I confirm, the cable has 2 ends, labeled HD AUDIO and AC'97, I tried both and without, same problem.
I tried removing the SPEAKER cable, it's a little cable for the beep sound of the motherboard, the end of this one is a little cylinder producing the beep, same problem. In Windows, the driver I'm using, which are working are : Sound, video and game controllers - High Definition Audio Device - Realtek High Definition Audio But in Linux it seems it's using HDA Intel, maybe it's the wrong driver? I can also add that in alsamixer, if I try to put at 0 : Surround, Center, LFE and Side, as soon as the annoying noise comes in, it reset everything to 100. Here's more information : dmesg | grep -i sound [ 4.669488] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input6 [ 4.669535] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7 [ 4.669574] input: HDA Intel PCH Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input8 [ 4.669632] input: HDA Intel PCH Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9 [ 4.669677] input: HDA Intel PCH Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10 [ 4.669713] input: HDA Intel PCH Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11 [ 4.669742] input: HDA Intel PCH Line Out Side as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12 [ 4.669787] input: HDA Intel PCH Line Out CLFE as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13 [ 4.669817] input: HDA Intel PCH Line Out Surround as /devices/pci0000:00/0000:00:1b.0/sound/card0/input14 [ 4.669845] input: HDA Intel PCH Line Out Front as /devices/pci0000:00/0000:00:1b.0/sound/card0/input15 lsmod | grep -i snd snd_hda_codec_hdmi 32007 1 snd_hda_codec_realtek 77876 1 snd_hda_intel 33491 3 snd_hda_codec 134212 3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel snd_hwdep 13602 1 snd_hda_codec snd_pcm 96580 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec snd_seq_midi 13324 0 snd_rawmidi 30512 1 snd_seq_midi snd_seq_midi_event 14899 1 snd_seq_midi snd_seq 61521 2 snd_seq_midi,snd_seq_midi_event snd_timer 29425 2 snd_pcm,snd_seq snd_seq_device 14497 3 snd_seq_midi,snd_rawmidi,snd_seq snd 78734 16 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device soundcore 15047 1 snd snd_page_alloc 18484 2 snd_hda_intel,snd_pcm -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1067434 Title: Sound output device keeps changing when using headphones Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: Recently upgraded to 12.10. Having issues with sound when using headphones plugged into the front ports. Something that doesn't happen when booting to windows - so fairly confident it's an Ubuntu issue. When listening to any sound, music, video etc the sound levels jump up and down and click. If I open "sound" from the settings menu when playing videos or music and viewing the "output" tab I can see "headphone - built-in audio disappear and reappear (very quickly) so I'm guessing the system is jumping back to the "analogue output" and back again which is why the sound volume changes and clicks. Worth noting I never used my headphones when 12.04 was installed so not sure if it's this OS or Ubuntu hates my hardware generally. Booted from live cd (usb) to 12.04 and there wasnt any issue. Anyone seen this before? any advice? Sound is built in to motherboard. I have the Gigabyte GA-X58A-UD5. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: gnome-control-center 1:3.4.2-0ubuntu19 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.6.1-0ubuntu3 Architecture: amd64 Date: Tue Oct 16 18:07:44 2012 EcryptfsInUse: Yes ExecutablePath: /usr/bin/gnome-control-center InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: Upgraded to quantal on 2012-09-29 (17 days ago) usr_lib_gnome-control-center: activity-log-manager-control-center 0.9.4-0ubuntu4 deja-dup 24.0-0ubuntu1 gnome-control-center-signon 0.0.18-0ubuntu1 indicator-datetime 12.10.2-0ubuntu3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1067434/+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

