Sound is disabled when VLC hangs

[Pierre Rudloff]

When VLC hangs a bit (e.g. if I play a video with a lot of programs running), it disables the sound, and I have to disable the audio track then set it to track 1 again in order to have sound again.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: vlc 1.1.12-2~oneiric1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic i686
ApportVersion: 1.23-0ubuntu4
Architecture: i386
CheckboxSubmission: c7d80324493c70279d4c9c0e025299cc
CheckboxSystem: 7e42599bda39ea7ff8b528272b6ef52b
Date: Thu Dec 22 16:38:37 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: vlc
UpgradeStatus: No upgrade log present (probably fresh install)

[Rémi Denis-Courmont (rdenis)]

You mean VLC stops doing audio or VLC blocks audio for all other applications? In the latter case, it would be a PulseAudio bug.

In any case, we would need the verbose VLC log.

[Pierre Rudloff (rudloff)]

Only VLC's audio is stopped.

[Pierre Rudloff (rudloff)]

I have enabled logging in the prefs but the log file is not created. What am I doing wrong ?

I also noticed this issue sometimes happen when I pause a video too.

[Rémi Denis-Courmont (rdenis)]

'vlc -vv' generates the log.

[Pierre Rudloff (rudloff)]

Here is a log.
Around line 410, I opened a lot of Firefox windows to make VLC hang, which eventually disabled the sound.
At the end (after line 510, I guess) I disabled audio then re-enabled channel #1, which brought the sound back.

[Rémi Denis-Courmont (rdenis)]

I don't really see any bug here. It just looks that your system is so overloaded that VLC cannot decode audio in time.

[Pierre Rudloff (rudloff)]

The thing is it never starts playing audio again (if I don't disable/re-enable it), even when the CPU load decreases and video playback is back to normal.