Desktops cannot currently tell the difference between a power action being set to challenge permanently (i.e. because the sysadmin wanted to restrict the given user) and a power action being set to challenge because it's temporarily inhibited. Thus, a desktop might take an action that is valid in the first case but not the second case. For instance: GNOME hides all of its automatic suspend settings from the UI whenever a sleep inhibitor is active. This now returns a new state: "inhibited". It communicates to the desktop that the action is available normally, but at the moment the desktop isn't allowed to perform the action due to an inhibitor. Related: https://github.com/systemd/systemd/issues/37311
System and Service Manager
Details
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