topic WLAN off in Standby - Is doze mode the probleme? in Tablets

WLAN off in Standby - Is doze mode the probleme?

SirRobin — Wed, 09 Mar 2016 12:43:35 GMT

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?

Re: WLAN off in Standby - Is doze mode the probleme?

_alexdon_ — Wed, 09 Mar 2016 12:45:59 GMT

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

Re: WLAN off in Standby - Is doze mode the probleme?

SirRobin — Wed, 09 Mar 2016 14:04:33 GMT

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

Wifi on during sleep is set to always, yes.

Re: WLAN off in Standby - Is doze mode the probleme?

_alexdon_ — Wed, 09 Mar 2016 18:41:03 GMT

@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?

Re: WLAN off in Standby - Is doze mode the probleme?

SirRobin — Wed, 09 Mar 2016 21:54:33 GMT

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

Re: WLAN off in Standby - Is doze mode the probleme?

_alexdon_ — Wed, 09 Mar 2016 21:59:25 GMT

Will try to grab more info on this.

Re: WLAN off in Standby - Is doze mode the probleme?

Rickard — Thu, 10 Mar 2016 07:58:57 GMT

@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?

Re: WLAN off in Standby - Is doze mode the probleme?

SirRobin — Thu, 10 Mar 2016 15:53:13 GMT

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

Re: WLAN off in Standby - Is doze mode the probleme?

Rickard — Fri, 11 Mar 2016 07:22:54 GMT

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.

Re: WLAN off in Standby - Is doze mode the probleme?

Partha1b — Sun, 13 Mar 2016 16:47:06 GMT

Pretty drastic to a percived problem?

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

Re: WLAN off in Standby - Is doze mode the probleme?

SirRobin — Mon, 14 Mar 2016 08:37:49 GMT

Yes, all apps are optimized for battery usage, i think this is default after upgrade, right?

So, what functions are important to be unoptmized like the google connectivity services?

Re: WLAN off in Standby - Is doze mode the probleme?

random_passerby — Wed, 16 Mar 2016 00:08:00 GMT

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.

Re: WLAN off in Standby - Is doze mode the probleme?

SirRobin — Thu, 17 Mar 2016 07:49:38 GMT

Thank you very much! I will give it a try... so, are there any other apps or services which are important to disabling battery optimization?

Re: WLAN off in Standby - Is doze mode the probleme?

random_passerby — Sun, 20 Mar 2016 05:30:18 GMT

@SirRobin wrote:
Thank you very much! I will give it a try... so, are there any other apps or services which are important to disabling battery optimization?

Not that I'm aware of. I just have the battery optimization for the WIFI module disabled. That alone solved the drop-out problem I was experiencing with online radio.

Re: WLAN off in Standby - Is doze mode the probleme?

menü — Tue, 27 Dec 2016 12:55:04 GMT

That problem still append with the release 32.2.A.5.11 (6.0.1) for the Z5