Public bug reported:
There is a background hissing/squeaking noise in my headphones every time I
resume suspend.
Speakers and HDMI audio are not affected.
I've tried many solutions to fix it (alsa force-reload etc.), but none of them
worked well.
More detailes you can find here:
http://askubuntu.com/questions/884051/constant-hissing-sound-after-suspend-asus-zenbook-ux501-vw
Standard four questions:
1) Ubuntu 16.04.1 LTS
2) Kernel 4.8.17-040817-generic (also tried 4.4.0 and 4.3.5)
3) When I resume suspend I hear no noise unless I play something
4) Right after suspend resume there is a background noise
Thanks!
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
Uname: Linux 4.8.17-040817-generic x86_64
NonfreeKernelModules: nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC0D0c: firesword 3563 F...m pulseaudio
/dev/snd/pcmC0D0p: firesword 3563 F...m pulseaudio
/dev/snd/controlC0: firesword 3563 F.... pulseaudio
CurrentDesktop: Unity
Date: Fri Feb 17 23:54:52 2017
InstallationDate: Installed on 2017-02-17 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
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: Black Headphone Out, Right
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: High background noise, or volume is too low
Title: [N501VW, Realtek ALC668, Black Headphone Out, Right] Background noise or
low volume
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/28/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: N501VW.304
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: N501VW
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.:bvrN501VW.304:bd11/28/2016:svnASUSTeKCOMPUTERINC.:pnN501VW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnN501VW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: N501VW
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
modified.conffile..etc.modprobe.d.alsa-base.conf: [modified]
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2017-02-17T21:26:16.180413
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1665785
Title:
[N501VW, Realtek ALC668, Black Headphone Out, Right] Background noise
or low volume
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