[Bug 1965439] Re: software-properties-qt can no longer launch when called by pkexec

Erich Eickmeyer  1965439 at bugs.launchpad.net
Wed Apr 20 14:54:22 UTC 2022

** Description changed:

  See description below. As the driver manager is done inside software-
  properties-qt, it's basically the same bug, but now it's affected by
  something we can't exactly get into the mechanism of: plasma-discover's
  "Software Sources" link.
+ Steps to recrate:
+ 1) Open Plasma-discover
+ 2) Go to Settings
+ 3) Under click on "Software Sources"
+ 4) Attempt to enter password
+ Expected: Software properties opens
+ Actual: Pkexec keeps asking for password.
+ ------
  Earlier description:
  The driver manager for both Ubuntu Studio and Kubuntu can no longer
  launch due to some updated security measures in PolicyKit.
  The original behavior was that systemsettings would open
  /usr/bin/ubuntustudio-driver-manager (or /usr/bin/kubuntu-driver-manger)
  via pkexec, which would then open software-settings-qt. Unfortunately,
  the new behavior does not act correctly to pkexec and pkexec does not
  see the user as available in the sudoers file.
  The only way around this was to pass "export DISPLAY=:0" inside the
  appropriate driver manager executable with the command "sudo software-
  properties-qt". The KCM itself needs to execute the driver-manager via
  xterm, which then prompts for a password. It's ugly, but it works.
  I will attach a debdiff for the kubuntu-settings package.
  ProblemType: Bug
  DistroRelease: Ubuntu 22.04
  Package: ubuntustudio-default-settings 22.04.19 [modified: usr/share/sddm/themes/ubuntustudio/theme.conf]
  ProcVersionSignature: Ubuntu 5.15.0-22.22-lowlatency 5.15.19
  Uname: Linux 5.15.0-22-lowlatency x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset nvidia
  ApportVersion: 2.20.11-0ubuntu79
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: KDE
  Date: Thu Mar 17 12:19:44 2022
  InstallationDate: Installed on 2021-03-20 (361 days ago)
  InstallationMedia: Ubuntu-Studio 21.04 "Hirsute Hippo" - Alpha amd64 (20210320)
  PackageArchitecture: all
  SourcePackage: ubuntustudio-default-settings
  UpgradeStatus: Upgraded to jammy on 2021-11-07 (130 days ago)
  modified.conffile..etc.skel..local.share.konsole.Profile: [deleted]

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  software-properties-qt can no longer launch when called by pkexec

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