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Message #104000
[Bug 1315770] Re: [Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left] Strong background noise
Can someone please validate that 3.16 does fix it though? If not, there
are some other workarounds mentioned:
hda-verb /dev/snd/hwC1D0 0x0c SET_AMP_GAIN_MUTE 0x5180
hda-verb /dev/snd/hwC1D0 0x0c SET_AMP_GAIN_MUTE 0x6180
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https://bugs.launchpad.net/bugs/1315770
Title:
[Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left]
Strong background noise
Status in Dell Sputnik:
Fix Released
Status in linux package in Ubuntu:
Confirmed
Status in Fedora:
New
Bug description:
When I connect the headphones, there is a strong hissing in both left
and right side. It does not amplify or reduce along with the master
volume. Instead, if I completely mute the master volume, the hissing
disappears. It comes back as soon as I unmute the master volume.
The internal speakers of the laptop are not affected: when headphones
are not connected, there is no background hissing noise.
Standard four questions:
1) Ubuntu release: 14.04 LTS
2) Package affected: kernel? (linux-image-3.13.0-24-generic) or maybe alsa-driver?
3) Unless I play music, I expect no to hear anything in the headphones
4) I get a background hissing noise in the headphones
Thanks!
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: alsa-base 1.0.25+dfsg-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: sun 1875 F.... pulseaudio
/dev/snd/controlC1: sun 1875 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun May 4 02:46:01 2014
InstallationDate: Installed on 2014-05-02 (1 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Audio interne - HDA Intel PCH
Symptom_Jack: Black Headphone Out, Left
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: High background noise, or volume is too low
Title: [Dell Precision M3800, Realtek ALC668, Black Headphone Out, Left] Background noise or low volume
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/06/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A03
dmi.board.name: Dell Precision M3800
dmi.board.vendor: Dell Inc.
dmi.board.version: A03
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: Not Specified
dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/06/2014:svnDellInc.:pnDellPrecisionM3800:pvrA03:rvnDellInc.:rnDellPrecisionM3800:rvrA03:cvnDellInc.:ct8:cvrNotSpecified:
dmi.product.name: Dell Precision M3800
dmi.product.version: A03
dmi.sys.vendor: Dell Inc.
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