Thank you for reporting this bug to Ubuntu. Ubuntu 15.10 (wily) reached end-of-life on July 28, 2016.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: alsa-driver (Ubuntu) Status: New => Won't Fix -- 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/1569760 Title: bacground noise from headphones Status in alsa-driver package in Ubuntu: Won't Fix Bug description: I have an annoying quiet noise in my headphones. It is low, so one hears it only when there is no sound. The noise is significantly decreased after applying with the HDA Analyzer the following patch: iff for codec 0/0 (0x10ec0280): --- +++ @@ -92,17 +92,17 @@ Control: name="Beep Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=1, idx=4, ofs=0 Amp-In caps: ofs=0x17, nsteps=0x1f, stepsize=0x05, mute=1 Amp-In vals: [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] [0x80 0x80] Connection: 5 0x18 0x19 0x1a 0x1b 0x1d 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] + Amp-In vals: [0x00 0x00] [0x80 0x80] 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: [0x80 0x80] [0x80 0x80] Connection: 2 0x03 0x0b Node 0x0e [Vendor Defined Widget] wcaps 0xf00000: Mon I still can hear very low noise. In order to get rid of this one, I have to apply: Diff for codec 0/0 (0x10ec0280): --- +++ @@ -147,17 +147,17 @@ Unsolicited: tag=0x00, enabled=0 Power: setting=D3, actual=D3 Connection: 2 0x0c 0x0d* Node 0x15 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out Control: name="Headphone Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=1, idx=0, ofs=0 Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 - Amp-Out vals: [0x00 0x00] + Amp-Out vals: [0x80 0x80] Pincap 0x0001001c: OUT HP EAPD Detect EAPD 0x2: EAPD Pin Default 0x0421101f: [Jack] HP Out at Ext Right Conn = 1/8, Color = Black DefAssociation = 0x1, Sequence = 0xf Pin-ctls: 0xc0: OUT HP Unsolicited: tag=0x01, enabled=1 Power: setting=D0, actual=D But then I don't have sound at all. I presume, with the last patch I basically switch of the headphones output completely. I think, it would be a good idea to add the 'HP ZBook' model to the SND-HDA-INTEL driver so it could automatically apply the above settings. ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5 Uname: Linux 4.2.0-35-generic x86_64 NonfreeKernelModules: openafs fglrx ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: afiergol 2766 F.... pulseaudio afiergol 3717 F.... alsamixer /dev/snd/controlC1: afiergol 2766 F.... pulseaudio CurrentDesktop: Unity Date: Wed Apr 13 10:24:44 2016 InstallationDate: Installed on 2015-04-02 (376 days ago) InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) PackageArchitecture: all SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/26/2016 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: M70 Ver. 01.14 dmi.board.name: 2253 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 03.10 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrM70Ver.01.14:bd01/26/2016:svnHewlett-Packard:pnHPZBook15G2:pvrA3008CD10003:rvnHewlett-Packard:rn2253:rvrKBCVersion03.10:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ZBook 15 G2 dmi.product.version: A3008CD10003 dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1569760/+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
