This bug is missing log files that will aid in diagnosing the problem. >From a terminal window please run:
apport-collect 1380046 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1380046 Title: [AV200 - Xonar STX, playback] Loud pop when switching to headphones Status in “alsa-driver” package in Ubuntu: New Status in “linux” package in Ubuntu: Incomplete Bug description: When switching the port to either headphone ports from the speaker port there is a loud pop in the headphones. When I am playing music through the speakers at 100% volume and then switch, I can hear the music at a very loud volume through the headphones for a fraction of a second before dropping to the proper headphones volume which is much lower. Even if I mute the output before switching ports there is still a pop although not nearly as loud. I believe this is a driver issue (oxygen/virtuoso). The Essense STX uses a relay to switch between the speaker and headphones ports. I am guessing the the power for the speaker (line out) port is much higher than that used for the headphones port and the drivers need to mute the sound at a hardware level before switching to elmininate the pop. On Windows when switching to and from speaker and headphones port the output would be muted for almost a second as the port was switched so there was no pop. On Ubuntu there is no delay when switching ports. I have looked at the driver source code and there is an anti_pop_delay of 800 milliseconds used on the Xonar init method. I think this same delay should probably be added when switching to the headphone ports. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 NonfreeKernelModules: fglrx ApportVersion: 2.14.1-0ubuntu3.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: michael 20842 F.... pulseaudio /dev/snd/controlC0: michael 20842 F.... pulseaudio /dev/snd/pcmC0D0p: michael 20842 F...m pulseaudio /dev/snd/controlC1: michael 20842 F.... pulseaudio CurrentDesktop: Unity Date: Sat Oct 11 22:50:15 2014 InstallationDate: Installed on 2014-10-07 (3 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:STX successful Symptom_Card: HD Webcam C910 - USB Device 0x46d:0x821 Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: None of the above Title: [AV200 - Xonar STX, playback] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/20/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1401 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: P8H77-M PRO dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1401:bd08/20/2013:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnP8H77-MPRO:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1380046/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp