Hello, I see in your log messages the following lines: [ 55.292527] audit_printk_skb: 138 callbacks suppressed [ 55.292532] type=1400 audit(1402375327.976:73): apparmor="DENIED" operation="open" parent=1 profile="/usr/lib/telepathy/mission-control-5" name="/usr/share/gvfs/remote-volume-monitors/" pid=2145 comm="mission-control" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
Can you try the following to turn off rate limiting of kernel messages? sudo sh -c "echo 0 > /proc/sys/kernel/printk_ratelimit" Try again, and then see if dmesg output includes more DENIED messages from apparmor. Thanks ** Information type changed from Private Security to Public Security -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1328374 Title: [HDA-Intel - HDA NVidia, playback] Playback problem Status in “alsa-driver” package in Ubuntu: New Bug description: Choppy sound when playing music, videos, etc. Gets worse when maximizing the volume ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.11.0-15.25~precise1-generic 3.11.10 Uname: Linux 3.11.0-15-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.11.0-15-generic. ApportVersion: 2.0.1-0ubuntu17.6 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cy 2012 F.... pulseaudio /dev/snd/pcmC0D0p: cy 2012 F...m pulseaudio Card0.Amixer.info: Card hw:0 'NVidia'/'HDA NVidia at 0xdbf78000 irq 23' Mixer name : 'Realtek ID 662' Components : 'HDA:10ec0662,10ec0000,00100101' Controls : 37 Simple ctrls : 17 Date: Tue Jun 10 12:55:23 2014 InstallationMedia: Ubuntu 12.04.4 LTS "Precise Pangolin" - Release i386 (20140204) MarkForUpload: True PackageArchitecture: all ProcEnviron: SHELL=/bin/bash TERM=xterm PATH=(custom, no user) LANG=en_PH.UTF-8 LANGUAGE=en_PH:en SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:NVidia successful Symptom_Card: Built-in Audio - HDA NVidia Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: None of the above Title: [HDA-Intel - HDA NVidia, playback] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/20/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080015 dmi.board.name: EMX-MCP61D3-iCafe dmi.board.vendor: Emaxx Technologies, Inc dmi.board.version: V2.0 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.:bvr080015:bd01/20/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnEmaxxTechnologies,Inc:rnEMX-MCP61D3-iCafe:rvrV2.0: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. mtime.conffile..etc.modprobe.d.alsa.base.conf: 2014-06-10T12:40:03.137136 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1328374/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

