Opening alsamixer in a terminal and disabling "Auto-Mute" seems to solve the problem.
-- 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/1068637 Title: Sound (from the speakers) stops working after logging in. Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: During logging in, there is the distinct ubuntu login sound. Loud and clear, from the laptop speakers. After logging in, all sounds stop. But if i were to plugin a headset, it's working fine. A reboot sometimes fixes it. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: pulseaudio 1:2.1-0ubuntu4 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.6.1-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: gaddy 3112 F.... pulseaudio /dev/snd/controlC0: gaddy 3112 F.... pulseaudio /dev/snd/pcmC0D0p: gaddy 3112 F...m pulseaudio CurrentDmesg: Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied Date: Fri Oct 19 19:02:09 2012 InstallationMedia: This SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/26/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0J1VR3 dmi.board.vendor: Dell Inc. dmi.board.version: A08 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A08 dmi.modalias: dmi:bvnDellInc.:bvrA08:bd07/26/2011:svnDellInc.:pnXPSL501X:pvrA08:rvnDellInc.:rn0J1VR3:rvrA08:cvnDellInc.:ct8:cvrA08: dmi.product.name: XPS L501X dmi.product.version: A08 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1068637/+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