I have similar problem. After every start system, in top right corner displaying Volume Notification (Mute), but once.
-- 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/1585084 Title: Volume notification keeps popping up constantly(the notifyosd bubble on top-right corner) Status in pulseaudio package in Ubuntu: Confirmed Bug description: I upgraded to Ubuntu 16.04 yesterday, I did a clean install while preserving the home directory which is mounted in a separate partition. Even during the installation I had constant volume notification bubble appearing on the top-right corner of my screen, it would come and go about twice every minute. I just thought it was due to installing hardware drivers or something but the problem persisted even when I booted into the freshly installed system. I did some searching and two users reported the exact problem. And one more suggested this happens because constant disconnect and reconnect of the sound card which makes sense as the sound settings flashes briefly during every popup. Someone on IRC suggested to kill pulseaudio and thus restart it, that does not fix the issue. I also tried the Live environment thinking it might be due to some old config files in home partition (which was preserved during upgrade), but this problem happens in the live environment as well, which makes sense because it was present during installation as well. Users with the same issue: http://ubuntuforums.org/showthread.php?t=2323815 http://askubuntu.com/questions/773008/constant-volume-osd-in-16-04 http://askubuntu.com/questions/767466/sound-card-being-disconnected-reconnected-constantly Thanks. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: pulseaudio 1:8.0-0ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8 Uname: Linux 4.4.0-22-generic x86_64 ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: sidd 1651 F.... pulseaudio /dev/snd/controlC0: sidd 1651 F.... pulseaudio /dev/snd/controlC1: sidd 1651 F.... pulseaudio CurrentDesktop: Unity Date: Tue May 24 12:31:12 2016 InstallationDate: Installed on 2016-05-23 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1) SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/23/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0705 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: M5A97 EVO dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0705:bd08/23/2011:svnTobefilledbyO.E.M.:pnTobefilledbyO.E.M.:pvrTobefilledbyO.E.M.:rvnASUSTeKComputerINC.:rnM5A97EVO:rvrRev1.xx:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To be filled by O.E.M. dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: To be filled by O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1585084/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : firstname.lastname@example.org Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp