[USB-Audio - Razer Megalodon, playback] Underruns, dropouts or crackling sound

[Paul Drain]

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

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[John McKackingder (reportados123)]

I also have this problem, I have Arch Linux installed and my headset would crackle no matter what configuration I set, I tried all the possible workarounds/fixes and still nothing. I tried ALSA and PulseAudio but I always get crackling. On a rare occasion, I would get perfect sound with no crackling, and then after you reboot, it's gone back to crackling. Also, every time I listen to any kind of music/video/sound, after a period of time, the Razer Megalodon would just freeze and I would have to replug it back in to fix it (which crackling still occurs). I tried many different distros on a livecd and all of them would cause crackling. This is a problem with ALSA, and I'd appreciate if anyone could fix this problem.

[Raymond (superquad-vortex2)]

seem your USB audio did not have any volume.controls

post the output of alsa-info.sh

lsusb -vvvv

and pulseaudio verbose log

5646.825928] cannot submit datapipe for urb 0, error -28: not enough bandwidth
[ 5646.826103] cannot submit datapipe for urb 0, error -28: not enough bandwidth
[ 5646.826285] cannot submit datapipe for urb 0, error -28: not enough bandwidth
[ 5659.702970] retire_capture_urb: 140 callbacks suppressed
[ 5775.552402] usb 2-1.4: USB disconnect, device number 4
[ 5779.333175] usb 3-2: new full-speed USB device number 2 using xhci_hcd
[ 5779.392795] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11.
[ 5779.392814] usb 3-2: Not enough bandwidth for altsetting 1
[ 5779.393001] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11.
[ 5779.393013] usb 3-2: Not enough bandwidth for altsetting 2
[ 5779.499483] xhci_hcd 0000:05:00.0: ERROR: unexpected command completion code 0x11.

[Raymond (superquad-vortex2)]

Default sample spec: float32le 8ch 48000Hz
Default channel map: front-left,front-left-of-center,front-center,front-right,front-right-of-center,rear-center,aux0,aux1
Default sink name: auto_null
Default source name: alsa_input.usb-Razer_Razer_Megalodon-00-Megalodon.analog-mono

do your USB audio support 7.1 if you specify default sample 8ch ?

[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.]