Develop Bugs

VBUS TUNA OTG wakelock due to usb port problem and battery drain

I had the problem of ghost charging, it started with phone not charging when connected to charger and then randomly showing charging(even when not plugged in i.e. ghost charging) .
After seeing other thread, i cleaned the port with paper and tooth pick and also pushed the inner tongue slightly upwards and now it doesn't show charging icon, but it says not charging in settings>battery, instead of discharging
It causes vbus_tuna_otg wake lock in Bette battery stats and high system usage in setting> battery, basically not letting the phone go to deep sleep, causing battery drain.
Have tried multiple roms and stock, etc all give same behaviour so definately h/w problem and also have two batteries and both do the same thing.
Any way to fix this. ?
Any help appreciated.

hardikjakharia said:
I had the problem of ghost charging, it started with phone not charging when connected to charger and then randomly showing charging(even when not plugged in i.e. ghost charging) .
After seeing other thread, i cleaned the port with paper and tooth pick and also pushed the inner tongue slightly upwards and now it doesn't show charging icon, but it says not charging in settings>battery, instead of discharging
It causes vbus_tuna_otg wake lock in Bette battery stats and high system usage in setting> battery, basically not letting the phone go to deep sleep, causing battery drain.
Have tried multiple roms and stock, etc all give same behaviour so definately h/w problem and also have two batteries and both do the same thing.
Any way to fix this. ?
Any help appreciated.
Click to expand...
Click to collapse
Just have them send you a replacement, I was experiencing the same thing. I was back up and running in a half hour...
Sent from my Galaxy Nexus using Tapatalk 2

0dBu said:
Just have them send you a replacement, I was experiencing the same thing. I was back up and running in a half hour...
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
Hey,
i actually live in India, and had purchased this from US from Google directly, so i dont think samsung will be providing replacement, they give only limited warranty after 14 days..
Any idea on how to solve problem or atleast let device go to sleep..
- Hardik

hardikjakharia said:
Hey,
i actually live in India, and had purchased this from US from Google directly, so i dont think samsung will be providing replacement, they give only limited warranty after 14 days..
Any idea on how to solve problem or atleast let device go to sleep..
- Hardik
Click to expand...
Click to collapse
There's another thread in here somewhere where a guy replaced his USB port, you may look into that.
Sent from my Galaxy Nexus using Tapatalk 2

vbus-tuna_otg
Did you ever get it fixed, I also have the same problem I have been searching and searching and I can't find a solution. I have tried a new battery, resetting the phone to stock, cleaning the usb port, replacing the usb port, taking the phone apart and cleaning it, greenified a lot of apps and the phone still does it. I just ordered another usb port in case the first one I bought was defective. I have bbs and vbus-tuna_otg is the main kernel wakelock killing my battery. Hopefully someone can help us seeing as this is a Google flagship phone.
My phone is a Verizon 32GB Galaxy Nexus running CM 10.1.3

Have tried the same as you. Changed port and battery and problem still persists. It's probably a board thing and needs a board replacement. I ll just have to live with it. I have the GSM version. I wonder if there is any way of disabling the service /process that creates the wakelock...
Sent with my thumbs using Tapatalk 2

KostasR said:
Have tried the same as you. Changed port and battery and problem still persists. It's probably a board thing and needs a board replacement. I ll just have to live with it. I have the GSM version. I wonder if there is any way of disabling the service /process that creates the wakelock...
Sent with my thumbs using Tapatalk 2
Click to expand...
Click to collapse
Damn that really sucks. I just bought the phone and I never knew this problem existed. Google should fix this.

open-source software solution
hardikjakharia said:
It causes vbus_tuna_otg wake lock in Bette battery stats and high system usage in setting> battery, basically not letting the phone go to deep sleep, causing battery drain.
Have tried multiple roms and stock, etc all give same behaviour so definately h/w problem and also have two batteries and both do the same thing.
Any way to fix this. ?
Click to expand...
Click to collapse
Hi,
I have developed an open-souce (GPLv3) app that helps save battery when this happens.
http://forum.xda-developers.com/showthread.php?t=2484871
SnooZy Charger turns off the screen on these ghost connections, saving battery consumption by the display. It does not fix the charging issues, but it reduces the battery drain when this happens.
mudar
ps: sorry if this is considered as self promotion or xposting but this issue has been reported on multiple threads..

mudar1488 said:
Hi,
I have developed an open-souce (GPLv3) app that helps save battery when this happens.
http://forum.xda-developers.com/showthread.php?t=2484871
SnooZy Charger turns off the screen on these ghost connections, saving battery consumption by the display. It does not fix the charging issues, but it reduces the battery drain when this happens.
mudar
ps: sorry if this is considered as self promotion or xposting but this issue has been reported on multiple threads..
Click to expand...
Click to collapse
Hey thanks I'm going tobgive it a try. I'll leave feedback to see if I have any ideas for you. Thanks again.

[Q] Nexus 7 turns off

Hello Everyone,
I am a noob on XDA, Please correct me if i have posted in the wrong forum. I bought a new nexus 7 16gb, for some reason when the battery is around 25-30% the tablet turns off itself. Its not shutdown its like pulling the battery of a phone thats on. The only way to start it is by connecting the charger.
Has anyone else experienced this issue?
I am on the stock rom NOT rooted
Thanks

steve_togo said:
Hello Everyone,
I am a noob on XDA, Please correct me if i have posted in the wrong forum. I bought a new nexus 7 16gb, for some reason when the battery is around 25-30% the tablet turns off itself. Its not shutdown its like pulling the battery of a phone thats on. The only way to start it is by connecting the charger.
Has anyone else experienced this issue?
I am on the stock rom NOT rooted
Thanks
Click to expand...
Click to collapse
Have you charged the device to 100% yet? I would do that, leave it charging for an hour after it shows 100% then use it till it dies. Rinse and repeat.
Sent from my SCH-I535 using Tapatalk 4

highfigh said:
Have you charged the device to 100% yet? I would do that, leave it charging for an hour after it shows 100% then use it till it dies. Rinse and repeat.
Sent from my SCH-I535 using Tapatalk 4
Click to expand...
Click to collapse
Yes I have charged it 100% multiple times, The only difference is i use a sammy charger that outputs 0.7 amps once in a while. I dont suspect the charging thing to do this.

Are you getting normal use out of a charge? How much screen time in one charge?
Sent from my SCH-I535 using Tapatalk 4

steve_togo said:
Yes I have charged it 100% multiple times, The only difference is i use a sammy charger that outputs 0.7 amps once in a while. I dont suspect the charging thing to do this.
Click to expand...
Click to collapse
Like Highfigh suggested check how long you can run on a full charge. If you get some good hours in then maybe the battery % is not reporting back properly. A reset/restore could possible resolve that issue.

I believe I am getting pretty good charge. I will try once again, I was thinking this might be something with stock rom and hence I posted it online. Thanks every one for the help
Sent from my Nexus 7 using Tapatalk 2

and one more self-turning-off nexus 7 hd
steve_togo said:
I bought a new nexus 7 16gb, for some reason when the battery is around 25-30% the tablet turns off itself. Its not shutdown its like pulling the battery of a phone thats on. The only way to start it is by connecting the charger.
Has anyone else experienced this issue?
I am on the stock rom NOT rooted
Click to expand...
Click to collapse
exactly the same story here. in my case it's not so easy to turn it on. it would seem like the device is completely discharged, even if it just showed some 40 % battery left. i have to wait several hours to even try to bring it back to recovery mode. very long press does nothing. it happened couple of times already. very annoying with such seemingly superb tablet. i'm not living in the us of a, so no quick replacement for me

That's bad I can turn on mine in a few minutes. Again mine happens very rarely. I also get an excellent battery life. How long does yours go on a charge.
I would also like to know if there is any kind of Logs that we can look at. It's getting irritating, did you try rooting your device to see if that might fix the problem.
Sent from my Nexus 7 using Tapatalk 2

I got the same problem recently, I think it was after the last update on the firmware. Everytime the battery reach around 35% it just went off.

Problem. Fast reboot automatically.

You guys know more about android than me, that's why I came here
When I would be using my phone, it automatically, fast reboots.
Does it have to do with charging the phone at night? It charges fully in like 1 hour or less. I sleep for 8 hours. I keep it going for the next 7 hours, even if it is full. Am doing something wrong? Is this the problem? What is it's fix?
I am using GT-I9195. Rooted ROM, Everything on stock.
Regards.

Hello. I have a similar problem. It reboots every night when its connected to WiFi and charging. If I set it to flight-mode it doesn't occur. But since it is a phone I want to have connected
I hope someone knows more about this problem.
Skickat från min GT-I9195 via Tapatalk 2

I am not having the problem when I turned off NFC...

Are you using the original charger?
It should take more than an hour to charge from 0 percent. You may have a faulty battery as well

Yep I am using the original charger.. That is what Im thinking. I am afraid to buy one from eBay cause it maybe wont have NFC. Can you help me find one with NFC? Please ^. ^
Edit: I use ebay.co.uk
Sent from my GT-I9195

Buy from Samsung with the battery kit if you want a guaranteed compatible one the local Samsung service centre usually also sells the battery by itself as well

Whosat said:
Buy from Samsung with the battery kit if you want a guaranteed compatible one the local Samsung service centre usually also sells the battery by itself as well
Click to expand...
Click to collapse
Thanks for the suggestions
Sent from my GT-I9195

[Q] Xperia Ion never holds charge

Hello Friends,
I have a year Xperia Ion phone. Recently I have got a problem with the battery of this phone.
A week back the battery status was never going below 100% but will shut off after certain amount of usage. I did not bother as I was able to use the phone normally but only the battery status was a problem. However the problem got more serious. Here is what happened and what I tried:
- A day back phone got switched off and the battery was never going above 1% upon restart, even when it was on charging
- I tried hard restart (holding volume up button + power button). After this it was showing increase in percentage when plugged in for charge and reached 100%. I thought the problem is resolved but not.
- Everytime I unplug phone from charging, battery drops down to 1% immediately and shuts off
- I did service test (by dialing some long numbers) of the phone and it says battery is good and no need to replace it. I assumed there is not hardware issue.
- I had no otherway but to try out battery calibration after rooting- I rooted my device, used 'Battery calibration' app. Charged up till it says 100% and did the calibration. It showed calibration success. I unplugged it from the charger again just to find that the same issue again.
I really do not know what to try now. My phone is just out of warranty (I bought this in another country during a visit). I am ready take paid service if that would solve, but I really appreciate a promising solution or suggestion for this issue.
This phone means a lot for some reason. Thanks in advance for your helpful thoughts!
Note: I found a similar thread where they talked about replacing battery: http://forum.xda-developers.com/showthread.php?t=2450884 I am not sure if this is the same case as that of mine. If so how to replace the built-in battery for Ion.

have you try charging when the phone in power off state ???
Sent from my C6603 using XDA Premium 4 mobile app

MrGezz said:
have you try charging when the phone in power off state ???
Sent from my C6603 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Every time I plug it in charge only after it goes off and then I turn on. Do you suggest to charge it to 100% while the phone remains in off state?

manoj23.86 said:
Every time I plug it in charge only after it goes off and then I turn on. Do you suggest to charge it to 100% while the phone remains in off state?
Click to expand...
Click to collapse
yes , because once I have this kind of issues myself ..
Sent from my C6603 using XDA Premium 4 mobile app

Need help from A hardware expert with this charging/battery issue

Battery charges fine when done offline/ i.e plugging battery out and charging ...
but when i try to charge it online battery start acting out weird . phone restart as soon as i plug in and then battery level drops also it wont charge .. and eventually dies
any advice please

abhishek009 said:
Battery charges fine when done offline/ i.e plugging battery out and charging ...
but when i try to charge it online battery start acting out weird . phone restart as soon as i plug in and then battery level drops also it wont charge .. and eventually dies
any advice please
Click to expand...
Click to collapse
What do you mean plugging battery out??

plugging battery out by opening the back panel , and removing it from the board socket

abhishek009 said:
plugging battery out by opening the back panel , and removing it from the board socket
Click to expand...
Click to collapse
Are you using stock charger to charge online? there might be one more possibility that battery might not be pinned properly to the phone.

coolrevi said:
Are you using stock charger to charge online? there might be one more possibility that battery might not be pinned properly to the phone.
Click to expand...
Click to collapse
yes i am using stock charger , and i tried several times battery is pinned properly .. it all started because the computer guy made wrong usb connections on my computers motherboard .. i connected to transfer my photos and it suddenly died. on connecting to computer via usb it charges sometimes ..but then restarting it results in mega drop in battery level and then it wont charge.
Just wanted to know that if this is a hardware issue or a software issue. would flashing a ftf solve the issue ?

abhishek009 said:
yes i am using stock charger , and i tried several times battery is pinned properly .. it all started because the computer guy made wrong usb connections on my computers motherboard .. i connected to transfer my photos and it suddenly died. on connecting to computer via usb it charges sometimes ..but then restarting it results in mega drop in battery level and then it wont charge.
Just wanted to know that if this is a hardware issue or a software issue. would flashing a ftf solve the issue ?
Click to expand...
Click to collapse
K i personally think that there is a problem with the battery. once the battery is connected to wrong polarity it generally get ****ed up but i see that it charges properly with the battery charger. if the charge is retained normally there is definitely no problem in battery. It will be the PIN . But not harm in trying to reset through PCC or flashing FTF.

coolrevi said:
K i personally think that there is a problem with the battery. once the battery is connected to wrong polarity it generally get ****ed up but i see that it charges properly with the battery charger. if the charge is retained normally there is definitely no problem in battery. It will be the PIN . But not harm in trying to reset through PCC or flashing FTF.
Click to expand...
Click to collapse
ok i will check one thing tonight .. am gonna charge the battery and leave it over night .. if charge retains and acts normal i guess pin and everything else has to be fine .. then the only thing fishy would be when connecting a charger...

Does Kernel affects charging or mess it up ??

abhishek009 said:
Does Kernel affects charging or mess it up ??
Click to expand...
Click to collapse
Yea it does. Get back to stock charge your battery use the phone. if the battery drains normally. There is no problem with battery. The problem is with pin configuration of the phone.
Sent from my C6502 using XDA Free mobile app

coolrevi said:
Yea it does. Get back to stock charge your battery use the phone. if the battery drains normally. There is no problem with battery. The problem is with pin configuration of the phone.
Sent from my C6502 using XDA Free mobile app
Click to expand...
Click to collapse
am on stock and i charged it .. and battery seems to act a little funny with the drops ... restarting results in 2% loss and it went from 55% to 47% in few minutes on idle state ..
also the phone doesnt turn off .. it would just restart itself ....
so guys any help if it is the battery issue or something with software also should i try this
http://forum.xda-developers.com/xperia-zl/general/phone-starts-connected-to-charger-t2864009

i flashed a ftf in flashmode ... still battery would charge just 1% from its current level like it would go to 19% from 18% and stop there ...on connecting to usb or stock charger ...and battery level would drop crazy after that on restarting ..
also phone would be in turn off mode it would just restart ,,,
should i buy a new battery ??

abhishek009 said:
i flashed a ftf in flashmode ... still battery would charge just 1% from its current level like it would go to 19% from 18% and stop there ...on connecting to usb or stock charger ...and battery level would drop crazy after that on restarting ..
also phone would be in turn off mode it would just restart ,,,
should i buy a new battery ??
Click to expand...
Click to collapse
If you are under warranty its better to take it to service. If not change you battery and charger
Sent from my C6502 using XDA Free mobile app

coolrevi said:
If you are under warranty its better to take it to service. If not change you battery and charger
Sent from my C6502 using XDA Free mobile app
Click to expand...
Click to collapse
Not under warranty and i did went to sony service center they said we do not repair .. however sony could swap and i have to pay for a new phone and pay 80% of its cost :/
i ordered a new battery .. changing the charger is important as well ??

abhishek009 said:
Not under warranty and i did went to sony service center they said we do not repair .. however sony could swap and i have to pay for a new phone and pay 80% of its cost :/
i ordered a new battery .. changing the charger is important as well ??
Click to expand...
Click to collapse
I'm not sure its safer to check it with the new charger first in order to avoid Any problem. Other wise you can check the charger with some other phone
Sent from my C6502 using XDA Free mobile app

coolrevi said:
I'm not sure its safer to check it with the new charger first in order to avoid Any problem. Other wise you can check the charger with some other phone
Sent from my C6502 using XDA Free mobile app
Click to expand...
Click to collapse
can i use the same usb cable though .. i can use samsung tab charger or nokia .. but zl charger is 1500mah while samsung is 2000mah and nokia 500mah

abhishek009 said:
can i use the same usb cable though .. i can use samsung tab charger or nokia .. but zl charger is 1500mah while samsung is 2000mah and nokia 500mah
Click to expand...
Click to collapse
I'm using 2 amps charger with my zl I have not face any Problem you can go ahead
Sent from my C6502 using XDA Free mobile app