Kevin, please note the root cause is the communication between amixer and pulseaudio, see comment #29
command like "amixer -D pulse ..." could look like to "solve" this issue because amixer builds the mixer control directly from the "virtul" device Pulseaudio instead of the "real" device, say your audio card. To bind the hotkey together with a new command like "amixer -D ..." is only a workaround. PS 1. If you are interested in this, you could try "alsamixer" and "alsamixer -D pulse" and see what's difference between the device name on the alsamixer panel. 2. another interesting experiment: you could try to un-mute all of the channels besides Master (e.g. Speaker, Headphone, PCM ...etc. ), and you should see the sound comes back. -- 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/878986 Title: amixer -q sset Master toggle does mute, but does not unmute! Status in “pulseaudio” package in Ubuntu: Triaged Bug description: I am using keyboard shortcuts to increase/decrease/mute volume by executing: amixer -q sset Master 5+ amixer -q sset Master 5- amixer -q sset Master toggle From when I have updated to Ubuntu 11.10, 'amixer sset Master toggle' does mute the volume, but when i execute it again it does not unmute it. In command line, it looks fine: :~$ amixer sset Master toggle Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 31 Mono: Playback 16 [52%] [-22.50dB] [off] :~$ amixer sset Master toggle Simple mixer control 'Master',0 Capabilities: pvolume pvolume-joined pswitch pswitch-joined penum Playback channels: Mono Limits: Playback 0 - 31 Mono: Playback 16 [52%] [-22.50dB] [on] but it remains muted. I use pavucontrol to unmute sound from the GUI. Info: :~$ apt-cache policy alsa-utils alsa-utils: Installed: 1.0.24.2-0ubuntu8 Candidate: 1.0.24.2-0ubuntu8 Version table: *** 1.0.24.2-0ubuntu8 0 500 http://rs.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages 100 /var/lib/dpkg/status :~$ lsb_release -rd Description: Ubuntu 11.10 Release: 11.10 ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: linux-image-3.0.0-12-generic 3.0.0-12.20 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Uname: Linux 3.0.0-12-generic x86_64 NonfreeKernelModules: fglrx AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: instructor 19328 F.... pulseaudio /dev/snd/pcmC0D0p: instructor 19328 F...m pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfe9f8000 irq 43' Mixer name : 'Realtek ALC883' Components : 'HDA:10ec0883,1043829f,00100002' Controls : 37 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfeafc000 irq 44' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100000' Controls : 4 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] Date: Thu Oct 20 19:31:13 2011 HibernationDevice: RESUME=UUID=cf6e9ff7-a63e-457c-aba4-706765c58de1 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: System manufacturer P5K ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=5611c46a-40ee-4ded-bbda-b8365335826b ro acpi_enforce_resources=lax quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.0.0-12-generic N/A linux-backports-modules-3.0.0-12-generic N/A linux-firmware 1.60 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago) dmi.bios.date: 07/03/2007 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0603 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5K dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0603:bd07/03/2007:svnSystemmanufacturer:pnP5K:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: P5K dmi.product.version: System Version dmi.sys.vendor: System manufacturer --- AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 1.23-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: instructor 19328 F.... pulseaudio /dev/snd/pcmC0D0p: instructor 19328 F...m pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfe9f8000 irq 43' Mixer name : 'Realtek ALC883' Components : 'HDA:10ec0883,1043829f,00100002' Controls : 37 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'HDMI'/'HDA ATI HDMI at 0xfeafc000 irq 44' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100000' Controls : 4 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined penum Playback channels: Mono Mono: Playback [on] DistroRelease: Ubuntu 11.10 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) NonfreeKernelModules: fglrx Package: alsa-base 1.0.24+dfsg-0ubuntu2 PackageArchitecture: all ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Tags: oneiric Uname: Linux 3.0.0-12-generic x86_64 UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare dmi.bios.date: 07/03/2007 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0603 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P5K dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0603:bd07/03/2007:svnSystemmanufacturer:pnP5K:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP5K:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: P5K dmi.product.version: System Version dmi.sys.vendor: System manufacturer --- ApportVersion: 1.23-0ubuntu3 Architecture: amd64 DistroRelease: Ubuntu 11.10 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) NonfreeKernelModules: fglrx Package: alsa-utils 1.0.24.2-0ubuntu8 PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4 Tags: oneiric Uname: Linux 3.0.0-12-generic x86_64 UpgradeStatus: Upgraded to oneiric on 2011-10-16 (3 days ago) UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/878986/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
