567220 11156 ? S<l 09:15 0:00
/usr/bin/pulseaudio --start --log-target=syslog
ram 10502 0.0 0.0 10548 1608 tty1 S+ 09:16 0:00 grep
--color=auto pulseaudio
```

Finally, when audio was back after logging in again:

```
ram 2210 0.0 0.3 518420 11964 ? S<l 09:20 0:00
/usr/bin/pulseaudio --start --log-target=syslog
ram 3057 0.0 0.0 10548 1596 pts/0 S+ 09:35 0:00 grep
--color=auto pulseaudio
```

Should we change the name of the bug report to include this after-suspend
scenario?

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