pulseaudio distorts VLC audio
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
pulseaudio (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: pulseaudio
Audio quality full of hiss (similar to what it might sound like if you pulled your headphone/speaker plug out halfway). The hiss distortion is constant and affects all VLC 1.1.8 audio. True for all audio sources: internet stream, mp3, cd, flv, etc.
Problem occurred on a clean install of Ubuntu 11.04 beta (32-bit) using only the included repositories, and updated as of today's date. Pulseaudio version: 1:0.9.22+
Disabling pulseaudio allows VLC to play cleanly. Have not observed audio distortion with other players using pulseaudio.
Would like to see VLC operate properly with pulseaudio. I had no issues on same machine using Ubuntu 10.10 and VLC 1.1.4.
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: pulseaudio 1:0.9.22+
ProcVersionSign
Uname: Linux 2.6.38-7-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0p: blaine 2039 F...m vlc
Card0.Amixer.info:
Card hw:0 'Audigy2'/'SB Audigy 2 [SB0350b] (rev.4, serial:0x20061102) at 0xcc80, irq 19'
Mixer name : 'SigmaTel STAC9750,51'
Components : 'AC97a:83847650'
Controls : 211
Simple ctrls : 46
Card1.Amixer.info:
Card hw:1 'U0x46d0x8ca'/'USB Device 0x46d:0x8ca at usb-0000:00:1d.7-6, high speed'
Mixer name : 'USB Mixer'
Components : 'USB046d:08ca'
Controls : 2
Simple ctrls : 1
Card1.Amixer.
Simple mixer control 'Mic',0
Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum
Capture channels: Mono
Limits: Capture 0 - 3072
Mono: Capture 0 [0%] [18.00dB] [off]
Card2.Amixer.info:
Card hw:2 'Generic'/'HD-Audio Generic at 0xefddc000 irq 43'
Mixer name : 'ATI R6xx HDMI'
Components : 'HDA:1002aa01,
Controls : 4
Simple ctrls : 1
Card2.Amixer.
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Apr 5 06:32:13 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
ProcEnviron:
LANGUAGE=en_US:en
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/08/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A07
dmi.board.name: 0HJ054
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.
dmi.product.name: Dell DM051
dmi.sys.vendor: Dell Inc.
Changed in pulseaudio (Ubuntu): | |
status: | New → Incomplete |
Changed in pulseaudio (Ubuntu): | |
status: | Incomplete → Triaged |
Changed in pulseaudio (Ubuntu): | |
status: | Incomplete → Confirmed |
affects: | pulseaudio (Ubuntu) → vlc (Ubuntu) |
affects: | vlc (Ubuntu) → pulseaudio (Ubuntu) |
Hi Blaine and thanks for your bug report. I tried vlc here but could not reproduce it, and I'm not sure what could be causing it. If you feel like investigating further, here are some possible ideas:
1) Construct a PulseAudio log and see if it says anything about it: https:/ /wiki.ubuntu. com/PulseAudio/ Log
2) Do the same thing but add PULSE_NO_SIMD=1 on the command line in front of the command that starts pulseaudio, and see if that helps
3) Try to create an audio sample by capturing the monitoring stream and see if the hiss is present there, if so, attach the resulting wave file here.