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[BUG] Possible charging bug from computer USB port

Hi
I'm not sure if this is related to just my particular computer or a general charging bug. Several times I've plugged the Nexus 4 into my computer USB port to charge overnight (okay it's slower by USB but overnight it doesn't matter and convenient to use the computer USB port) only to find it hasn't charge but continued to discharged.
My computer USB ports are powered while the computer is in Sleep mode (suspend to RAM) and I've charged many gadgets over night with no problem, including the Nexus 7.
To replicate the bug:
1) Computer is on, plug the Nexus 4 in to charge, Nexus confirms it is charging by icon in notification tray and it will start to charge
2) Computer goes to sleep, Nexus 4 still shows it is charging, however at this point it is no longer charging, and actually starts to discharge quicker than normal.
3) While computer is still in sleep mode, unplug the USB cable from the Nexus, plug it back in, phone now starts to charge normally.
There seems to be a bug when the computer sleeps and disconnects the USB data part of the connection, the Nexus gets a bit confused and stops charging even though it still indicates it is charging. I suspect the faster discharge I've seen is because the Nexus 4 thinks it is powered and doesn't deep sleep as it would on only battery power.
An HTC One X, a Nexus 7, an MP3 player and numerous other gadgets have all continued to charge normally after point 2.
Thought it worth pointing out in case others have similar issues and wonder why the phone isn't charging.
Regards
Phil

Noticed the same just a day ago, went to take my phone off charging from my laptop and was very surprise/d/ that i had lost 2-3%
Sent from Nexus 4 - cm10 - faux kernel beta001

Same here with Mac. Once goes to sleep it drains phone even though icon shows its charging.

I've noticed this too. The Nexus 4 is my only device that won't charge from my PC while it's sleeping.

Edit: Actually I need to use the PC, so this isn't going to work

Had this happen too. Is there a fix? or is it just like that

Thanks for this. I wandered why my phone was 0% one night I had it on the charger all night.

Mine shows the charging symbol on the statusbar, but at the battery screen in settings it shows it isn't charging,
Screenshot included.
Screenshot was taken when my laptop was in sleep mode with my nexus 4 connected over usb.

Had the same thing happen to me.

Well, after JB update 4.1.2, the same happens with my GNex. So it must be OS related.
Sent from my Galaxy Nexus using xda app-developers app

This is super annoying as that's how I've charged my phones for years. Now I have to put the stock wall wart somewhere and have an extra long USB cable to reach my desk. Sometimes I forget about this bug when developing stuff and it says "charging" so I wake up with a dead phone

I'd noticed this issue when charging with a battery pack, though I haven't tried it from my computer USB port yet. One thing - if the phone charge is above 50% it seems to be fine, it's only when it's below 50% that it doesn't recharge from the battery pack. Has anyone noticed something similar when charging from a computer USB - does it work if the phone battery is over 50%?

Same here--my Nexus 4 doesn't charge by a sleeping computer. Every other phone worked fine (though I had to connect my iPhones before the computer was asleep for them to continue charging after it was put to sleep). I've tried this when my Nexus was over 50% and with two different cables. It also worked with my Galaxy Nexus from OS 4.1 to 4.2.

I have the same thing when I try to charge it over a powered USB hub (you definitly get 5V from it) while the PC is turned off... It shows that it is charging but it is not.. really annyoing especially when you use it as your alarm in the morning (don't ask, that is how I noticed it the first time ). Never had a problem when the PC is turned on though...

something like this happens to me but charging with AC adapter...it would say connected to AC then after awhile when i wake the phone up, it would say charging with USB but it is connected to AC adapter...to get back to charging as connected to AC, i would have to unplug and replug...weird

Try different USB Ports and other USB cable.
I have a notebook which has on the left side 2 USB ports and on the right side 1 USB port.
The mobile doesn't charge with original USB cable on any of these USB ports.
But if I use a standard USB Cable and plug it into the USB port on the right side, mobile gets charged over night.
However, when plugging in any of the USB ports on the left side, it won't get charged.
(Left side is sharing the 500mA, right side won't)
And yes, my computer is put to sleep, just keep the USB ports alive

Yup is also happens to me. I think it is a bug, might as well use the mains as it works better and it charges very quickly.
4.2.1 has a lot of bugs that needs to be sorted out in my opinion, and this is one of them.
Sent from my Nexus 10 using xda app-developers app

It's a bug with the Nexus 4. I have tried the same USB port with a:
1. Nexus 7
2. Galaxy Nexus
3. Galaxy Note
4. Motorola Charm
All except the Nexus 4 work fine charging when computer is in sleep.

Hi
Fingers crossed this is fixed in the next OTA happening shortly. In the change log we have this:
5194a3d power: charger: need sometime to handle the usb disconnecting events
Fixes listed here
A computer going to sleep would cause the data part of the USB connection to disconnect, if this event is now handled correctly by the charging system perhaps it will continue to charge normally after the computer has slept. Like I say, fingers crossed but looks hopeful.
Regards
Phil

A work around that most of you probably know is that as soon as your computer has been put to sleep, unplug the cable and replug it again. The phone will start charging again.
Sent from my Nexus 10 using xda app-developers app

Turbo Charger

Hello,
I seem to have lost the ability to turbo charge on my N6. When I use the turbo charger, the phone charges normally, but does not "turbo" charge. I've also lost the ability to connect to a PC. No machine will recognize my device, so I'm also wondering how to update to 5.1 once released without a PC.
Not sure if these issues are related. Maybe a hardware issue? I'm on a stock, rooted device (with forced encryption off) with TWRP recovery. The problems seem to have started after I manually updated to 5.0.1 using this method:
http://nexus5.wonderhowto.com/how-t...ncryption-when-updating-your-nexus-6-0159062/
Please let me know if anyone can help.
Thanks

there's no real "turbo" mode in the n6, if its charging normally, then its right. how long would you say it takes the device to charge? and about connecting to the pc, is your nexus driver installed? sounds like it had an error somewhere. try installing it again, or manually. if the n6 driver isnt installed, your pc will never see the n6.

I noticed, I used a longer cord plugged into the Turbo charger, it would take about 5-6 hours to charge (I forget the %). Then I switched the cord back to the one that came with it, and the time was cut in half, 2-3 hours. Make sure you are using the correct cord.
Sent from my Nexus 6 using Tapatalk

simms22 said:
there's no real "turbo" mode in the n6, if its charging normally, then its right. how long would you say it takes the device to charge? and about connecting to the pc, is your nexus driver installed? sounds like it had an error somewhere. try installing it again, or manually. if the n6 driver isnt installed, your pc will never see the n6.
Click to expand...
Click to collapse
It takes about 5-6 hours to charge from 0%. And yes, I have tried deleting the drivers and reinstalling them automatically and manually. It's not a driver problem as I've tried multiple computers (both PC and MAC). I've used multiple USB ports and cables. I've tried literally everything.
Casper34 said:
I noticed, I used a longer cord plugged into the Turbo charger, it would take about 5-6 hours to charge (I forget the %). Then I switched the cord back to the one that came with it, and the time was cut in half, 2-3 hours. Make sure you are using the correct cord.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Thanks. I'm using the correct charger and cable. In fact, I thought I had a defective charger so I had Motorola send me a brand new one. Still not working correctly. In fact, when I enable USB debugging and MTP connection, it won't charge at all using the turbo charger. I have to disable USB debugging and MTP to get it to work. Very strange. That's why I think something went wrong with my installation of 5.0.1 or one of my modifications (enabling landscape mode on home screen, enabling screen mirroring, enabling tethering, franco kernel, root, decryption, etc.). I'm really hoping it's not hardware.

If it takes that long to charge on a wallplug you're hardware is probably defective. It generally takes me 3 hours to charge from 0 to 100 with a 5v 1amp wall charger. A little less with a 5v 2amp port. About 2 hours in fact.
5 to 6 hour charge rates only make sense if you're charging off the a powered USB port from a computer.

ryan4a said:
Hello,
I seem to have lost the ability to turbo charge on my N6. When I use the turbo charger, the phone charges normally, but does not "turbo" charge. I've also lost the ability to connect to a PC. No machine will recognize my device, so I'm also wondering how to update to 5.1 once released without a PC.
Not sure if these issues are related. Maybe a hardware issue? I'm on a stock, rooted device (with forced encryption off) with TWRP recovery. The problems seem to have started after I manually updated to 5.0.1 using this method:
http://nexus5.wonderhowto.com/how-t...ncryption-when-updating-your-nexus-6-0159062/
Please let me know if anyone can help.
Thanks
Click to expand...
Click to collapse
Either it's charger's issue or it's charging IC's issue. If you can find another turbo charger, try charging with that. If the same issue repeat, then ask for a replacement

SAW_JOK3R said:
Either it's charger's issue or it's charging IC's issue. If you can find another turbo charger, try charging with that. If the same issue repeat, then ask for a replacement
Click to expand...
Click to collapse
Good luck getting a replacement charger. I have been trying to get a replacement charger for two weeks. Moto customer service is terrible.
Sent from my Nexus 6 using XDA Premium HD app

Hey all, I find my nexus with the turbo charger goes from empty to full in about an hour and ten maybe twenty. Today I plugged it in at 13% at noon and by one it was at 94% so some of the charge times I'm seeing here seem way long compared to what I've been getting on my device. Is there different turbo charge blocks out there!?

BxingFetus said:
Hey all, I find my nexus with the turbo charger goes from empty to full in about an hour and ten maybe twenty. Today I plugged it in at 13% at noon and by one it was at 94% so some of the charge times I'm seeing here seem way long compared to what I've been getting on my device. Is there different turbo charge blocks out there!?
Click to expand...
Click to collapse
Your's appears to be working fine. OP's isnt.

Dang mine gets from zero to 100 in 1.5hr
Sent from my Nexus 6 using XDA Free mobile app

Must be my Canadian electricity.

If by any chance you have access to the Note 4's charging block, try that one. It works extremely well with every turbo charge device I've used.

Charging Issue: Charging Slowly from USB, Charging Normal from Wireless Qi

Hi everyone, so my issue I currently have with my Nexus 6 is as follows:
Device Details: Nexus 6, rooted, running CM13, Xposed Framework installed
Charging from USB: shows "charging slowly" message on lockscreen. Ampere shows an average of about 200mA, regardless of type of charger. Tried several QuickCharger adapters and a regular adapter, as well as several different cables to the same result. When connecting to a PC via USB, it shows the same charging power, however my laptop is not recognizing that the device has been plugged in.
Charging Wirelessly: charges normal as it always had, showing a average of about 500-700mA.
The issue occurred suddenly while I was out hiking and attempting to charge via a QuickCharge capable portable battery. The previous day it was charging as it always has.
All signs point to a damaged micro USB port on my Nexus 6, but wondering if there could be any other possible causes. I'm hesitant to try a factory reset to troubleshoot it as a software issue since I have no way of connecting it to my PC to re-root and re-flash CM if that doesn't fix the issue.
If it is the micro USB port as I think, any suggestions on how to remedy this? I'm used to using my device heavily everyday and charging it with a QuickCharger as needed, so this slow charging is a significant issue right now.
Thanks for any help!

your phone charges at differing speeds at differing parts of its charging cycle. and on top of that, charging via usb instead of wall charger will carge your phone at a much slower rate. that said, we also have a "usb fastcharge" option included in many kernels/custom roms. but you also have to know that fastcharge doesnt work with every usb port that you can plug into. it only will work with certain usb ports.

simms22 said:
your phone charges at differing speeds at differing parts of its charging cycle. and on top of that, charging via usb instead of wall charger will carge your phone at a much slower rate. that said, we also have a "usb fastcharge" option included in many kernels/custom roms. but you also have to know that fastcharge doesnt work with every usb port that you can plug into. it only will work with certain usb ports.
Click to expand...
Click to collapse
Sorry, I should have been more clear. When I said "Charging via USB" I just mean through the phone's microUSB port. Regardless of whether it was plugged into a wall charger(with or without QuickCharge 2.0) or my laptop or a portable battery, or a QuickCharge car charger, I was getting the same charge rate and message showing "charging slowly", much slower than wireless charge rate which showed the normal "charging" message. The Qualcomm QuickCharge 2.0 using the provided Motorola Supercharger or my QuickCharge 2.0 capable portable battery has always worked great prior to this issue.

mrkb510 said:
Sorry, I should have been more clear. When I said "Charging via USB" I just mean through the phone's microUSB port. Regardless of whether it was plugged into a wall charger(with or without QuickCharge 2.0) or my laptop or a portable battery, or a QuickCharge car charger, I was getting the same charge rate and message showing "charging slowly", much slower than wireless charge rate which showed the normal "charging" message. The Qualcomm QuickCharge 2.0 using the provided Motorola Supercharger or my QuickCharge 2.0 capable portable battery has always worked great prior to this issue.
Click to expand...
Click to collapse
ok, because the included "fastcharge" is only for usb charging. but regular charging still depends on where in the charging cycle you were. for example, at 92 itll charge at a much slower rate than at 50. what battery percent where you at when you noticed?

simms22 said:
ok, because the included "fastcharge" is only for usb charging. but regular charging still depends on where in the charging cycle you were. for example, at 92 itll charge at a much slower rate than at 50. what battery percent where you at when you noticed?
Click to expand...
Click to collapse
Initially very low, under 15%. Was attempting to charge with a QC2.0 portable battery, but the device was draining quicker than it was charging. When I got home, I attempted the Motorola "Turbocharger" wall charger and got the same rate. So I put it on the wireless charger, and as it charged, I kept testing the wall charger every 20% or so, getting the same slow charge rate.
The bottom line is really that the Wireless Qi charging is functioning properly as it always has, but any "plugged-in" type charging is charging at an extremely slow rate, no matter what type of charger, no matter what % the battery is at.

mrkb510 said:
Initially very low, under 15%. Was attempting to charge with a QC2.0 portable battery, but the device was draining quicker than it was charging. When I got home, I attempted the Motorola "Turbocharger" wall charger and got the same rate. So I put it on the wireless charger, and as it charged, I kept testing the wall charger every 20% or so, getting the same slow charge rate.
Click to expand...
Click to collapse
odd! it could be a software issue or just a derp. have you tried rebooting? im one of the few that i know with a broken usb on my n6. and it charges slower. it used to charge at about 2400mV, now it charges at 800mV max. now that its completely broken, i cant charge it via a usb anymore, now i charge it wirelessly, which is at about 800mV max as well. anyways, try a reboot, or reflashing your software first, before doing anything extreme.

simms22 said:
odd! it could be a software issue or just a derp. have you tried rebooting? im one of the few that i know with a broken usb on my n6. and it charges slower. it used to charge at about 2400mV, now it charges at 800mV max. now that its completely broken, i cant charge it via a usb anymore, now i charge it wirelessly, which is at about 800mV max as well. anyways, try a reboot, or reflashing your software first, before doing anything extreme.
Click to expand...
Click to collapse
Yea I've tried rebooting like 20 times lol. Also tried doing a CM nightly software update. I'll see if reflashing will do the trick. Any suggestion on reflashing from the device? I've always used Nexus Root Toolkit and did it from my PC.
If that doesn't work, guess I'm stuck with wireless charging too. Thanks for your help!

mrkb510 said:
Yea I've tried rebooting like 20 times lol. Also tried doing a CM nightly software update. I'll see if reflashing will do the trick. Any suggestion on reflashing from the device? I've always used Nexus Root Toolkit and did it from my PC.
If that doesn't work, guess I'm stuck with wireless charging too. Thanks for your help!
Click to expand...
Click to collapse
you can flash cm via twrp recovery on your phone, without a computer. oh, and my work buddies are still in shock that my n6 wirelessly charges.. they both have iphone 6s

Android 7.1.1 update : Super slow charging

I updated my phone through OTA, but once i rebooted it aftet installing update, my USB port started to act strange. The phone takes 6 hours to fully charged ( with the same original power brick and cable) and also the cannot be recognized by any computer. OTG flash drives don't work anymore too.
Anyone else experienced these symptoms?

Daruosh said:
I updated my phone through OTA, but once i rebooted it aftet installing update, my USB port started to act strange. The phone takes 6 hours to fully charged ( with the same original power brick and cable) and also the cannot be recognized by any computer. OTG flash drives don't work anymore too.
Anyone else experienced these symptoms?
Click to expand...
Click to collapse
Bad wire...
You've lost a couple of pins... So you're not getting the turbo charger handshake... Further confirmed by loss of data to your PC...
Get a new wire... Make sure it specifies DATA/SYNC...
Unless you've burned up your turbo charger... Which I have heard of yet... Though I've broken the board in a couple of QC 2.0 compatible wall warts... But they just stop charging all together
Sent from my Nexus 6 using Tapatalk

Hey, I have the same problem but I bought and changed the cable USB so I solved the "problem".
This is weird but seriously I noticed this problem, Really I don't know.

Nexus 6 USB/charging port are this phones Achilles heel

I have recently resurrected my nexus 6 and found that it no longer gives me the turbo charger notification.
Sent from my Nexus 6 using Tapatalk

Fast charging notifications are ROM dependant. AFAIK, still not part of the stock ROM.
A way to tell what's happening is to use Ampere and look for ~ 1900 - 2200mA of current on the quick charger. ~ 500mA on a regular wall charger and <200mA on usb (computer) port.
The phone will only fast charge below a preset level. Somewhere around 80% the fast charge starts to slow down and that is reflected in the current measurement. By 85%, my N6 drops to ~1600mA.
If you go to settings -> battery while plugged into a wall (AC) charger and it shows usb charging, then check the cable and charger. Try different ones. If still it shows usb charging, then your phone charging port is messed up. I'd first try cleaning it.
If you can't remember the last time you cleared the caches (clean flashed) a factory reset might get things cleaned up as well.
If you're still using the original battery at this point in time, slow charging might just be a result of an old, expended battery.

AA usb and charging

I am having an issue using AA with a pixel 6 I bought recently. I asked on the pixel 6 forum and no one had an answer. I am finding that while I am plugged in and AA is running, the phone does not charge, it drains as if it is not plugged in. I am using the same cables in the same car that I have used at least 6 other phones.
With other phones even if the phone was not fully charged and even when I was using maps on a longer trip, the phone would be fully charged by the time I got out of the car. The phone draining instead is a major inconvenience.
does anyone have any ideas?

Use an app to check how many Amps you get out of your USB port. Perhaps the phone is very sensitive concerning the USB cable. I had s similar issue with a USB cable on my old phone. It only charged at 500mA. Then you can try another USB cable.
AA needs a lot of battery. Therefore I guess there is not enough power coming out of the USB port to charge the phone during the use of AA.