Lubuntu is suffering what seems to be a related failure although I tracked that down to what I thought was a different upstream bug report. In Lubuntu's case the lxqt-policykit-agent suffers a SIGSEGV as a side- affect (I think) of polkit failing to authorise.
It was originally discovered when, using the GUI, an additional user was added with 'sudo' membership. This broke the subsequent ability of the new user to make any user account changes via the GUI because they'd get an authentication challenge and then failure. That failure seems to exercise a rarely followed code path that causes the SIGSEGV, and is likely unrelated to the underlying policykit issue. That new 'sudo' member is also prevented from using privileged tools like "gparted". bug #1828663 "policykit failures due to internal user id mismatch" -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apport in Ubuntu. https://bugs.launchpad.net/bugs/1821415 Title: pkexec fails in a non-graphical environment Status in PolicyKit: New Status in apport package in Ubuntu: Triaged Status in policykit-1 package in Ubuntu: Triaged Bug description: The plymouth apport source package hooks wants to gather log files as the root user and apport provides a policy kit policy for collecting that information. This works fine in a graphical environment but not in a non-graphical one. N.B. you first need to create a /var/log/plymouth-debug.log file for the plymouth apport package hook to actually trigger this. ubuntu@disco:~$ ubuntu-bug plymouth *** Collecting problem information The collected information can be sent to the developers to improve the application. This might take a few minutes. ..........==== AUTHENTICATING FOR com.ubuntu.apport.root-info === Authentication is required to collect system information for this problem report Authenticating as: Ubuntu (ubuntu) Password: .... polkit-agent-helper-1: error response to PolicyKit daemon: GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed: No session for cookie ==== AUTHENTICATION FAILED === Error executing command as another user: Not authorized This incident has been reported. Subsequently, bug reports from servers will contain less information. To manage notifications about this bug go to: https://bugs.launchpad.net/policykit-1/+bug/1821415/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
