Public bug reported:

1. Set Security & Privacy -> Lock phone to "After 10 minutes"
2. Lock phone (or wait 10 minutes for it to lock).
3. Receive a text.

Expected behaviour: screen turns off very soon after to conserve battery
(I expect between 5 and 60 seconds).

Actual behaviour: screen remains on for 10 minutes, draining battery.

Even worse, if I set the lock to "Never" then after receiving a text the
screen will never turn off. In this case I expect to take responsibility
for turning the screen off when I am done using it, but I expect the
phone not to turn the screen back on when I am not around and receive a
notification unless the phone does time it out in that case.

I think the screen lock timeout should be completely separate from the
lock screen timeout. I would like to set 10 minutes or never for the
screen lock timeout, but I still want the lock screen to time out and
turn the display off after a few seconds.

I found bug 1420493 which is in a related area but doesn't refer to the
lock screen timeout itself. My failure case is a use case about battery
drain, rather than needing to repeatedly re-enter the passcode.

** Affects: ubuntu-system-settings (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1472262

Title:
  Screen lock and lock screen timeouts are conflated

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