lightdm should not have a pulseaudio config

[Shevek]

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)

[Robert Ancell (robert-ancell)]

This would need to be fixed in the appropriate greeter - LightDM does not write any files in /home/lightdm.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Shevek (r-launchpad-anarres-org)]

@robert-ancell Go on, give us a clue. Who _should_ we report this to? We've gotten so far as to figure out WHY volume mutes when the screen locks, which is frankly killer for any RT AV work, and now I'm lost in the maze of twisty microservices, all alike.

I'm just a user here, yet I've diagnosed the issue, and taken the plunge of reporting a bug to the monster that is Launchpad in the full expectation that in a year or so I'll get an email telling me that nobody gave a damn, and the bot has closed it. But here is an unrivaled opportunity to do better.