** Description changed: Since I installed ubuntu (10.04 then 10.10) on my new machine (asus p7h55d-m evo motherboard with ALC889 codec), I've been getting horrible, constant static/crackling distortion on every 7.1 channel. The sound card I'm using is the onboard Realtek audio, which has 6 jacks on the back, two on the front (headphones/microphone) and one s/pdif connector. Setting the mode to stereo did not improve the situation. Changing the speakers did not improve it either. Anyway, i get perfect sound in Windows, so this shouldn't be a hardware problem. The noise starts when Ubuntu is still booting. There is a constant, very loud static "background noise" overlaid with more variable "crackling" noises, which get worse at apparently random times (unrelated to sound being actually played). The signal-to-noise ratio is absolutely unbearable. Totally ruins listening to music. I tried changing the model in alsa-base.conf to several others, to no avail. I also tried installing new alsa/pulseaudio packages, which didn't fix the problem. This codec seems rather rare (not to be mixed up with ALC889A) which might explain the lack of improvement in new alsa builds in recent months. I also have a second sound card from my ATI graphics card, which outputs to hdmi, but i haven't tried digital audio in either card for lack of digital speakers. - alsa-info.sh output is at http://www.alsa-project.org/db/?f=eed5a8723339d6a84d27bfa34d9210f4f7bba87b - Also, booting on an old ubuntu livecd (9.04) gives the same issue, as well as with other distributions i've tried. + alsa-info.sh output is at http://www.alsa- + project.org/db/?f=eed5a8723339d6a84d27bfa34d9210f4f7bba87b + + I get many of these: + pulseaudio[5718]: ratelimit.c: 287 events + + Also, booting on an old ubuntu livecd (9.04) gives the same issue, as + well as with other distributions i've tried. ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: alsa-base 1.0.23+dfsg-1ubuntu4 ProcVersionSignature: Ubuntu 2.6.35-24.42-generic 2.6.35.8 Uname: Linux 2.6.35-24-generic x86_64 NonfreeKernelModules: fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: riton 28485 F.... pulseaudio - riton 28892 F.... alsamixer - /dev/snd/pcmC0D0p: riton 28485 F...m pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: riton 28485 F.... pulseaudio + riton 28892 F.... alsamixer + /dev/snd/pcmC0D0p: riton 28485 F...m pulseaudio Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xf79f8000 irq 49' - Mixer name : 'Realtek ALC889' - Components : 'HDA:10ec0889,10438435,00100004' - Controls : 36 - Simple ctrls : 21 + Card hw:0 'Intel'/'HDA Intel at 0xf79f8000 irq 49' + Mixer name : 'Realtek ALC889' + Components : 'HDA:10ec0889,10438435,00100004' + Controls : 36 + Simple ctrls : 21 Card1.Amixer.info: - Card hw:1 'Generic'/'HD-Audio Generic at 0xf7afc000 irq 50' - Mixer name : 'ATI R6xx HDMI' - Components : 'HDA:1002aa01,00aa0100,00100200' - Controls : 4 - Simple ctrls : 1 + Card hw:1 'Generic'/'HD-Audio Generic at 0xf7afc000 irq 50' + Mixer name : 'ATI R6xx HDMI' + Components : 'HDA:1002aa01,00aa0100,00100200' + Controls : 4 + Simple ctrls : 1 Card1.Amixer.values: - Simple mixer control 'IEC958',0 - Capabilities: pswitch pswitch-joined penum - Playback channels: Mono - Mono: Playback [on] + Simple mixer control 'IEC958',0 + Capabilities: pswitch pswitch-joined penum + Playback channels: Mono + Mono: Playback [on] Date: Thu Jan 20 22:18:52 2011 InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) PackageArchitecture: all ProcEnviron: - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash SelectedCard: 0 Intel HDA-Intel - HDA Intel SourcePackage: alsa-driver Symptom: audio Title: [Realtek ALC889] Playback problem dmi.bios.date: 07/02/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1503 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P7H55D-M EVO 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.:bvr1503:bd07/02/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7H55D-MEVO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/705633 Title: [Realtek ALC889] Horrible Sound distortion -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
