I don't have any idea to troubleshoot then finally to decide to reformat the machine
** Summary changed: - authentication failed after upgrade to 4.16 using plucky proposed + authentication failed after upgrade to passwd 4.16 using plucky proposed -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to shadow in Ubuntu. https://bugs.launchpad.net/bugs/2095346 Title: authentication failed after upgrade to passwd 4.16 using plucky proposed Status in shadow package in Ubuntu: New Bug description: I've tried to upgrade to Passwd 4.16 with all the dependencies, but all my username and password authentication failed. I've tried to roll back, but it's still failed. gdm and sudo authentication failed. I tried creating a new user account, but the gdm login authentication failed. $ lsb_release -rd Description: Ubuntu Plucky Puffin (development branch) Release: 25.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/2095346/+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