Public bug reported:
Hi,
I have a O2+ODAC USB DAC unit.
14.04/15.10 output volume level is identical to Windows; in my case this
means that low gain and volume knob @ 12:00 is as loud as my ears can
handle.
Installed 16.04 today, volume level is considerably lower vs Windows
now. I can now play at high gain and max volume and volume level is
just bearable. I would run into limits of my headphones or hit the pain
threshold if I tried this in Windows.
I've tried adjusting the volume levels in the volume control for both
the app and the system level, both are at 99% and volume level is low.
Allowing above 100% results in destortion but not reaching previously
attainable volume levels.
Im a techy user and capable of advanced troubleshooting if required.
Alan
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
Uname: Linux 4.4.0-21-generic x86_64
ApportVersion: 2.20.1-0ubuntu2
Architecture: amd64
CurrentDesktop: Unity
Date: Sun May 1 23:29:03 2016
InstallationDate: Installed on 2016-05-01 (0 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: LifeCam Studio - Microsoft® LifeCam Studio(TM)
Symptom_Type: Volume slider, or mixer problems
Title: [USB-Audio - ODAC-revB, playback] volume slider problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/19/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: N10ET36W (1.15 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20CMCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40709 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN10ET36W(1.15):bd06/19/2015:svnLENOVO:pn20CMCTO1WW:pvrThinkPadX250:rvnLENOVO:rn20CMCTO1WW:rvrSDK0J40709WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20CMCTO1WW
dmi.product.version: ThinkPad X250
dmi.sys.vendor: LENOVO
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1577249
Title:
[USB-Audio - ODAC-revB, playback] Much lower volume since 16.04
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