Make ‘last changed’ actually be last changed and not last restarted

[poldim]

This variable doesn’t survive reboots. So, if you have some info displayed as secondary info under entities in the UI, then perform a restart, then your UI is misguiding you that things just changed even though they haven’t.

This last changed entity should accurately reflect the time/date it actually changed.

More user feedback in an older post here:

Retain last state change data of a sensor after reboot

I would really like to see the last state change of an entity retained through a reboot. My use case: I have a binary sensor talking to a remote Hikvision camera’s PIR motion in my mother’s apartment. I know I can drill down into the state history, but it would really be nice to know that the at a glance “12 minutes ago” is an accurate indication of last motion detected, and not just the time since the last reboot. Thanks.

https://reddit.com/r/homeassistant/comments/vmxkvf/can_last_changed_secondary_info_survive_restart/

[frenck (Franck Nijhof)]

Duplicate of Persistent version of "last-changed" for the UI?

Please vote and follow that one instead