Comment 0 for bug 1965439

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]