the point is pulseaudio does not use the Jack state of rear line out
Jack to select active port
analog-output: Analog Output (priority 9900, latency offset 0 usec, available:
unknown)
properties:
analog-output-headphones: Headphones (priority 9000, latency
offset 0 usec, available: no)
properties:
device.icon_name = "audio-headphones"
iec958-stereo-output: Digital Output (S/PDIF) (priority 0,
latency offset 0 usec, available: unknown)
properties:
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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
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