[Bug 2095118] [NEW] Desktop login screen sometimes flickers, accompanied by rfkill dmesg logspam

[Ryan Lee]

Public bug reported:

Sometimes, when booting into a Plucky VM (provisioned via virt-manager),
the login screen flickers constantly, rendering the GUI unusable.
Occasionally, the flickering pauses long enough for me to type in the
first few characters of my password, before the flickering starts again
and kicks me back to the username selection screen. Logging in via SSH,
I can see that each flicker is accompanied by dmesg logspam
(representative example below):

[  188.853451] rfkill: input handler enabled
[  189.689764] rfkill: input handler disabled
[  190.463262] rfkill: input handler enabled
[  191.379945] rfkill: input handler disabled
[  192.284689] rfkill: input handler enabled
[  193.072647] rfkill: input handler disabled

ProblemType: Bug
DistroRelease: Ubuntu 25.04
Package: rfkill 2.40.2-1ubuntu2
ProcVersionSignature: Ubuntu 6.11.0-8.8-generic 6.11.0
Uname: Linux 6.11.0-8-generic x86_64
ApportVersion: 2.31.0-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: unknown
Date: Thu Jan 16 11:57:46 2025
InstallationDate: Installed on 2025-01-14 (2 days ago)
InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Daily amd64 (20250114)
ProcEnviron:
 LANG=en_US.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: util-linux
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug plucky

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https://bugs.launchpad.net/bugs/2095118

Title:
  Desktop login screen sometimes flickers, accompanied by rfkill dmesg
  logspam

Status in util-linux package in Ubuntu:
  New

Bug description:
  Sometimes, when booting into a Plucky VM (provisioned via virt-
  manager), the login screen flickers constantly, rendering the GUI
  unusable. Occasionally, the flickering pauses long enough for me to
  type in the first few characters of my password, before the flickering
  starts again and kicks me back to the username selection screen.
  Logging in via SSH, I can see that each flicker is accompanied by
  dmesg logspam (representative example below):

  [  188.853451] rfkill: input handler enabled
  [  189.689764] rfkill: input handler disabled
  [  190.463262] rfkill: input handler enabled
  [  191.379945] rfkill: input handler disabled
  [  192.284689] rfkill: input handler enabled
  [  193.072647] rfkill: input handler disabled

  ProblemType: Bug
  DistroRelease: Ubuntu 25.04
  Package: rfkill 2.40.2-1ubuntu2
  ProcVersionSignature: Ubuntu 6.11.0-8.8-generic 6.11.0
  Uname: Linux 6.11.0-8-generic x86_64
  ApportVersion: 2.31.0-0ubuntu2
  Architecture: amd64
  CasperMD5CheckResult: unknown
  Date: Thu Jan 16 11:57:46 2025
  InstallationDate: Installed on 2025-01-14 (2 days ago)
  InstallationMedia: Ubuntu 25.04 "Plucky Puffin" - Daily amd64 (20250114)
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: util-linux
  UpgradeStatus: No upgrade log present (probably fresh install)

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