This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
eoan' to 'verification-done-eoan'. If the problem still exists, change
the tag 'verification-needed-eoan' to 'verification-failed-eoan'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-eoan

** Tags added: verification-needed-bionic

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You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/1875916

Title:
  upgrading to 4.15.0-99-generic breaks the sound and the trackpad

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I am using kubuntu LTS 18.04.
  This morning I was promped to update the kernel to the 4.15.0-99-generic. 

  After the upgrade I did not manage to get any sound. I checked
  everything, pavucontrol, alsamix, everything was in order, the streams
  showed as if they were playing, however I couldn't get any sound from
  the speakers headphones and I could not get any sound recorded either.

  I then rebooted with the previous version of the Kernel, and have my sound 
back without doing anything at all.
  --- 
  ProblemType: Bug
  ApportVersion: 2.20.9-0ubuntu7.14
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: KDE
  DistroRelease: Ubuntu 18.04
  HibernationDevice: RESUME=UUID=4a7a721a-7a2e-4644-a881-34adcb28e1ba
  InstallationDate: Installed on 2019-01-29 (455 days ago)
  InstallationMedia: Kubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  IwConfig:
   lo        no wireless extensions.
   
   wlp108s0  no wireless extensions.
  MachineType: Dell Inc. Latitude 7390 2-in-1
  Package: linux (not installed)
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-99-generic 
root=/dev/mapper/kubuntu--vg-root ro quiet splash vt.handoff=1
  ProcVersionSignature: Ubuntu 4.15.0-99.100-generic 4.15.18
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-99-generic N/A
   linux-backports-modules-4.15.0-99-generic  N/A
   linux-firmware                             1.173.17
  RfKill:
   0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  Tags:  bionic
  Uname: Linux 4.15.0-99-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm audio cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/27/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.5.0
  dmi.board.name: 0YNG30
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 10
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.5.0:bd08/27/2018:svnDellInc.:pnLatitude73902-in-1:pvr:rvnDellInc.:rn0YNG30:rvrA00:cvnDellInc.:ct10:cvr:
  dmi.product.family: Latitude
  dmi.product.name: Latitude 7390 2-in-1
  dmi.sys.vendor: Dell Inc.

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