[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

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https://bugs.launchpad.net/bugs/1775124

Title:
  static noise at login and after screen blanking

Status in linux package in Ubuntu:
  Expired

Bug description:
  At the login screen, and after screen blanking, there often (but not
  always) is loud static noise from the screen's speaker.

  In the login-screen, it stops after logging in.

  After turning the screen back on after blanking (my system settings
  have "Screen energy saving: Switch off after 10 min" set and "Suspend"
  disabled), there is the same static noise. One way I found to make is
  disappear is to invoke "pavucontrol". As soon as it opens, the noise
  is gone.

  Seems to me like some gain setting or the like is not properly
  (re)initialized after screen blanking. Strangely enough, pavucontrol
  seems to fix this by just starting, with no further user interaction.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-22-generic 4.15.0-22.24
  ProcVersionSignature: Ubuntu 4.15.0-22.24-generic 4.15.17
  Uname: Linux 4.15.0-22-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Tue Jun  5 08:01:58 2018
  InstallationDate: Installed on 2018-06-01 (3 days ago)
  InstallationMedia: Kubuntu 18.04 LTS "Bionic Beaver" - Release amd64 
(20180426)
  SourcePackage: linux-signed
  UpgradeStatus: No upgrade log present (probably fresh install)

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