Public bug reported:
If the directory /var/lib/lightdm/.config/pulse exists, then whenever
the screen goes blank, the sound volume changes, mutes, or takes on some
other random parameters specified by this file. It does not reset on
unlocking the screen. This is an extraordinarily dumb behaviour which
can be temporarily remedied by deleting that directory, or swapping out
lightdm for xscreensaver.
Please make sure that lightdm cannot write a pulse config file, or that
consolekit or whatever for pulseaudio does not use system users as
sources for parameters, and so forth.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: lightdm 1.18.3-0ubuntu1.1
ProcVersionSignature: Ubuntu 4.4.0-75.96-generic 4.4.59
Uname: Linux 4.4.0-75-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Tue May 2 11:23:46 2017
InstallationDate: Installed on 2016-10-09 (204 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
SourcePackage: lightdm
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1687722
Title:
lightdm should not have a pulseaudio config
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