I still have this problem. See attachment.
** Attachment added: "Alsa-info from http://www.alsa-project.org/alsa-info.sh"; https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1315770/+attachment/4310471/+files/alsa-info.txt -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1315770 Title: [Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left] Strong background noise Status in Dell Sputnik: New Status in alsa-driver package in Ubuntu: Confirmed Status in Fedora: New Bug description: When I connect the headphones, there is a strong hissing in both left and right side. It does not amplify or reduce along with the master volume. Instead, if I completely mute the master volume, the hissing disappears. It comes back as soon as I unmute the master volume. The internal speakers of the laptop are not affected: when headphones are not connected, there is no background hissing noise. Standard four questions: 1) Ubuntu release: 14.04 LTS 2) Package affected: kernel? (linux-image-3.13.0-24-generic) or maybe alsa-driver? 3) Unless I play music, I expect no to hear anything in the headphones 4) I get a background hissing noise in the headphones Thanks! ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sun 1875 F.... pulseaudio /dev/snd/controlC1: sun 1875 F.... pulseaudio CurrentDesktop: Unity Date: Sun May 4 02:46:01 2014 InstallationDate: Installed on 2014-05-02 (1 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Audio interne - HDA Intel PCH Symptom_Jack: Black Headphone Out, Left Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: High background noise, or volume is too low Title: [Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left] Background noise or low volume UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/06/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: Dell Precision M3800 dmi.board.vendor: Dell Inc. dmi.board.version: A03 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/06/2014:svnDellInc.:pnDellPrecisionM3800:pvrA03:rvnDellInc.:rnDellPrecisionM3800:rvrA03:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Dell Precision M3800 dmi.product.version: A03 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1315770/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
