use hdajacksensetest to verify node 0x15 is headphone and node 0x1b is line out when you plug and unplug the headphone and line out
-- 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/1425221 Title: [OptiPlex 9020, Realtek ALC280, Green Line Out, Rear] tinny sound Status in alsa-driver package in Ubuntu: Confirmed Bug description: Sound equalization is normal when using jack in front of computer, but is "tinny" (i.e., low/nonexistent bass and midtones) when using rear output jack with simple two channel headphones. Jack sense is working correctly because the internal speaker cuts out when a cable is plugged into the rear jack (or front jack, for that matter). Note Dell's website says this computer has a Realtek ALC3220, as opposed to the ALC280 which is detected by linux. This is a clean install of 14.04, so I unfortunately I can't boot into Windows to observe its behavior. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-45.74-generic 3.13.11-ckt13 Uname: Linux 3.13.0-45-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 CurrentDesktop: Unity Date: Tue Feb 24 12:31:49 2015 InstallationDate: Installed on 2015-01-30 (25 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) 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: Green Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: High background noise, or volume is too low Title: [OptiPlex 9020, Realtek ALC280, Green Line Out, Rear] Background noise or low volume UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/20/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 06X1TJ dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd11/20/2014:svnDellInc.:pnOptiPlex9020:pvr01:rvnDellInc.:rn06X1TJ:rvrA00:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 9020 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1425221/+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