Public bug reported:
after i installed the latest update for Kubuntu 17.10 my audio devices
disappeared and i lost the ability to listen to music or play sounds on
my laptop. it worked fine before the update!
(Caveat: sometimes ads or youtube will play through the speakers or
headphones but it is unpredictable and i have no control over volume or
muting.)
the Plasma Audio Volume settings show "No Output Devices Available" and
"No Input Devices Available". it worked fine before the last update.
this is a Lenovo P51, a fairly popular laptop for linux. my laptop is a
high end version with an E3-1505M CPU and "hybrid graphics".
i do not update the software every day so the problem may have been
introduced upto two weeks ago, but no earlier then that.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-37-generic 4.13.0-37.42
ProcVersionSignature: Ubuntu 4.13.0-37.42-generic 4.13.13
Uname: Linux 4.13.0-37-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
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: Tue Apr 3 21:38:36 2018
HibernationDevice: RESUME=UUID=1c6e24a0-ad92-4e31-bad8-91d3ac06ee02
InstallationDate: Installed on 2018-01-12 (81 days ago)
InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Release amd64 (20171017.1)
MachineType: LENOVO 20HHCTO1WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.13.0-37-generic.efi.signed
root=/dev/mapper/p51vg-root ro quiet splash vt.handoff=7
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No
PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-4.13.0-37-generic N/A
linux-backports-modules-4.13.0-37-generic N/A
linux-firmware 1.169.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/13/2017
dmi.bios.vendor: LENOVO
dmi.bios.version: N1UET31W (1.05 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20HHCTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN1UET31W(1.05):bd02/13/2017:svnLENOVO:pn20HHCTO1WW:pvrThinkPadP51:rvnLENOVO:rn20HHCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.family: ThinkPad P51
dmi.product.name: 20HHCTO1WW
dmi.product.version: ThinkPad P51
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
** Tags: amd64 apport-bug artful regression-update
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https://bugs.launchpad.net/bugs/1761051
Title:
laptop sound broken in latest update -- "No output or input devices
found"
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