[Several MacBooks (with PCI SSID 10de:cb89)] Choppy sound. Videos play double speed
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Luke Yelavich |
Bug Description
For a while now on precise I can't watch videos or listen to audio in any app as it's choppy. So audio appears to be at double speed, resulting in the video going at double speed.
I have tested in spotify, mplayer, totem, flash (youtube) and they all exhibit the same behaviour. Even the audio test sound thing in control centre 'front left' sounds choppy.
Oddly if I record the audio directly from the sound card to a wav file using sox and then play it back on another machine it plays fine. It's just outputting sound to the speakers that this machine appears to have problems with.
**** Current workaround ****
edit /etc/modprobe.
and add this row:
options snd-hda-intel position_fix=1
reboot your computer for changes to take effect.
****
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pulseaudio 1:1.1-0ubuntu4
ProcVersionSign
Uname: Linux 3.2.0-7-generic x86_64
NonfreeKernelMo
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.90-0ubuntu1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: Cirrus Analog [Cirrus Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
Card0.Amixer.info:
Card hw:0 'NVidia'/'HDA NVidia at 0xd3480000 irq 23'
Mixer name : 'Nvidia MCP89 HDMI'
Components : 'HDA:10134206,
Controls : 33
Simple ctrls : 13
Date: Wed Dec 28 16:03:22 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
SourcePackage: pulseaudio
UpgradeStatus: Upgraded to precise on 2011-12-22 (6 days ago)
dmi.bios.date: 06/01/10
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBP71.88Z.
dmi.board.name: Mac-F222BEC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAppleInc
dmi.product.name: MacBookPro7,1
dmi.product.
dmi.sys.vendor: Apple Inc.
Related branches
CVE References
Changed in pulseaudio (Ubuntu): | |
assignee: | nobody → Canonical Desktop Team (canonical-desktop-team) |
Changed in pulseaudio (Ubuntu): | |
assignee: | Canonical Desktop Team (canonical-desktop-team) → Luke Yelavich (themuso) |
summary: |
- Choppy sound. Videos play double speed + [MacBookPro7,1] Choppy sound. Videos play double speed |
summary: |
- [MacBookPro7,1] Choppy sound. Videos play double speed + [Several MacBooks (with PCI SSID 10de:cb89)] Choppy sound. Videos play + double speed |
description: | updated |
Killing pulseaudio stops the choppyness.