FWIW there's nothing preventing the user at the keyboard from going Ctrl+Alt+F1 and pressing Ctrl+Alt+Del or the power button...
** Changed in: canonical-devices-system-image Status: New => Triaged ** Changed in: unity8 (Ubuntu) Status: New => Triaged ** Changed in: canonical-devices-system-image Importance: Undecided => High ** Changed in: unity8 (Ubuntu) Importance: Undecided => High ** Changed in: canonical-devices-system-image Assignee: (unassigned) => Michał Sawicz (saviq) ** Changed in: canonical-devices-system-image Importance: High => Medium ** Changed in: unity8 (Ubuntu) Importance: High => Medium -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1667655 Title: User can terminate a session from the lock screen Status in Canonical System Image: Triaged Status in unity8 package in Ubuntu: Triaged Bug description: Test Case 1. Start a unity8 session 2. Lock the screen 3. Open the system menu 4. Tap on 'Close session' or 'Shutdown' Actual result The active session is closed or the system powered off Expected result When a user session is locked the only action possible should to suspend the machine or switch to another account, certainly not to close someone else session or shutdown the machine which also means a risk of data loss. ProblemType: Bug DistroRelease: Ubuntu 17.04 Package: unity8 8.15+17.04.20170216.1-0ubuntu1 ProcVersionSignature: Ubuntu 4.10.0-8.10-generic 4.10.0-rc8 Uname: Linux 4.10.0-8-generic x86_64 ApportVersion: 2.20.4-0ubuntu2 Architecture: amd64 Date: Fri Feb 24 12:30:27 2017 InstallationDate: Installed on 2014-07-23 (946 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: unity8 UpgradeStatus: Upgraded to zesty on 2016-11-15 (100 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1667655/+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