[System Product Name, VIA VT1708S, Green Line Out, Rear] Sound is distorted

[Joshua Sturgill]

I'm not convinced this is even a bug but this appears to be the official process for trouble-shooting my problem, according to the "DebuggingSoundProblems" page on the official Ubuntu website. Prior to upgrading to 12.04, my sound work mostly-alright, from the rear panel, though the front-panel didn't work properly at all. After upgrading earlier today, the rear panel is distorted and crappy-sounding, and has a constant whistling sound at a low volume. Nothing in the alsa-mixer looks "too loud", and I don't know where else to look for problems.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: nvidia
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu6
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: SB [HDA ATI SB], device 0: VT1708S Analog [VT1708S Analog]
   Subdevices: 2/2
   Subdevice #0: subdevice #0
   Subdevice #1: subdevice #1
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: devlocke 2174 F.... pulseaudio
                      devlocke 2594 F.... xfce4-volumed
                      devlocke 3268 F.... alsamixer
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xf7ff0000 irq 16'
   Mixer name : 'VIA VT1708S'
   Components : 'HDA:11060397,1043836c,00100000'
   Controls : 46
   Simple ctrls : 22
Date: Fri Apr 27 23:42:07 2012
InstallationMedia: Xubuntu 11.04 "Natty Narwhal" - Release i386 (20110427)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:SB successful
Symptom_Card: Built-in Audio - HDA ATI SB
Symptom_Jack: Green Line Out, Rear
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: Digital clip or distortion, or "overdriven" sound
Title: [System Product Name, VIA VT1708S, Green Line Out, Rear] Sound is distorted
UpgradeStatus: Upgraded to precise on 2012-04-28 (0 days ago)
dmi.bios.date: 08/18/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0507
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: M4A79XTD EVO
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.:bvr0507:bd08/18/2009:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM4A79XTDEVO:rvrRevX.0X:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
mtime.conffile..etc.modprobe.d.alsa.base.conf: 2011-11-11T16:14:20.730201

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]