Develop Bugs

Why does GPS have to reacquire when switching from one GPS app to another?

Jellybean 4.1.1 & 4.1.2 CM ROM
With GPS turned on, switching from one GPS app to another it takes about 20 seconds for the app to relocate itsself. The GPS has to go thru the entire reacquire sequence.
It seems GPS (even if its turned on in settings) really only gets turned on and off when an app requests it forcing it to reacquire.
IMO the GPS should be turned on all the time if its ON in the settings.
Whats the point of the on switch if its not really on? If thats the case eliminate it. The app can handle GPS location ON OFF

Hemidroids said:
IMO the GPS should be turned on all the time if its ON in the settings.
Whats the point of the on switch if its not really on?
Click to expand...
Click to collapse
That's crazy talk, do you have any idea what leaving GPS on all the time would do to battery life?

pfmiller said:
That's crazy talk, do you have any idea what leaving GPS on all the time would do to battery life?
Click to expand...
Click to collapse
I leave mine on all the time. Of course I know which apps use it and I set them up accordingly

adrynalyne said:
I leave mine on all the time. Of course I know which apps use it and I set them up accordingly
Click to expand...
Click to collapse
No, you have it enabled all the time. I do too, but it's only on when your apps are using it. You seem to understand that, but that's not what the OP is talking about.

pfmiller said:
No, you have it enabled all the time. I do too, but it's only on when your apps are using it. You seem to understand that, but that's not what the OP is talking about.
Click to expand...
Click to collapse
You say potato...
You knew what I meant

I agree. I don't like that when you find a place in Google Maps and then Navigate to it, the GPS has to reacquire. There should just be a 10-20 second delay between closing a GPS app and the GPS actually turning off. Something like that.

clobber said:
I agree. I don't like that when you find a place in Google Maps and then Navigate to it, the GPS has to reacquire. There should just be a 10-20 second delay between closing a GPS app and the GPS actually turning off. Something like that.
Click to expand...
Click to collapse
Doesn't even need to keep it on. If it knows the last good fix was only 5 seconds old then it should use that as a pretty good start for your current location.

Completely agree open up maps, to look for something forgot the name go to google now... and waiting... just leave it on for 10 damn seconds i can live with 10 minutes less battery life

pfmiller said:
That's crazy talk, do you have any idea what leaving GPS on all the time would do to battery life?
Click to expand...
Click to collapse
Hemidroids said:
The app can handle GPS location ON OFF
Click to expand...
Click to collapse

Actually in the previous version of Maps I was pleasantly surprised to notice that the hand-off from maps to navigation did not release the GPS lock.
I am not sure if they changed it back but my point being - hand-off from app to app can clearly be done more intelligently but again in the case of Maps we know that Navigation and Maps are the same app essentially so may be it was easier to do it.

The app already does handle turning GPS location on and off, that's not what the GPS permission toggle is for.

[SOLVED] Wi-Fi won't turn off in sleep [post-JB update]: how to diagnose?

SOLVED: See this follow-up post; it's one of those 7 things!
Hi! After updating to LK3 (the stock 4.1.1 JB update), my Wi-Fi stays on even after I put the phone to sleep (contrary to the setting "Keep Wi-Fi on during sleep: never (increases data usage)." See attached pics.
I have disabled thus far:
1) Google Now
2) Location Services "Use wireless networks" and "Location and Google search"
3) Location reporting: now set to "Location manually selected on the map"
4) Latitude location sharing
5) Location history
6) Automatic check-ins
7) Check-in notifications
Basically, everything I could find related to location. But, alas, that battery screenshot is after I changed all of those! Wi-Fi isn't on constantly, but it stays on way longer than just when I have the screen on.
What are my options here? How should I diagnose this sucker? I ran BetterBatteryStats, but they said it looked fine with my log (some apps, through the ambiguous "Alarms" partial wakelock, were the largest cause, but only accounted for 3.6% of the time).
I'm pretty sure this is a post-update problem, as before, whenever I unlocked my phone, I got the little notification, "Connected to #SSIDName#" and the Wi-Fi icon would obviously, then, be off for the first few seconds (and when I opened my browser too quickly, I'd get a "Page cannot be displayed" error).
Thanks in advance, I'll take any ideas/thoughts/help/sympathy/antipathy you can offer,

Same problem here. Before the update, it was doubletwist air sync forcing wifi on at all times. That's disabled now, so I have not clue. Hopefully somebody figures it out. Mine isn't even intermittent, it's always on, and I have the same setting as you.

So, I left my phone alone for the night and these programs used Wi-Fi while the screen was off:
Do you have any of the same apps? I'm going to uninstall Google+, Facebook, and GroupMe today and run this again tomorrow. But, looking at pure download amount, it's something on the OS....
If you're interested in doing the same, the app is My Data Manager ( https://play.google.com/store/apps/...e&utm_medium=organic&utm_term=my+data+manager).
Basically, install the app, but do not open it. When you're ready for bed (or any extended period of not using it), open it, and then minimize it (runs in the background). Hit your sleep button immediately (we don't want to capture anything of the phone when the screen is on). Then, when you wake up/need to use it, wake it up, immediately disable Wi-Fi (again, no artifacts from when the phone was awake), take a look at My Data Apps (2nd page), Wi-Fi.
I'll let you know how my second attempt goes.

The only one I have is Facebook, but yeah it definitely looks like the os.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Well! Maybe I should have given it a little while longer, as it seems to be quite a bit better!
It still stays on longer than the screen, but now at least it shuts off once in a while, haha. It was either uninstalling Facebook, gMail, or GroupMe OR disabling one of those earlier settings...it's still not totally fixed, though. I found the Network Counter app which seems to be a little more specific, so we'll see how it goes tonight,
~Ibrahim~

Hmm this is what mine looks like from today. Wifi didn't go off until I did it manually.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

Have you disabled the location stuff? Those are what really helped me. I'm off to run the overnight test, with the new app!

i am having the same issues. my wifi since the jelly bean update has been always on.... the wifi bar in battery settings is solid and has never been off.... so frustrating.

Try "Green Power" app.
I use it to disable both wifi and data 20secs after screen off.
There is a Whitelist and a minimum threshold trigger too.
It works PERFECT in ICS.
At bedtime, I get .5% hr battery drain or better.

themadproducer said:
Try "Green Power" app.
I use it to disable both wifi and data 20secs after screen off.
There is a Whitelist and a minimum threshold trigger too.
It works PERFECT in ICS.
At bedtime, I get no less than .5% hr battery drain.
Click to expand...
Click to collapse
Awesome, thanks for the info! Exactly, I don't mind Google Now using the Wi-Fi, but then that opens the door for everything to use the Wi-Fi which will kill the battery when I get back to work.
Network Manager didn't work for some reason, so I tried Data Detective, but the stupid app consumed 90% of the Wi-Fi last night!
The only thing I've heard against battery savers is that they force apps to not use the data, and then they keep asking (creating overhead). I wouldn't have believed it out right except it came from the developer of BetterBatteryStats. But your battery loss isn't bad at all (overnight I average 0.4%/hour with the screen off).

ikjadoon said:
(overnight I average 0.4%/hour with the screen off).
Click to expand...
Click to collapse
I slightly edited my statement. I get .5% hr or better.
Curious...if you average .4%...
- what rom?
- and what is your lowest cpu freq?
- and is that with data and wifi off?

themadproducer said:
I slightly edited my statement. I get .5% hr or better.
Curious...if you average .4%...
- what rom?
- and what is your lowest cpu freq?
- and is that with data and wifi off?
Click to expand...
Click to collapse
Haha, right, I thought that's what you meant!
I'm on stock AT&T. Everything is stock; CPU Spy tells me 384Mhz. WiFi on, data off.

Why don't you guys disable it in settings? Open Wi-Fi in settings. Click menu button. Click advanced. Turn off Wi-Fi during sleep. Ta-da!
Sent from my SAMSUNG-SGH-I747 using xda premium

Ends said:
Why don't you guys disable it in settings? Open Wi-Fi in settings. Click menu button. Click advanced. Turn off Wi-Fi during sleep. Ta-da!
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
Yeah, that's an alternative...but if I have a setting that's supposed to turn it off when it goes to sleep, I'd like it to do that.

stbtigerr said:
Yeah, that's an alternative...but if I have a setting that's supposed to turn it off when it goes to sleep, I'd like it to do that.
Click to expand...
Click to collapse
That's right, well said....hence the opening post!

I have the same issue, wi-fi is always on unless I turn it off.

I'm happy. It's one of those location settings in the first post that caused the locks! Let me know if it works for you guys,

Phone awake always

Hi,
My phone is 'awake' always and the WiFi (in battery graph) shows as active even thoug WiFi is switched off.
http://imgur.com/ovnpKno
Any suggestions please

mtechie said:
Hi,
My phone is 'awake' always and the WiFi (in battery graph) shows as active even thoug WiFi is switched off.
http://imgur.com/ovnpKno
Any suggestions please
Click to expand...
Click to collapse
Assuming you are on 5.0.1 Lollipop, did you factory reset after the update? Many people have experienced problems after the update but have seen factory resets correct problems.
While on the wifi settings page (the screen where you find the list of wifi networks available), touch the three dots in the upper right corner and select Advanced.
Uncheck (turn off) the option to "Always allow scanning"
You can also turn off the first option of Network notification to stop it from trying to find open networks in range.
hope this helps.

jack man said:
Assuming you are on 5.0.1 Lollipop, did you factory reset after the update? Many people have experienced problems after the update but have seen factory resets correct problems.
While on the wifi settings page (the screen where you find the list of wifi networks available), touch the three dots in the upper right corner and select Advanced.
Uncheck (turn off) the option to "Always allow scanning"
You can also turn off the first option of Network notification to stop it from trying to find open networks in range.
hope this helps.
Click to expand...
Click to collapse
Thanks for the response,
I am on 5.0.1, I did factory reset twice, Cleaned cache multiple times
"Always allow scanning" is already turned off
Network notification is also turned off (unchecked)
Funny thing is , I put the phone in Airplane mode (wifi off too) for a while and battery graph still shows WiFi on and phone awake

mtechie said:
Thanks for the response,
I am on 5.0.1, I did factory reset twice, Cleaned cache multiple times
"Always allow scanning" is already turned off
Network notification is also turned off (unchecked)
Funny thing is , I put the phone in Airplane mode (wifi off too) for a while and battery graph still shows WiFi on and phone awake
Click to expand...
Click to collapse
The Wifi thing is a lollipop bug.
It'll always show as on even when it's off.

spexwood said:
The Wifi thing is a lollipop bug.
It'll always show as on even when it's off.
Click to expand...
Click to collapse
That bug must not hit every lollipop phone because my wifi doesn't show as on all the time. When it's off, it's off.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app

jack man said:
That bug must not hit every lollipop phone because my wifi doesn't show as on all the time. When it's off, it's off.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
Click to expand...
Click to collapse
Weird... mine does.
Are you running any special apps (like battery savers)? What Wifi settings are you using? Is Power Saving Mode on or off?
I'm curious now. But yeah, several Note 4 users on the non-ATT Note 4 thread are reporting this issue as well and so were many Nexus users.

spexwood said:
Weird... mine does.
Are you running any special apps (like battery savers)? What Wifi settings are you using? Is Power Saving Mode on or off?
I'm curious now. But yeah, several Note 4 users on the non-ATT Note 4 thread are reporting this issue as well and so were many Nexus users.
Click to expand...
Click to collapse
No battery savers or apps designed to conserve battery; power saving modes off. All I did to wifi settings was turn off scanning and notification. I have a long list of apps that I disabled since I knew for sure I wasn't going to use them. I screenshot them below if you're interested.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app

jack man said:
No battery savers or apps designed to conserve battery; power saving modes off. All I did to wifi settings was turn off scanning and notification. I have a long list of apps that I disabled since I knew for sure I wasn't going to use them. I screenshot them below if you're interested.
Sent from my SAMSUNG-SM-N910A using XDA Free mobile app
Click to expand...
Click to collapse
Ok I was wrong. My phone doesn't show wifi always on. I kept wifi off all day and it showed correctly. BUT I think it did show as always awake on the previous Lollipop update. (I'm on COC4 now).
And btw, I have all the same apps turned off as you except Samsung Push Service because it seems to not sync S Note with my Samsung account (I have a Note tablet too) and Amazon because I use it.

Update
I did some further digging , based on the amount of battery used.
1. Cerberus App was using a lot of battery, so uninstalled and re-installed it... the Constant AWAKE problem is gone
waiting a few days to make sure that problem was really gone
2. Uninstalled "LLAMA" app and now WiFi does NOT show as always on

Having the exact same issue on my galaxy s6. Just turned on clash after picking up the phone and the resolution looks like as compared to my joke Moto X (2013). It's worst when zoomed way out and fine when zoomed way in. Maggie everywhere. What the **** supercell.

WiFi always showing as on in battery history

In battery history my WiFi connection is always shown as on even when I turn it it off. I had it off last night but it still displays as on in the battery history. I also have battery scanning turned off. Does anyone else have a similar problem?

Go to Settings -> WiFi.
If WiFI is off, is there a Text that WiFI is being used for location services?

Haldi4803 said:
Go to Settings -> WiFi.
If WiFI is off, is there a Text that WiFI is being used for location services?
Click to expand...
Click to collapse
No. It says turn on WiFi to see available my networks.

jhadsfi said:
In battery history my WiFi connection is always shown as on even when I turn it it off. I had it off last night but it still displays as on in the battery history. I also have battery scanning turned off. Does anyone else have a similar problem?
Click to expand...
Click to collapse
I get the same thing when my Wi-Fi is off. I noticed it back when I had my M8, too. I think it's more of a bug than anything.
Sent from my HTC 10

Magnum_Enforcer said:
I get the same thing when my Wi-Fi is off. I noticed it back when I had my M8, too. I think it's more of a bug than anything.
Click to expand...
Click to collapse
Ah. I thought so too as battery isn't adversely affected. Thanks for helping.

jhadsfi said:
In battery history my WiFi connection is always shown as on even when I turn it it off. I had it off last night but it still displays as on in the battery history. I also have battery scanning turned off. Does anyone else have a similar problem?
Click to expand...
Click to collapse
That needs to be stopped..
See these three screenshots attached below:
Sent from quite brutal hTc 10 ..

jhadsfi said:
In battery history my WiFi connection is always shown as on even when I turn it it off. I had it off last night but it still displays as on in the battery history. I also have battery scanning turned off. Does anyone else have a similar problem?
Click to expand...
Click to collapse
You need to go into settings/location/options, scanning and turn off wifi scanning.

jauhien said:
That needs to be stopped..
See these three screenshots attached below:
Sent from quite brutal hTc 10 ..
Click to expand...
Click to collapse
Did all this. No dice.

yldlj said:
You need to go into settings/location/options, scanning and turn off wifi scanning.
Click to expand...
Click to collapse
Have it disabled. I mistakenly wrote battery scanning but that is what I meant.

No, it's not a Bug.
Are you on 1.91 ROM?
Mostly if it's shown as active, Wifi was active.
Seems like you have some other App Installed that forces WiFi active. Skype or such like to do that.

yldlj said:
You need to go into settings/location/options, scanning and turn off wifi scanning.
Click to expand...
Click to collapse
That did the trick.
Sent from my HTC 10

jhadsfi said:
Did all this. No dice.
Click to expand...
Click to collapse
Check Viber Settings.. it's there..
Sent from quite brutal hTc 10 ..

jauhien said:
Check Viber Settings.. it's there..
Sent from quite brutal hTc 10 ..
Click to expand...
Click to collapse
Thanks a lot man. This worked. You're awesome.

Battery drain with marshmallow

Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks

Appears to me that an app is running in the background that is stopping the phone from going into sleep mode.
Maybe install a logging app?

Dyno-droid said:
Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks
Click to expand...
Click to collapse
If u hve screen dimmer or screen filter uninstall it and than notice it .i had such issue .i uninstalled screen filter.
Sent from my GT-N7100 using Tapatalk

audit13 said:
Appears to me that an app is running in the background that is stopping the phone from going into sleep mode.
Maybe install a logging app?
Click to expand...
Click to collapse
It does this even before I install Gapps or any 3rd pay apps.
According to better battery stats, wlan_rx_ wake is causing a wake lock.
1life2love4 said:
If u hve screen dimmer or screen filter uninstall it and than notice it .i had such issue .i uninstalled screen filter.
Sorry, I'm not sure what you mean by a screen dimmer or filter? CSV you clarify?
Thanks for the replies
Sent from my GT-N7100 using Tapatalk
Click to expand...
Click to collapse

Old post about the nexus 5 but it may be of some use: http://forum.xda-developers.com/google-nexus-5/help/getting-rid-wlanrxwake-wakelocks-t2519294

Dyno-droid said:
Hi all. I have an sgh-i317m that I have tried a number of AOSP/CM13 ROMS. I get battery drain when connected to WiFi regardless of what ROM I try, with or without Gapps, location, or WiFi scanning,
I tried turning off wifi during sleep but the phone never gets to sleep.
Wondering if any one else has had this issue and solved it.
Thanks
Click to expand...
Click to collapse
Did you try your stock Rom? Just in case.
Sent from my Xiaomi Mi 5 using XDA Labs