low volume is expected when you plug headphone into line out Jack because HP AMP is not enabled in line out node 0x14
you need hint add_jack_modes=1 to create line out Jack mode control which allow you to change the line out Jack to support headphone https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/Documentation/sound/alsa/HD-Audio.txt - add_jack_modes (bool): add "xxx Jack Mode" enum controls to each I/O jack for allowing to change the headphone amp and mic bias VREF capabilities : ode 0x14 [Pin Complex] wcaps 0x40058d: Stereo Amp-Out Control: name="Front Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Line Out Front Jack", index=0, device=0 Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x0001003e: IN OUT HP EAPD Detect Trigger EAPD 0x2: EAPD Pin Default 0x01015010: [Jack] Line Out at Ext Rear Conn = 1/8, Color = Red DefAssociation = 0x1, Sequence = 0x0 Pin-ctls: 0x40: OUT Unsolicited: tag=05, enabled=1 Power states: D0 D1 D2 D3 EPSS Power: setting=D0, actual=D0 Connection: 1 0x0c Node 0x1b [Pin Complex] wcaps 0x40058f: Stereo Amp-In Amp-Out Control: name="Headphone Playback Switch", index=0, device=0 ControlAmp: chs=3, dir=Out, idx=0, ofs=0 Control: name="Front Headphone Jack", index=0, device=0 Amp-In caps: ofs=0x00, nsteps=0x03, stepsize=0x27, mute=0 Amp-In vals: [0x00 0x00] Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1 Amp-Out vals: [0x00 0x00] Pincap 0x0001373e: IN OUT HP EAPD Detect Trigger Vref caps: HIZ 50 GRD 80 100 EAPD 0x2: EAPD Pin Default 0x02214020: [Jack] HP Out at Ext Front Conn = 1/8, Color = Green DefAssociation = 0x2, Sequence = 0x0 Pin-ctls: 0xc0: OUT HP VREF_HIZ Unsolicited: tag=01, enabled=1 Power states: D0 D1 D2 D3 EPSS Power: setting=D0, actual=D0 Connection: 5 0x0c 0x0d 0x0e 0x0f 0x26* -- 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/1357724 Title: Extremely low volume from HP, also skipping and distorted voice Status in “alsa-driver” package in Ubuntu: New Bug description: I plugged into my headphone into rear red jack and I got extremely low volume despite I set max volume with slider, so is front Headphone jack. I dumpped the sound codec and found they are all EAPD node. I also get some skipping and distorted issue. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4 Uname: Linux 3.13.0-34-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 CurrentDesktop: XFCE Date: Sat Aug 16 21:57:33 2014 EcryptfsInUse: Yes InstallationDate: Installed on 2014-08-15 (1 days ago) InstallationMedia: Xubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140723) 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: Red Line Out, Rear Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [MS-7918, Realtek ALC1150, Red Line Out, Rear] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/24/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V2.3 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: Z97 GAMING 3 (MS-7918) dmi.board.vendor: MSI dmi.board.version: 1.0 dmi.chassis.asset.tag: To be filled by O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MSI dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV2.3:bd07/24/2014:svnMSI:pnMS-7918:pvr1.0:rvnMSI:rnZ97GAMING3(MS-7918):rvr1.0:cvnMSI:ct3:cvr1.0: dmi.product.name: MS-7918 dmi.product.version: 1.0 dmi.sys.vendor: MSI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1357724/+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
