Hey, I´m an suse user with exactly the Same Problem. I got completely the same issue as reportados123, but i found a (not complete) "fix"!
I searched about this thing for Weeks and get stuck at the snd_usb_audio kernel module. I noticed the 'nrpacks' parameter of this module and start to play with it... and finally.... NO CRACKS. The Sound was fixed. But the Microphone get sometimes really worse like squeaking sounds or high Pitch. But in most use cases it works just perfectly. Here is what to do (I use opensuse 12.3, so i don’t know if it works for you..) 1. Stop any Application that uses ALSA or Pulse. 2. Open a Root shell (su, or sudo su) 3. type "killall pulseaudio" in your Terminal Emulator so long if it stops for auto spawn (yes, i know dirty but i´m lazy) 4. unload 'snd_usb_audio' with "rmmod snd_usb_audio". 5. Create an configuration file for 'snd_usb_audio' in /etc/modprobe.d/ echo "options snd-usb-audio nrpacks=16" > /etc/modprobe.d/audio- force.conf Note: For me works '16' as the Best Value. . 6. Now load 'snd_usb_audio' again: "modprobe snd_usb_audio" 7. Start pulseaudio again or just relog/boot. I hope it helps anyone! p.s: sry my english sucks :p (from germany) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1184025 Title: [USB-Audio - Razer Megalodon, playback] Underruns, dropouts or crackling sound Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: Happens in all apps. Only when audio is playing. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: pulseaudio 1:3.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.8.0-21.32-generic 3.8.8 Uname: Linux 3.8.0-21-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.9.2-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: james 2384 F.... pulseaudio /dev/snd/controlC1: james 2384 F.... pulseaudio /dev/snd/controlC0: james 2384 F.... pulseaudio Date: Fri May 24 15:32:18 2013 InstallationDate: Installed on 2012-08-03 (294 days ago) InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Megalodon successful Symptom_Card: Razer Megalodon - Razer Megalodon Symptom_PulsePlaybackTest: PulseAudio playback test failed Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [USB-Audio - Razer Megalodon, playback] Underruns, dropouts or crackling sound UpgradeStatus: Upgraded to raring on 2013-05-23 (1 days ago) dmi.bios.date: 11/22/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.70 dmi.board.name: X79 Extreme4-M dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.70:bd11/22/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX79Extreme4-M:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1184025/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
