Public bug reported:
Intermittantly, the Sound Configuration settings finds the headset with
input and output, but 9/10 times it is used as "1 Input / Analogue Mono
Input".
dmesg, when the card is plugged into a USB 3.0 port says:
[ 5860.928881] usb 3-2: Not enough bandwidth for altsetting 1
[ 5860.928886] 2:2:1: usb_set_interface failed
[ 5860.929552] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code
0x11.
[ 5860.929563] usb 3-2: Not enough bandwidth for altsetting 1
[ 5860.929567] 2:2:1: usb_set_interface failed
[ 5860.930484] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code
0x11.
[ 5860.930496] usb 3-2: Not enough bandwidth for altsetting 1
[ 5860.930501] 2:2:1: usb_set_interface failed
[ 5860.931486] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code
0x11.
[ 5860.931498] usb 3-2: Not enough bandwidth for altsetting 1
[ 5860.931503] 2:2:1: usb_set_interface failed
[ 5960.465649] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code
0x11.
[ 5960.465671] usb 3-2: Not enough bandwidth for altsetting 2
[ 5960.465677] 2:2:2: usb_set_interface failed
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: paul 3725 F.... pulseaudio
/dev/snd/pcmC1D0c: paul 3725 F...m pulseaudio
/dev/snd/controlC0: paul 3725 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xd1b00000 irq 52'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0269,10250504,00100100
HDA:80862805,80860101,00100000'
Controls : 26
Simple ctrls : 12
Card1.Amixer.info:
Card hw:1 'Megalodon'/'Razer Razer Megalodon at usb-0000:05:00.0-2, full speed'
Mixer name : 'USB Mixer'
Components : 'USB1532:000e'
Controls : 1
Simple ctrls : 1
Card1.Amixer.values:
Simple mixer control 'PCM',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Fri May 18 01:27:22 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120327.1)
PackageArchitecture: all
ProcEnviron:
LANGUAGE=en_AU:en
TERM=xterm
PATH=(custom, no user)
LANG=en_AU.UTF-8
SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Megalodon failed
Symptom_AlsaPlaybackTestStderr: U n a b l e t o s e t h w p a r a m s
f o r p l a y b a c k : I n p u t / o u t p u t e r r o r
Symptom_Card: Razer Megalodon - Razer Megalodon
Symptom_Type: Underruns, dropouts, or "crackling" sound
Title: [USB-Audio - Razer Megalodon, playback] Underruns, dropouts or crackling
sound
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 04/25/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.10
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE50_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.10
dmi.modalias:
dmi:bvnAcer:bvrV1.10:bd04/25/2011:svnAcer:pnAspire5750G:pvrV1.10:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.10:
dmi.product.name: Aspire 5750G
dmi.product.version: V1.10
dmi.sys.vendor: Acer
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug precise
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https://bugs.launchpad.net/bugs/1000811
Title:
[USB-Audio - Razer Megalodon, playback] Underruns, dropouts or
crackling sound
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