Same problem for me: after upgrading to 17.10, no more sound devices shown by pulse. Lenovo Ideapad Z510 with Intel hda soundchip. Alsainfo attached.
** Attachment added: "alsa-info.txt" https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1728587/+attachment/5000294/+files/alsa-info.txt -- 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/1728587 Title: No audio device after upgrade to Kubuntu 17.10 Status in pulseaudio package in Ubuntu: New Bug description: After upgrading Kubuntu 17.04 to 17.10, KDE lost the audio device (Realtek sound card on a Lenovo Thinkpad T470s). Volume icon is on mute, with info-popup given: "No output or input devices found". Audio backend is Phonon GStreamer. Re-installing pulseaudio didn't help. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: pulseaudio 1:10.0-2ubuntu3 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3.1 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D10p', '/dev/snd/pcmC0D9p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: KDE Date: Mon Oct 30 13:58:15 2017 InstallationDate: Installed on 2017-08-25 (66 days ago) InstallationMedia: Kubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. SourcePackage: pulseaudio Symptom: audio UpgradeStatus: Upgraded to artful on 2017-10-30 (0 days ago) dmi.bios.date: 04/17/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N1WET31W (1.10 ) dmi.board.asset.tag: Not Available dmi.board.name: 20HFCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0J40700 WIN dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN1WET31W(1.10):bd04/17/2017:svnLENOVO:pn20HFCTO1WW:pvrThinkPadT470s:rvnLENOVO:rn20HFCTO1WW:rvrSDK0J40700WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad T470s dmi.product.name: 20HFCTO1WW dmi.product.version: ThinkPad T470s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1728587/+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