Norbert, the upstream bug is https://gitlab.gnome.org/GNOME/gnome- settings-daemon/issues/46
Once that issue is fixed in GNOME, it can be fixed in the current development release of Ubuntu and then in Ubuntu 18.04 LTS. Comment #18 here was about something different so you can probably ignore that. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-settings-daemon in Ubuntu. https://bugs.launchpad.net/bugs/1769372 Title: Prompt the user when the power button is pressed on a VM Status in gnome-control-center package in Ubuntu: Invalid Status in gnome-settings-daemon package in Ubuntu: Triaged Bug description: Steps to reproduce: 1. Install Ubuntu 18.04 LTS as VirtualBox guest 2. Login to session 3. Press ACPI Power button/key Expected behavior: * Ubuntu asks user about action Actual behavior: * Ubuntu immediately shutdowns Note 1: Problem exists with both VirtualBox 5.1.36 and 5.2.10 (guest additions and extpack are installed and have corresponding versions). Ubuntu 16.04.4 LTS amd64 is a host. Note 2: Problem exists if use QEMU-KVM (sudo kvm -m 1536 -drive file=/dev/sdc,format=raw) too. Sending system_powerdown from <Ctrl+Alt+2> shutdowns system without prompt. Workaround/fix (1) gsettings set org.gnome.settings-daemon.plugins.power power-button- action interactive Workaround/fix (2) Settings > Power > Suspend & Power Button > When the Power Button is pressed = Power Off (actually does prompt the user) ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-desktop 1.417 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat May 5 18:32:06 2018 InstallationDate: Installed on 2018-04-28 (7 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) SourcePackage: ubuntu-meta UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2018-04-28 (8 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) Package: gnome-settings-daemon PackageArchitecture: amd64 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Tags: bionic Uname: Linux 4.15.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1769372/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp