Try hda-analyzer to mute the signal from node 0x0b in those amp in at node 0x0c and 0x0d
Node 0x0c [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x02 0x0b Node 0x0d [Audio Mixer] wcaps 0x20010b: Stereo Amp-In Amp-In caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-In vals: [0x00 0x00] [0x00 0x00] Connection: 2 0x03 0x0b -- 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/1534434 Title: [20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns, dropouts or crackling sound Status in alsa-driver package in Ubuntu: Confirmed Bug description: Hello, i'm currently having the same issue on a Thinkpad T450, with Ubuntu 15.10 and 15.04 I connect my headphones to the headphone jack, when i connect the headphone jack in the headphone port, i get the same cracking, popping sound as startup and shutdown/reboot. So, when i boot, i get a cracking, popping sound that overpowers the headphones, it still occurs when i shutdown the laptop or reboot. The output of alsa-info.sh gives me a different codec instead of the proposed fix information 0x10ec0292 0x17aa5036 0 i have 0x10ec0292 0x17aa5034 0 I tried the fix with both 0x17aa5036 and 0x17aa5034, on Ubuntu 15.10 and 15.04 without luck, the symptom stays, the cracking sound appears at startup and shutdown. I tried fedora 23 and i still have the issue. Probably caused by the same issue, i get a static noise in the both headphones if i mute it goes away Thanks for your help. Almost similar issue as specified here https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1502155 Detailed info : Description: Ubuntu 15.10 Release: 15.10 ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.2.0-23.28-generic 4.2.6 Uname: Linux 4.2.0-23-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: madmantm 1370 F.... pulseaudio madmantm 1916 F.... alsamixer /dev/snd/controlC0: madmantm 1370 F.... pulseaudio CurrentDesktop: GNOME Date: Thu Jan 14 22:18:30 2016 InstallationDate: Installed on 2016-01-15 (0 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Black Headphone Out, Right Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [20BVCTO1WW, Realtek ALC3232, Black Headphone Out, Right] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/23/2015 dmi.bios.vendor: LENOVO dmi.bios.version: JBET55WW (1.20 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BVCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40705 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrJBET55WW(1.20):bd12/23/2015:svnLENOVO:pn20BVCTO1WW:pvrThinkPadT450:rvnLENOVO:rn20BVCTO1WW:rvrSDK0J40705WIN:cvnLENOVO:ct10:cvrNone: dmi.product.name: 20BVCTO1WW dmi.product.version: ThinkPad T450 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1534434/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
