[X756UWK, Conexant CX20751/2, Black Headphone Out, Left] I can play sound without headphone but when i connect headphone sound can not play at all.

[masoud]

i can play sound without headphone but when i connect headphone sound can not play at all.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: masoud 3192 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Jan 28 14:31:19 2019
InstallationDate: Installed on 2019-01-15 (13 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_DevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: gdm 2111 F.... pulseaudio
                      masoud 3192 F.... pulseaudio
Symptom_Jack: Black Headphone Out, Left
Symptom_Type: No sound at all
Title: [X756UWK, Conexant CX20751/2, Black Headphone Out, Left] No sound at all
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/08/2017
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X756UWK.307
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X756UWK
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX756UWK.307:bd03/08/2017:svnASUSTeKCOMPUTERINC.:pnX756UWK:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX756UWK:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: X
dmi.product.name: X756UWK
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

[Daniel van Vugt (vanvugt)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1603696, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.