Session never locks automatically if no screen off timeout set

[Joonas Saarinen]

My system settings for Brightness and Lock:

Turn screen off when inactive for: Never
Lock: On
Lock screen after: 30 minutes

The problem: when there is no screen off timeout but there is a lock timeout, the session never locks.

Under this configuration, I expect the OS to show a black lock screen, in the same manner when I lock the session manually.

[Chris Wilson (notgary-deactivatedaccount)]

I'm able to confirm this, but I've added a design task since I'm not sure if this is intentional. From the wording of the text on the Brightness Settings, I get the impression that automatic locking of the screen is dependant on the screen first being turned off, so if it's still on then it can't lock.

[Joonas Saarinen (jza)]

If it is by design and no screen timeout is set, it might make sense to gray out the lock controls.

[Paul White (paulw2u)]

This issue has sat "Incomplete" for more than seven years now without any further comment. I'm going to close it as "Invalid".

Please feel free to re-open this bug report if this is still an issue relevant to a currently supported release of Ubuntu.