Switching display on or off has annoying delay

REPRODUCIBILITY (% or how often): 100*
BUILD ID = OS VERSION (Settings > About product): 4.2
HARDWARE (XA2, X10, X10 II, …): XA2, 10
UI LANGUAGE: Irrelevant
REGRESSION: (compared to previous public release: Yes, No, ?): No

DESCRIPTION:

Switching the display off or on has a delay of about half a second, but only if the display was previously in the other state for more than a few minutes. So say the display was on for 10 minutes and you switch it off (regardless of whether this is by hw-button or using the lock button from the menu), it does not immediately respond.

The same is true when turning the display on. If the display was only off for a short while this is quick, but when it’s been off for more than a few minutes it suddenly becomes slow.

The worst part is that during the delay the interface still responds to actions. So, locking the phone and putting it away might start a call, send a message, or do something else that you are not expecting.

PRECONDITIONS:

STEPS TO REPRODUCE:

  1. Switch on the display
  2. Keep it on for a few minutes
  3. Switch the display off

EXPECTED RESULT:

Toggling the display state should be instant - particularly switching it off

ACTUAL RESULT:

This may take a little while - causing unwanted UI interactions.

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)

6 Likes

The same delay is, unfortunately, still there in 4.3