Highpitched rattling like sound with 5.1 surround configuration
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
PulseAudio |
Invalid
|
Undecided
|
Unassigned | ||
pulseaudio (Ubuntu) |
Fix Released
|
Medium
|
David Henningsson | ||
Lucid |
Won't Fix
|
Undecided
|
Unassigned | ||
Maverick |
Fix Released
|
Undecided
|
Luke Yelavich |
Bug Description
SRU justification:
Pulseaudio contains volume scaling code optimized for the MMX and SSE instruction sets on X86, and optimized volume scaling code for some ARM CPU variants. This code initially did not deal with unusual numbers of channels, 3, 5, 6 and 7 on x86 using the SSE instruction set, and 3 on X86 using the MMX instruction set, and ARM. This resulted in various odd sounds, such as indicated in the original bug report below, and other comments in this report. This SRU fixes the code to correctly deal with the above number of channels, 6 channels being common for 5.1 audio output. Thanks to David Henningsson for the patch.
Regression potential:
There is a very low chance of this regressing other parts of PulseAudio. The patch in question only touches the optimized code source files in the source tree, so the chance of this affecting other users detrimentally is extremely unlikely.
This fix is in the above linked pulseaudio natty branch, ready for upload once natty is open for general development.
Original bug report follows:
Binary package hint: pulseaudio
I'm hearing a high pitched rattling sound when I have pulseaudio set to 5.1 surround
I set PulseAudio to 5.1 surround via the PulseAudio Volume Manager under the Configuration Tab
I'm running the Karmic Koala beta with all the newest Updates
I have a 82801JI (ICH10 Family) HD Audio Controller
I've tried other settings under the Configuration Tab, Analog Stereo seems to work perfectly but I have a 5.1 Surround Speaker Setup.
This problem seems to get worse as I increase the volume through pulseaudio, if I change the volume of a individual channel it gets almost impossible to listen to anything, all I can hear is a high pitched rattling like sound. However if I set the volume of channels individually through 'alsamixer' it doesn't screw up at all.
ProblemType: Bug
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/pcmC0D0c: chris 2096 F...m pulseaudio
/dev/snd/pcmC0D0p: chris 2096 F...m pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf9ff8000 irq 22'
Mixer name : 'Realtek ALC1200'
Components : 'HDA:10ec0888,
Controls : 40
Simple ctrls : 22
Date: Wed Oct 7 18:01:59 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelMo
Package: pulseaudio 1:0.9.18-0ubuntu3
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
Uname: Linux 2.6.31-pae i686
Changed in pulseaudio (Ubuntu): | |
status: | New → Confirmed |
Changed in pulseaudio (Ubuntu): | |
importance: | Undecided → High |
assignee: | nobody → Canonical Desktop Team (canonical-desktop-team) |
tags: |
added: regression-release removed: regression-potential |
Changed in pulseaudio (Ubuntu): | |
status: | Confirmed → Triaged |
Changed in pulseaudio (Ubuntu): | |
importance: | High → Medium |
tags: | added: patch |
tags: | added: karmic |
summary: |
- Highpitched Rattling like Sound with 5.1 Surround Configuration on - Karmic Koala + Highpitched rattling like sound with 5.1 surround configuration |
Changed in pulseaudio (Ubuntu): | |
assignee: | Luke Yelavich (themuso) → David Henningsson (diwic) |
status: | Triaged → In Progress |
Changed in pulseaudio (Ubuntu Maverick): | |
assignee: | nobody → Luke Yelavich (themuso) |
status: | New → In Progress |
description: | updated |
description: | updated |
Changed in pulseaudio (Ubuntu Maverick): | |
status: | In Progress → Fix Committed |
tags: | added: verification-needed |
tags: |
added: verification-done removed: verification-needed |
Changed in pulseaudio (Ubuntu Maverick): | |
status: | Fix Committed → Fix Released |
Changed in pulseaudio (Ubuntu): | |
status: | In Progress → Fix Released |
Changed in pulseaudio: | |
status: | New → Invalid |
Architecture: i386 controlC0: chukysoria 2088 F.... pulseaudio controlC1: chukysoria 2088 F.... pulseaudio 102801cd, 00102201 HDA:14f12bfa, 14f100c3, 00090000' ture: i386 ature: Ubuntu 2.6.31- 14.47-generic
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xefffc000 irq 21'
Mixer name : 'SigmaTel STAC9200'
Components : 'HDA:83847690,
Controls : 13
Simple ctrls : 7
Card1.Amixer.info:
Card hw:1 'PSC805'/'Philips Electronics Philips PSC805 at usb-0000:00:1d.2-1, full speed'
Mixer name : 'USB Mixer'
Components : 'USB0471:0155'
Controls : 4
Simple ctrls : 1
DistroRelease: Ubuntu 9.10
Package: pulseaudio 1:0.9.19-0ubuntu2
PackageArchitec
ProcEnviron:
SHELL=/bin/bash
LANG=es_ES.UTF-8
ProcVersionSign
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare vboxusers