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[Bug] Screen won't turn on during an active call or when receiving calls

asked 2014-08-09 19:41:16 +0300

Leo Rain gravatar image

updated 2014-11-06 10:35:49 +0300

bijjal gravatar image


My Jolla has been acting weird lately. When I call someone, the screen instantly turns off and I'm not able to turn it back on if the call is active. Pressing the power button only flashes the screen for around 0.1 seconds, which allows me to quickly press the "end call"-button and make the screen work again. Anything else, not a chance. The symptoms started a few months or so ago, and recently has been occuring in every single call.

Receiving phone calls is also bugged around 50% of the time. When receiving a call, the screen is blank and wont turn on, no matter what buttons you press. Only option here is to pull the battery or wait for the call to end and call back. After reboots the call receiving usually works just fine, and at some point just stops working.

I was thinking that maybe the proximity sensor's the culprit, but I recently enabled the Glance Screen and it's working just fine.

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I have same problems every now and then, and for me it's definitely the proximity sensor. Glance screen and double tap wake stops working too. Jolla support said it will be fixed on the next update, and if i wasn't comfortable waiting for that, i could have send to phone for warranty repair where they would have reflash Sailfish to make it work.

I get calls so rarely so i'm waiting for the next update on this problem and hope it really fixes it.

Whippler ( 2014-08-09 20:24:59 +0300 )edit

This happens with Sailfish OS 3 version on my Xperia XA2. When I call someone the screen instantly turns off. If I press the power button on side it flickers on for half a second and then off again. This prevents me from hanging up.

esbjerg ( 2019-01-01 14:13:44 +0300 )edit

1 Answer

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answered 2014-09-12 10:01:30 +0300

spiiroin gravatar image

updated 2014-12-29 09:12:22 +0300

The in-call problems practically have to be proximity sensor that is stuck to "covered" position.

When there is an incoming call, the display should turn on when/if proximity sensor is uncovered. Also, in this state the power button is not used for display state toggling (it is reserved for "silence ringing" action).

During on-going call the power button can be used to toggle display state. But when the display is on, the proximity blanking policy takes over -> stuck sensor will cause the display to turn off again.

If dust/dirt has managed to get underneath the glass, it might move about and make the sensor act up only sometimes.

... in any case, pressing the power button for 5+ seconds will power off the device - better than ripping off the battery.

Also there will be an "emergency proximity sensor override" feature available later on - the implementation details might still change, but by rapidly pressing the power button few times the sensor state is (temporarily) forced from covered to uncovered position. This should allow answering calls / silencing alarms etc even if there are issues with the proximity sensor.

EDIT / update 10 (and opt-in update 9):

  • Power key press will silence alarm and incoming call even if proximity sensor happens to be stuck
  • Pressing power key 3 times within 1 second -> forces proximity sensor state to "not-covered" state -> allows display to turn on
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Is it the same problem, if you have lock screen enabled as I have experienced few times situation, when incoming call has not triggered the lock screen via double tap and thus only way is to wait until caller ends the call.

Kari ( 2014-11-07 08:29:22 +0300 )edit

@Kari: Most likely: yes. The double tap detection is disabled when proximity sensor is covered -> proximity sensor stuck to "covered" state means that double tap will not work either.

spiiroin ( 2014-12-29 09:04:35 +0300 )edit
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Asked: 2014-08-09 19:41:16 +0300

Seen: 3,583 times

Last updated: Dec 29 '14