I've been experiencing this for a few weeks now. It got noticeably worse when I upgraded to 13.10 ... I can sit here and watch on the Pavucontrol and watch both the output and input jump back and forth from (analog > headphones) or (Line-in > rear-mic > front-mic) Funnily enough I no longer have a front mic or front headset because it died long ago and I've been too consumed with other things to replace it.
I've downgraded to 13.04 again, in the attempt to once again fix the frustrating occurrence that it goes out in the middle of Skype calls or music or an important appointment call, I broke my entire set up and had to do a fresh install, so not sure if I'm going to go up to Saucy just yet. I can get it to the point that it no longer hiccups and spits sound at me all the time, (just sometimes), through searching out fixes (still fairly fresh to Linux even though have been playing with it for a couple years) I'm curious though as to why its gotten a mind of its own? I too have a Realtek ALC888 with an Nvidia GeForce 610 GT that has HDMI audio controller though I don't use it, Alsa and PulseAudio seem to think I want to even though it's not hooked up. Pulse audio keeps turning it on even though I turn it off in the profile. -- 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/1248405 Title: [DL-H61MXEL, Realtek ALC888, Green Line Out, Rear] Underruns, dropouts or crackling sound Status in “pulseaudio” package in Ubuntu: New Bug description: When the output volume is set near 100% and a sound is playing, volume level alternates too fast. Sometimes it goes to mute. I watched System Settings > Sound and found that sound output device is alternating between 'Analog Output -Built-in Audio' and 'Headphones - Built-in Audio'. The switching is too frequent and introduces glitches in output. By default output device is 'Analog Output - Built-in Audio'. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: pulseaudio 1:3.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8 Uname: Linux 3.8.0-31-generic x86_64 ApportVersion: 2.9.2-0ubuntu8.5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: gokul 2613 F.... pulseaudio Date: Wed Nov 6 10:36:23 2013 InstallationDate: Installed on 2013-05-22 (167 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MarkForUpload: True SourcePackage: pulseaudio Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Green Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test failed Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [DL-H61MXEL, Realtek ALC888, Green Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/16/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: A92DLP11 dmi.board.name: DL-H61MXEL dmi.board.vendor: DIGILITE dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA92DLP11:bd12/16/2011:svnDIGILITE:pnDL-H61MXEL:pvrTobefilledbyO.E.M.:rvnDIGILITE:rnDL-H61MXEL:rvr: dmi.product.name: DL-H61MXEL dmi.product.version: To be filled by O.E.M. dmi.sys.vendor: DIGILITE To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1248405/+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

