Public bug reported:
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]
** Affects: kubuntu-settings (Ubuntu)
Importance: Undecided
Status: Confirmed
** Affects: ubuntustudio-default-settings (Ubuntu)
Importance: Critical
Assignee: Erich Eickmeyer (eeickmeyer)
Status: In Progress
** Affects: kubuntu-settings (Ubuntu Jammy)
Importance: Undecided
Status: Confirmed
** Affects: ubuntustudio-default-settings (Ubuntu Jammy)
Importance: Critical
Assignee: Erich Eickmeyer (eeickmeyer)
Status: In Progress
** Tags: amd64 apport-bug jammy
** Also affects: ubuntustudio-default-settings (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: kubuntu-settings (Ubuntu)
Importance: Undecided
Status: New
** Changed in: kubuntu-settings (Ubuntu Jammy)
Status: New => Confirmed
** Changed in: ubuntustudio-default-settings (Ubuntu Jammy)
Status: New => In Progress
** Changed in: ubuntustudio-default-settings (Ubuntu Jammy)
Assignee: (unassigned) => Erich Eickmeyer (eeickmeyer)
** Changed in: ubuntustudio-default-settings (Ubuntu Jammy)
Importance: Undecided => Critical
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Bugs, which is subscribed to kubuntu-settings in Ubuntu.
https://bugs.launchpad.net/bugs/1965439
Title:
Driver manager KCM can no longer launch
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