the pcm playback volume control at audio mixer 0x16 has different dB range and is common to headphone and line out, this mean that virtual master should not use is as slave
use alsamixer -c0 to monitor the change in volume controls when you change the slider in sound preference Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 27 Mono: Playback 27 [100%] [6.75dB] [on] Simple mixer control 'Headphone',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 27 Mono: Front Left: Playback 27 [100%] [0.00dB] [on] Front Right: Playback 27 [100%] [0.00dB] [on] Simple mixer control 'PCM',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 31 Mono: Front Left: Playback 24 [77%] [1.75dB] [on] Front Right: Playback 24 [77%] [1.75dB] [on] Simple mixer control 'Front',0 Capabilities: pvolume pswitch penum Playback channels: Front Left - Front Right Limits: Playback 0 - 27 Mono: Front Left: Playback 27 [100%] [0.00dB] [on] Front Right: Playback 27 [100%] [0.00dB] [on] -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1210129 Title: Pulseaudio does not recognize sound levels correctly. Status in “pulseaudio” package in Ubuntu: New Bug description: When I am setting volume to 75-100% sounds is amplified and quality is very bad. Setting for "Unampified" in sound settings (which is placed around 50% of the bar) makes sound is almost unhearable. Sound is good and loud around 60% of volume. This is really annoying because setting volume from keyboard or sound indicator is useless -> volume up makes terrible sound, volume down only 10% to 50%(unamplified) makes there is almost no sound. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: pulseaudio 1:3.0-0ubuntu6 ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4 Uname: Linux 3.8.0-27-generic i686 ApportVersion: 2.9.2-0ubuntu8.1 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ciastek 2109 F.... pulseaudio /dev/snd/pcmC0D0p: ciastek 2109 F...m pulseaudio Date: Thu Aug 8 15:18:41 2013 InstallationDate: Installed on 2013-06-12 (56 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424) MarkForUpload: True ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=pl_PL.UTF-8 SHELL=/bin/bash PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/11/2008 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: ASUS P5N73-AM ACPI BIOS Revision 0201 dmi.board.name: P5N73-AM dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: 2.XX dmi.chassis.asset.tag: 123456789000 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSP5N73-AMACPIBIOSRevision0201:bd06/11/2008:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5N73-AM:rvr2.XX:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1210129/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
