Thanks. It looks like your issues might be caused by these unsupported package versions you have installed:
ii libavcodec-extra 7:3.3.3-2~ubuntu16.04.1~ppa1 all FFmpeg library with extra codecs (metapackage) ii libavcodec-extra57:amd64 7:3.3.3-2~ubuntu16.04.1~ppa1 amd64 FFmpeg library with additional de/encoders for audio/video codecs ii libavdevice57:amd64 7:3.2.6-1~backport1.1~xenial amd64 FFmpeg library for handling input and output devices - runtime files ii libavfilter6:amd64 7:3.2.6-1~backport1.1~xenial amd64 FFmpeg library containing media filters - runtime files ii libavformat57:amd64 7:3.2.6-1~backport1.1~xenial amd64 FFmpeg library with (de)muxers for multimedia containers - runtime files ii libavresample3:amd64 7:3.3.3-2~ubuntu16.04.1~ppa1 amd64 FFmpeg compatibility library for resampling - runtime files ii libavutil55:amd64 7:3.3.3-2~ubuntu16.04.1~ppa1 amd64 FFmpeg library with functions for simplifying programming - runtime files Your system appears to be mixing and matching the standard ffmpeg packages from Ubuntu 16.04 (version 7:2.8.11-0ubuntu0.16.04.1) and nonstandard ones from PPAs. Please purge all PPAs from your system and retest: 1. sudo apt install ppa-purge 2. sudo ppa-purge .... (on all the PPAs you are using) 3. Retest and provide new output from 'dpkg -l | grep libav > libav.txt' -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1755144 Title: No audio on vlc or videos sound or video files Status in pulseaudio package in Ubuntu: Incomplete Bug description: Up until a few weeks ago there was no problem with playing sound from mp3 files. I have a pair of usb speakers. Audio plays Ok on them for video clips using Chrome (e.g. from BBC website). Using vlc 2.2.2 (from Ubuntu repos), neither a CD nor DVD (video is Ok) nor mp3 file plays audio. mp3 files play Ok using Rhythmbox. I've also tried vlc 3.0 with no success. Interestingly, the standard Videos app (Totem?) also doesn't play sound on these speakers either of an mp4 file (downloaded from YouTube, though it plays Ok on YouTube website using Chrome) or a DVD. Clemenetine plays mp3 files Ok. I first reported this as bug 1752267 as I thought that the problem was with vlc. On that bug, it was suggested that the problem is with Pulseaudio. Just now, I've tried to play sound through my monitor's built in speakers connected by hdmi (though the monitor displays Ok) with no success even though the built-in speakers play sound using pavucontrol when testing is invoked. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: pulseaudio 1:8.0-0ubuntu3.8 ProcVersionSignature: Ubuntu 4.4.0-116.140-generic 4.4.98 Uname: Linux 4.4.0-116-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: john 2410 F.... pulseaudio /dev/snd/controlC0: john 2410 F.... pulseaudio CurrentDesktop: Unity Date: Mon Mar 12 11:06:46 2018 InstallationDate: Installed on 2016-12-08 (458 days ago) InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/04/2015 dmi.bios.vendor: Intel Corp. dmi.bios.version: PYBSWCEL.86A.0043.2015.0904.1904 dmi.board.name: NUC5CPYB dmi.board.vendor: Intel Corporation dmi.board.version: H61145-404 dmi.chassis.type: 3 dmi.modalias: dmi:bvnIntelCorp.:bvrPYBSWCEL.86A.0043.2015.0904.1904:bd09/04/2015:svn:pn:pvr:rvnIntelCorporation:rnNUC5CPYB:rvrH61145-404:cvn:ct3:cvr: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1755144/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp