Using Simultaneous Output within Pulseaudio Preferences slightly delays one audio output source over the other, maybe only by 1/4 or a second or so, but it's a noticeable amount to create an annoyance and un-unified musical experience. Please fix.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: paprefs 0.9.10-1
ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4
Uname: Linux 3.16.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Dec 24 10:51:54 2014
InstallationDate: Installed on 2014-11-08 (46 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
LANGUAGE=en_US
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: paprefs
UpgradeStatus: No upgrade log present (probably fresh install)
Setting up simultaneous analog and digital output results in relative lag between the analog and digital outputs on my Nforce2 motherboard with onboard sound.
This is using the example provided in the pulseaudio archlinux wiki, here:
https:/
.. with the following "default.pa" entries:
### Load analog device
load-module module-alsa-sink device=hw:0,2
load-module module-combine-sink sink_name=combined
set-default-sink combined
I can be watching a movie on VLC and a relative delay between analog and digital outputs can develop, so that a sound will come out one set of speakers half a second after they come out the other, making movies unwatchable. A fast way to make the problem occur is to change tracks on Clementine, making use of the crossfade feature, resulting in an element of mixing. The relative lag is non-fixed and sporadic.
This problem does not occur using a custom .asoundrc to setup simultaneous digital and analog output using ALSA without Pulseaudio.