Public bug reported: The audio output presents noise both on the front headphone output and on the rear speaker port. Audio tracks are played correctly except for the noise level. The noise disappears if i mute the outputs and the noise level is controlled by the alsamixer "Master" and "Front" levels. It does't change with the PCM slider. every other slider availbale is set to minimum and doesn't affect the level. Now I have installed Xubuntu 11.10 but I had the same problem with xubuntu 10.04.
ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: alsa-base 1.0.24+dfsg-0ubuntu2 ProcVersionSignature: Ubuntu 3.0.0-16.29-generic 3.0.20 Uname: Linux 3.0.0-16-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu4 Architecture: amd64 Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf9ff8000 irq 42' Mixer name : 'Realtek ALC889' Components : 'HDA:10ec0889,10438435,00100004' Controls : 37 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'NVidia'/'HDA NVidia at 0xfbafc000 irq 16' Mixer name : 'Nvidia GPU 0b HDMI/DP' Components : 'HDA:10de000b,10de0101,00100100' Controls : 16 Simple ctrls : 4 Date: Mon Mar 26 02:19:03 2012 InstallationMedia: Xubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) PackageArchitecture: all ProcEnviron: PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel successful Symptom_Card: Internal Audio - HDA Intel Symptom_Jack: Green Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: High background noise, or volume is too low Title: [System Product Name, Realtek ALC889, Green Line Out, Rear] Background noise or low volume UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/02/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0401 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P7H55-M PRO dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0401:bd12/02/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7H55-MPRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer modified.conffile..etc.modprobe.d.alsa.base.conf: [modified] mtime.conffile..etc.modprobe.d.alsa.base.conf: 2012-03-26T02:15:58.842202 ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug oneiric -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/964891 Title: [System Product Name, Realtek ALC889, Green Line Out, Rear] Background noise, both from speakers and headphones ports. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/964891/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs