https://bugs.kde.org/show_bug.cgi?id=420640
--- Comment #3 from MMz <karmare...@gmail.com> --- Sorry to wait more trials. The answer to your question is NO, that user (actually both "sudo" as UID=1000 and UID=1001) can not commit to install the package by simply using `pkcon install <packagename>` on the command line and entering its password at the next message prompt window. It fails Authentication. Than, in order to commit the install, it has to start the command as sudo using 'sudo pkcon install <packagename>`. See next copy of terminal screens for both command, in the same sequence, from UID=1000(brixiamate). And than an abstract from /var/log/auth.log file in the same moments of session. -.-.- without sudo brixiamate@BAT20n12:~$ pkcon install leocad Resolving [=========================] Querying [=========================] Testing changes [=========================] Finished [=========================] Installing [=========================] Waiting for authentication [=========================] li Finished [=========================] Fatal error: Failed to obtain authentication. -.- with sudo brixiamate@BAT20n12:~$ sudo pkcon install leocad [sudo] password di brixiamate: Resolving [=========================] Querying [=========================] Testing changes [=========================] Finished [ ] (0%) The following packages have to be installed: leocad-19.07.1-1build1.amd64 software CAD con mattoncini virtuali Proceed with changes? [N/y] y [=========================] Installing [=========================] Loading cache [=========================] Downloading packages [=========================] Running [=========================] Finished [=========================] brixiamate@BAT20n12:~$ -.- abstract from /var/log/auth.log of the same 2 install operation. . . . May 14 23:54:15 BAT20n12 polkitd(authority=local): Registered Authentication Agent for unix-process:8718:1981959 (system bus name :1.156 [/usr/bin/pkttyagent --notify-fd 14 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) May 14 23:54:26 BAT20n12 PackageKit: uid 1000 is trying to obtain org.freedesktop.packagekit.package-install auth (only_trusted:1) May 14 23:54:31 BAT20n12 polkitd(authority=local): Unregistered Authentication Agent for unix-session:9 (system bus name :1.135, object path /org/lxqt/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) (disconnected from bus) May 14 23:54:31 BAT20n12 polkitd(authority=local): Operator of unix-session:9 FAILED to authenticate to gain authorization for action org.freedesktop.packagekit.package-install for system-bus-name::1.154 [pkcon install leocad] (owned by unix-user:brixiamate) May 14 23:54:31 BAT20n12 PackageKit: uid 1000 failed to obtain auth May 14 23:54:31 BAT20n12 polkitd(authority=local): Unregistered Authentication Agent for unix-process:8718:1981959 (system bus name :1.156, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) (disconnected from bus) May 14 23:54:32 BAT20n12 polkitd(authority=local): Registered Authentication Agent for unix-session:9 (system bus name :1.158 [/usr/bin/lxqt-policykit-agent], object path /org/lxqt/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) May 14 23:55:34 BAT20n12 sudo: pam_unix(sudo:auth): Couldn't open /etc/securetty: File o directory non esistente May 14 23:55:37 BAT20n12 sudo: pam_unix(sudo:auth): Couldn't open /etc/securetty: File o directory non esistente May 14 23:55:37 BAT20n12 sudo: brixiamate : TTY=pts/1 ; PWD=/home/brixiamate ; USER=root ; COMMAND=/usr/bin/pkcon install leocad May 14 23:55:37 BAT20n12 sudo: pam_unix(sudo:session): session opened for user root by (uid=0) May 14 23:55:37 BAT20n12 polkitd(authority=local): Registered Authentication Agent for unix-process:8826:1990248 (system bus name :1.160 [/usr/bin/pkttyagent --notify-fd 10 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) May 14 23:55:41 BAT20n12 PackageKit: uid 0 is trying to obtain org.freedesktop.packagekit.package-install auth (only_trusted:1) May 14 23:55:41 BAT20n12 PackageKit: uid 0 obtained auth for org.freedesktop.packagekit.package-install May 14 23:56:45 BAT20n12 polkitd(authority=local): Unregistered Authentication Agent for unix-process:8826:1990248 (system bus name :1.160, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale it_IT.UTF-8) (disconnected from bus) May 14 23:56:45 BAT20n12 sudo: pam_unix(sudo:session): session closed for user root -.- Please, help ! Thank you :-) MMz -- You are receiving this mail because: You are watching all bug changes.