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Wifi unable to connect from Transformer's Sleep Mode

Guys, I have a problem with the Transformer and it's Wifi that is driving me mad!
Regardless if I have wifi running in the background or put in Plane Mode when I turn on the screen after a short interval I notice the wifi has dropped and there is no longer an internet connection.
Not only that I can not get it to start again unless I switch off the TF and reboot.
On investigation on the settings, when I click on Wireless & Networks I notice the right hand pane of Wifi & Wifi settings to be flashing as if it is trying to connect but gets locked out over and over. As such you can not access any of the wireless settings.
I would appreciate any assistance you can shed on this problem.
Many thanks in advance.
Beards
EDITED:
I believe I have now found what was causing the problem and have explained in detail in Post 10 below.
Basically I found it was after updating to v3.2.1 ~ the WiFi Settings/WiFi Disconnection Policy 'When screen is tuned off' & 'Never when plugged in' was interfering with the state of WiFi, causing it to poll and repeatedly try and switch itself back on, thus a constant flash and inability to activate WiFi..

Ddvvvvvvvvv

Fire n mage said:
Ddvvvvvvvvv
Click to expand...
Click to collapse
Sorry... what does that mean?

Searched the internet, and discovered two things, I did both.
1) Removed the maps update.
2) Changed the the channel on my router to 6
Works fine now.

I'm having this same problem for the past few weeks. Whenever the WIFI goes to sleep, I cannot turn it on unless I reboot my Transformer. It's sort of annoying.

It's got to be software orientated that is interfering with the TF.
I can not think of anything other than software causing it to continually 'flash' as it tries over and over again to connect.
I need to look into date captured software updates to see if I can narrow down the culprit.
Looks like I have a long job ahead of me..... sigh!

I got the same issue, after maps update, but apparently It's got to do with use wifi for determining your location, if i switch this off , tablet connects fine after returning from sleep.
regards
kef

kefje27 said:
I got the same issue, after maps update, but apparently It's got to do with use wifi for determining your location, if i switch this off , tablet connects fine after returning from sleep.
regards
kef
Click to expand...
Click to collapse
Mine has nothing to do with Maps and it's doing this continuous polling even when woken from Plane Mode and then trying to switch wifi back on.
I have a theory and am looking at it.... Will report back later.

Any news yet?
Sent from my Transformer TF101 using Tapatalk

LordNickerchen said:
Any news yet?
Sent from my Transformer TF101 using Tapatalk
Click to expand...
Click to collapse
Yes, I've worked out what the problem for me was and was just coming back to report when I read your post....
Basically for me it is to do with Settings/Wireless & Networks/Wifi Settings/Wifi Disconnection Policy.
After I updated to 3.2.1 I changed the policy from 'Never (uses more battery power)' to 'When screen is tuned off'.
Thinking about it the problem has only been since I changed the policy.
So, I changed it back to 'Never' and the wifi remained on and the problem I was getting disappeared.
I then changed it back to 'When screen is tuned off' and the problem came back.
I then altered it to 'Never when plugged in' with the TF not plugged in and the problem was still there.
Plugging the TF in and the problem disappeared.
Only by changing it back to 'Never' when not plugged in does my wifi remain on ~ which if you think about it is exactly what it is meant to do.
Therefore, for me it would appear changing the policy to turn off the wifi is causing this issue of when you wake the phone up from sleep you can not reactivate the wifi and when looking at the wireless settings the whole of the right hand page of wireless settings are continuously flashing thus not allowing you to access and alter them.
At that point the only way you can reactivate wifi is by doing a power down and reboot.
So guys...... Has anyone else noticed the wifi disconnection policy effecting your wifi from sleep?

Mine stopped reconnecting again last night, the tablet would continuously reboot.
The only solution was to reboot the router.
I will try the keep on and I have turnoff wifi location.
Lets see

FSB said:
Mine stopped reconnecting again last night, the tablet would continuously reboot.
The only solution was to reboot the router.
I will try the keep on and I have turnoff wifi location.
Lets see
Click to expand...
Click to collapse
How did you get on with changing the wifi disconnection policy?

Changing the disconnection policy never worked, note sure if this is the best solution, as I recon it will drain the battery.

FSB said:
Changing the disconnection policy never worked, note sure if this is the best solution, as I recon it will drain the battery.
Click to expand...
Click to collapse
Interesting.... as it is the only way I can get a stable WiFi that will turn back on from Screen Off.
Even though it says the battery may use more power it doesn't seem all that much different if anything at all... Prior to the latest update I had the policy set to 'When screen is tuned off'.
After the update it defaulted back to 'Never (uses more battery power)' and again after changing it back to 'When screen is tuned off' this is when my problem started.
I am thinking this is something to do with my TF as no one else has reported a problem with WiFi and the 'When screen is tuned off' policy.

I just re-read my post.
It should read
Changing the disconnection policy to "never". Worked.
Note sure if this is the best solution, as I recon it will drain the battery.
Sorry.
What you describe is exactly what happened to mine.

FSB said:
I just re-read my post.
It should read
Changing the disconnection policy to "never". Worked.
Note sure if this is the best solution, as I recon it will drain the battery.
Sorry.
What you describe is exactly what happened to mine.
Click to expand...
Click to collapse
Thanks.... This now makes a lot of sense in that it points to a possible bug with the WiFi policies.

This is driving me crazy. I have tried everythinig mentioned, but my TF still goes through the wifi connection loop. Gotta be software related...

tn8shooter said:
This is driving me crazy. I have tried everythinig mentioned, but my TF still goes through the wifi connection loop. Gotta be software related...
Click to expand...
Click to collapse
Did you try changing the Wifi disconnection policy to 'Never (uses more battery power)'?
That sorted it out for me.
It's since Honeycomb 3.2.1 came in I now find I can not use any other disconnection policy.

This happens to me if I select anything other than "Never (uses more battery power)"
I have found though that if I uninstall the google maps update, and deselect Wifi Localization, that I can have the TF set to "Never when plugged in" or "When screen is turned off".
( see: google.com/support/forum/p/Google+Mobile/thread?tid=4778cb9a3f187b75&hl=en ) (sorry for broken link - I am new and cannot post these)
So it seems like either a problem with Google maps (that may be specific to the TF), or a problem with the TF firmware?

Wifi problem

Sometimes, my wifi will hang When i switch the wifi on, later the wifi state is showing as turning off and keep on the state until i reboot the phone, finally the wifi can finally turned on. I encounter this issue no matter i was on froyo or gb!!! it is anonying that i must restart the phone several time to keep the wifi working.
Sent from my LG-P920 using XDA

I want to know if any of optimus 3d user have encountered this problem, if not too much users have this problem, i will send back to lg for repair. I want to say when i switch on wifi for ten time. I will encounter this problem for three time no matter which rom or which version of android i am using.because i have encounter this problem in many roms
Sent from my LG-P920 using XDA

it's a common issue, not sure if just with GB, the problem with this is that your battery drains too fast when this happens
just check if the phone warms up if so u have an issue then just restart
lg has not told anything about this issue, they thinkg it's an specific issue from one carrier's fw but it looks like it's in general with GB, my old x10 had the same issue but no battery drain

But i have this issue when i using froyo. Now i am using froyo but have this issue two times a days. Its very annoying to me yo know
Sent from my LG-P920 using XDA

No solution yet!?
or it just depend on the firmware i installed!?
Btw, thank you for your reply
Sent from my LG-P920 using XDA

There isn't any real solution. It happens to me as well as to other people (search the O3D threads here and you'll find many reporting the same), no matter if you have Froyo or GB.
However, in my case it doesn't happen two times a day but less often. It never occurs when I wake up my phone and wifi reconnects. It only happens when I turn on/off the airplane mode (but not all the times).
Do you have this issue when the phone is waking up normally (with the wifi always on) or when you turn on/off the airplane mode or turn off/on the wifi manually?

botson71 said:
There isn't any real solution. It happens to me as well as to other people (search the O3D threads here and you'll find many reporting the same), no matter if you have Froyo or GB.
However, in my case it doesn't happen two times a day but less often. It never occurs when I wake up my phone and wifi reconnects. It only happens when I turn on/off the airplane mode (but not all the times).
Do you have this issue when the phone is waking up normally (with the wifi always on) or when you turn on/off the airplane mode or turn off/on the wifi manually?
Click to expand...
Click to collapse
if only occur in turning on/off the airplane, it will be fine for me as i seldom use the airplane mode. however, the issue occur when i turn on or off the wifi manually. i have tried to turn off and on the wifi repeated ten times when the phone restart, i have no problem. however, after i close the wifi for about 1 or 2 hour and enable again, it sometime have the problem when i switch on the wifi. i really have no ideas why this problem will occur.

Well when you turn the wifi on/off manually, I guess that it's the same thing (for the wifi connectivity) like turning on/off the airplane mode manually, so it causes the same problem.
Do you have this issue when you just wake up your phone (with wifi on)? If so, you could keep your wifi always on when you outside from home/work. If it's not connected it doesn't consume much battery.

botson71 said:
Well when you turn the wifi on/off manually, I guess that it's the same thing (for the wifi connectivity) like turning on/off the airplane mode manually, so it causes the same problem.
Do you have this issue when you just wake up your phone (with wifi on)? If so, you could keep your wifi always on when you outside from home/work. If it's not connected it doesn't consume much battery.
Click to expand...
Click to collapse
when the wifi problem happens, i must reboot the phone manually, then the wifi will switch on automatically after the phone has rebooted. however, i discover that, wifi drain battery very much when compare to just open 2G network alone, therefore, i would like to close wifi when i just put it to standby. i think this is not a real solution and i have this problem two time a day. it is very annoying actually.
thank you for your reply!!!

I posted this already in thread i started labeled not too clearly http://forum.xda-developers.com/showthread.php?t=1519436
It's a process called tiwlan_wq which starts using cpu @ 48% constantly and drains battery quickly.
No idea how to solve this i've kept the wifi at standard setting of off when phone is in standby or even on always but this occurs randomly.
I thought new v20g rom would have sorted out some issues but no and i'm dead bent on selling this POS LG phone.

sak500 said:
I posted this already in thread i started labeled not too clearly http://forum.xda-developers.com/showthread.php?t=1519436
It's a process called tiwlan_wq which starts using cpu @ 48% constantly and drains battery quickly.
No idea how to solve this i've kept the wifi at standard setting of off when phone is in standby or even on always but this occurs randomly.
I thought new v20g rom would have sorted out some issues but no and i'm dead bent on selling this POS LG phone.
Click to expand...
Click to collapse
try to set the wifi policy to "never", however, the problem still have, but battery drain is lessened i think

[Q] WiFi turning off when device is sleeping

My WiFi is intermittently disconnecting when my device is asleep. I wake it up and the WiFi is often 'disconnected', but connects automatically once it's awake.
When I wake my phone, there's no WiFi connection and there's a little '?' next to the mobile signal icon - but when I wake it up, the WiFi connects and the '?' on the mobile signal disappeared.
'Keep WiFi on during the sleep' is toggled to 'always', so I really can't understand why it's doing this.
I've had Lollipop for about a month now, but it's only started happening today. I've 'forgot' the network, restarted the device and reconnected, but it's still dropping out when my phone's asleep.
Cheers

Have you installed any power management Apps recently?

goto to settings>WiFi click menu>advanced. check if the option keep WiFi on during sleep is set to always.

vickyjusme said:
goto to settings>WiFi click menu>advanced. check if the option keep WiFi on during sleep is set to always.
Click to expand...
Click to collapse
Op said it's set to Always in his original post

StLewi said:
My WiFi is intermittently disconnecting when my device is asleep. I wake it up and the WiFi is often 'disconnected', but connects automatically once it's awake.
When I wake my phone, there's no WiFi connection and there's a little '?' next to the mobile signal icon - but when I wake it up, the WiFi connects and the '?' on the mobile signal disappeared.
'Keep WiFi on during the sleep' is toggled to 'always', so I really can't understand why it's doing this.
I've had Lollipop for about a month now, but it's only started happening today. I've 'forgot' the network, restarted the device and reconnected, but it's still dropping out when my phone's asleep.
Cheers
Click to expand...
Click to collapse
I am actually having this same problem. Never happened with KitKat but lollipop I notice it. Also have WiFi set to "always" bit still doesn't work.

gauthier81 said:
I am actually having this same problem. Never happened with KitKat but lollipop I notice it. Also have WiFi set to "always" bit still doesn't work.
Click to expand...
Click to collapse
Did you manage to find a solution to this?

If rooted, and using Titanium backup, avoid backing up the wifi settings. Just touching the two files with TiB, breaks wifi connectivity.
Search Google on how to actually setup TiB for this.
Sent using Tapatalk.

nflwideout86 said:
Did you manage to find a solution to this?
Click to expand...
Click to collapse
No I have not. Seems to do it in various roms. Weird.

Are you on the 5.1.1 radio? Mine has been doing this ever since updating. It has done it on stock 5.1.1, CM CAF 12.1, and the M Dev Preview.

Did Anybody fund a solution to this? My Nexus 6 turns WiFi off almost every time the device sleeps. Ive checked and Keep WiFi on is set to ALWAYS

kandrews8098 said:
Did Anybody fund a solution to this? My Nexus 6 turns WiFi off almost every time the device sleeps. Ive checked and Keep WiFi on is set to ALWAYS
Click to expand...
Click to collapse
I've been having this issue as well. I've contacted google and they've sent me three replacements. Same issue on all of them.
I thought it could be my router, but this isn't happening to any of my other 8 devices. I also see this problem when I'm on different Wifi in different locations. They're getting a specialist to look into my case now

Me also facing issue, I thought it was the Franco or lean droid app that I use to disable network signal when screen is off

Same issue in Marshmallow
Well ever since i updated to Marshmallow i am facing this on my N5.
First i thought its because defult battery optimization that comes with this. So i removed "Google connectivity service" from optimization but it din't help.
"Keep wifi on during sleep" flag is set to 'always' as you guys..
Can't say bug or feature but its annoying..

Anyone has solutions?

Sanshis said:
Well ever since i updated to Marshmallow i am facing this on my N5.
First i thought its because defult battery optimization that comes with this. So i removed "Google connectivity service" from optimization but it din't help.
"Keep wifi on during sleep" flag is set to 'always' as you guys..
Can't say bug or feature but its annoying..
Click to expand...
Click to collapse
Same issue for me...
Inviato dal mio Nexus 7 utilizzando Tapatalk

[Q] Wifi issue ! (Lollipop 5.1)

Hi All,
I got the Lollipop 5.1 OTA 2 days ago and installed it - everything went smooth and the phone working fine...
But I noticed that if I reboot my router (or turn it off / on again) the Wifi don't reconnect unless I turn on the screen (the second I turn on the screen the wifi connect normally).
I didn't have this issue with Lollipop 5.0.1
P.S.
I know that this is happening because I have a led on my router telling me if any of my Wifi devices is connected or not. And to make sure I also entered the router settings to see if my phone is connected or not.
Anyone noticed that issue with the new lollipop 5.1 ?
Cheers,

I think that your problem is not switching off the router. The problem is when your phone goes to suspension (screen off) and then it drops the wifi off.
My Nexus 5 with 5.1 is doing the same

skorzo said:
I think that your problem is not switching off the router. The problem is when your phone goes to suspension (screen off) and then it drops the wifi off.
My Nexus 5 with 5.1 is doing the same
Click to expand...
Click to collapse
I've got some similar behaviour here, both when updated from 5.0, and with a fresh install from the factory images. When I arrive at a place with known WiFi, the phone only connects once I turned on the screen. After that, it stays connected until I move out of range and back again.

It's probably a matter of responsiveness/battery life. The more it polls for networks, the more battery it uses. It should connect, even with the screen off, within a few minutes.
That being said, I have my wifi set to always stay connected, and I've seen it not connected when I turned the screen on, then connect a couple seconds later. So, there's that. Curious how often it does that.

Aerowinder said:
It's probably a matter of responsiveness/battery life. The more it polls for networks, the more battery it uses. It should connect, even with the screen off, within a few minutes.
Click to expand...
Click to collapse
That's what I suspected. Sometimes, the waiting game works, but I've had my N5 lying on my desk – where it usually gets full WiFi bars – for about 40 minutes the other day, still it did not connect until I turned the screen on.
Edit: Just now, my phone disconnected from WiFi when the screen turned off, which leads me to believe that this is all caused by the WiFi sleep policy. Could it be that Google messed up something there?

dadrc said:
That's what I suspected. Sometimes, the waiting game works, but I've had my N5 lying on my desk – where it usually gets full WiFi bars – for about 40 minutes the other day, still it did not connect until I turned the screen on.
Edit: Just now, my phone disconnected from WiFi when the screen turned off, which leads me to believe that this is all caused by the WiFi sleep policy. Could it be that Google messed up something there?
Click to expand...
Click to collapse
My "research" has led me to believe this is the case.

Anything in terms of a workaround?
I came across those settings in the developer options (see screenshot), especially the "Always allow WiFi Roam Scans" looked promising. Been playing with them, but so far no luck.

Hi All,
exactly the same issues as yours guys are happening since I received the OTA 5.1 and installed it !
I Guess something messed up with this new update in regard of the wifi... as you mentioned.
If you come across a workaround or a confirmation from "Google" please share.
Cheers,
(With almost everyone nowadays having data ..it is difficult to notice such a behavior due to the fast wifi/data switching)

I have seen this happen as well. My battery graph will even show a missing area for WiFi indicating it turned itself on and off twice within a few hours and then stayed on after that.

Google just now released LMY47I, has anyone had a chance to see if that version fixes our problem? Once I'm off work (in about 8 hours), I'll give it a whirl and report back.

Tasker will help you

OsBuilder said:
Tasker will help you
Click to expand...
Click to collapse
Could you please elaborate on that? I'm familiar with Tasker, but I can't think of a way of dealing with this, since I'm not sure what actually happens with the WiFi. The settings appear untouched.

dadrc said:
Could you please elaborate on that? I'm familiar with Tasker, but I can't think of a way of dealing with this, since I'm not sure what actually happens with the WiFi. The settings appear untouched.
Click to expand...
Click to collapse
I'm sorry, but my phone is now in the service center , and press that I do not remember specifically . The idea is that when you disable wifi, a time interval is forced to connect to a particular network . Look presence on the internet , here is full of instructions.

dadrc said:
Google just now released LMY47I, has anyone had a chance to see if that version fixes our problem? Once I'm off work (in about 8 hours), I'll give it a whirl and report back.
Click to expand...
Click to collapse
http://www.androidpolice.com/android_aosp_changelogs/android-5.1.0_r1-to-android-5.1.0_r3-AOSP-changelog.html
Almost all of the changes on these different builds are SIM related for specific carriers.
LMY47I was only released to LGD821 devices with SIM cards from Indian and Australian carriers

Same problem here. I am slowly losing faith in Google. Get the frickin basics going guys!!!
Back to my 5.0.1 build.

I've gone back to 5.0.1, too. Pity, except for this I was pretty happy with 5.1. Maybe 5.1.1 will actually be usable.

Do you think it can be related to Issue 163350? code.google.com/p/android/issues/detail?id=163350
I have just reported that, but I'm still trying to understand if it just happens to me or what.

fabiastik said:
Do you think it can be related to Issue 163350? code.google.com/p/android/issues/detail?id=163350
I have just reported that, but I'm still trying to understand if it just happens to me or what.
Click to expand...
Click to collapse
I think the solution is "use vibrate mode on". Get your device to vibrate mod and test it.
I am waiting for your feedback.

MindLeader said:
I think the solution is "use vibrate mode on". Get your device to vibrate mod and test it.
I am waiting for your feedback.
Click to expand...
Click to collapse
This trick didn't work.

I have this proble too

WiFi is turned off yet is reported as turned on and using battery.

My wifi has been off since i upgraded to M, clean install from the Google images. It still reports my wifi as on and using up my battery....is this a bug or am i reading this incorrectly?
http://imgur.com/a/ow5fj

I don't know if this is a setting in marshmallow, but I know in KitKat if you go into the advanced settings menu on the wifi page there is an option that allows the phone to automatically turn on and scan for networks without any user intervention. That setting should be turned off.

reinert012 said:
My wifi has been off since i upgraded to M, clean install from the Google images. It still reports my wifi as on and using up my battery....is this a bug or am i reading this incorrectly?
http://imgur.com/a/ow5fj
Click to expand...
Click to collapse
You're not alone I'm using mine, but WiFi wasn't on top of the list ever in 5.1.1. Has to be a bug

Ive got this issue as well. Its really annoying. I always keep Wifi off to extend battery life but with M I might as well just keep it on...

goldswimmerb said:
Ive got this issue as well. Its really annoying. I always keep Wifi off to extend battery life but with M I might as well just keep it on...
Click to expand...
Click to collapse
Ugh, this is not good.

CalculatedRisk said:
I don't know if this is a setting in marshmallow, but I know in KitKat if you go into the advanced settings menu on the wifi page there is an option that allows the phone to automatically turn on and scan for networks without any user intervention. That setting should be turned off.
Click to expand...
Click to collapse
huh...mine is set to Always keep wifi on during sleep. Does that matter even if wifi is off?

Since I'm still running kitkat i can't speak for marshmallow, but on KitKat, the wifi on/off toggle takes priority over that setting. Wifi will only stay on during sleep if it was turned on to begin with, but that isn't the issue you guys are experiencing right? There might be an option in that same menu that says something like "let Android search for networks even if wifi turned off". That gives the results you guys are experiencing.

Go to settings-->location-->menu-->scanning and check if WiFi and Bluetooth scanning options are kept on..
I don't have this issue..
Sent from my Nexus 5 using XDA Free mobile app

vipinbp said:
Go to settings-->location-->menu-->scanning and check if WiFi and Bluetooth scanning options are kept on..
I don't have this issue..
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Both are checked, i unchecked them both. What were the status of yours?

When I flashed the Factory Image (6.0) I had this problem. I flashed back to 5.1.1 booted the phone. Then booted into recovery and sideloaded the OTA update to 6.0 booted the phone and preformed a factory reset. I do not have this problem anymore. Wifi doesn't even show up in the battery stats.

jdawg0024 said:
When I flashed the Factory Image (6.0) I had this problem. I flashed back to 5.1.1 booted the phone. Then booted into recovery and sideloaded the OTA update to 6.0 booted the phone and preformed a factory reset. I do not have this problem anymore. Wifi doesn't even show up in the battery stats.
Click to expand...
Click to collapse
Edit Pics

reinert012 said:
Both are checked, i unchecked them both. What were the status of yours?
Click to expand...
Click to collapse
During initial setup Google asked me if I wanted to keep WiFi scanning enabled to help apps with location to find the location easily.. I declined.. Hence they were off..
Did it help with the battery?
Sent from my Nexus 5 using XDA Free mobile app

Just an update on battery life. 1.5h SOT no WiFi bug (after sideloading the OTA update) also noticed the battery graph added Camera and Flashlight if they were used

Also discussing the same issue here:
http://forum.xda-developers.com/google-nexus-5/help/wifi-plaguing-android-marshmallow-t3220031
Try to set it 2.4 Ghz only instead of auto (2.4 +5)