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WLAN off in Standby - Is doze mode the probleme?

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SirRobin
Contributor
Contributor
March 2016
March 2016

WLAN off in Standby - Is doze mode the probleme?

After first hours with the marshmallow update on my tablet z4, one thing is not as it should be:

WLAN setting is active on always but after screen ist dark, it seems that wlan is shut down after a few seconds...so is this a doze mode thing? i´m not sure if there is an other option to fix this thing?

--
Gruß Sir Robin
--> KD-55XE9305 --
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random_passerby
Visitor
March 2016
March 2016

I actually had this problem in Lollipop as well, but I found a way to fix this in Mashmallow by disabling the battery optimization for the module  com.sonymobile.wifi (under Settings > Battery usage > Battery optimization > All apps).

I think the battery drains a little quicker this way, but at least it worked for me.

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14 REPLIES 14
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_alexdon_
Expert
March 2016
March 2016

So keep wifi on during sleep is set to always? It shouldn't disconnect unless you walk out of range. Does that happen?

alexdon
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SirRobin
Contributor
Contributor
March 2016
March 2016

No, device is next to me and wlan is available. 

Wifi on during sleep is set to always, yes.

--
Gruß Sir Robin
--> KD-55XE9305 --
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_alexdon_
Expert
March 2016
March 2016

@SirRobin Can you please check if the same occurs in safe mode?

EDIT: One more question, does this occur in a specific app? Or is it visible that the network is disconnected when you turn the display back on?

alexdon
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SirRobin
Contributor
Contributor
March 2016
March 2016

Seems to be the same in safe mode and no, not in a specific app, it´s visible when turn the display back on...

--
Gruß Sir Robin
--> KD-55XE9305 --
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_alexdon_
Expert
March 2016
March 2016

Will try to grab more info on this.

alexdon
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Rickard
Master
March 2016
March 2016

@SirRobin

So if you turn the display off while you have the WiFi-icon showing it's connected, wait 10-20 sec. and then turn the display on again, there's no WiFi-icon?

Does this also happen if you have a charger connected?

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SirRobin
Contributor
Contributor
March 2016
March 2016

Yes, exactly. Wifi-Icon comes back a few seconds after display on, also when charger is connected.

--
Gruß Sir Robin
--> KD-55XE9305 --
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Rickard
Master
March 2016
March 2016

I've tested this here but it stays connected for me so not sure what could cause this.

Could you try to reset network settings and see if that helps? You can do that from Settings -> Backup & reset -> Network settings reset. Please note that this will perform these actions:

  • Allows background data sync.
  • Clears mobile data limits.
  • Deletes all Wi-Fi SSIDs.
  • Disconnects all tethered interfaces.
  • Forgets paired devices.
  • Removes all app data restrictions.
  • Sets network selection mode to automatic.
  • Sets preferred mobile network type to the best available.
  • Turns off Airplane mode.
  • Turns off Bluetooth.
  • Turns off data roaming.
  • Turns off mobile hotspot.
  • Turns off VPN.
  • Turns on mobile data.
  • Turns on Wi-Fi.
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Partha1b
Visitor
March 2016
March 2016

Pretty drastic to a percived problem? Slightly_smiling_Face

Have you optimzed all your apps for battery usage? If so, try unoptimizing Google connectivity services and see if this problem goes away.

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