Strange charging issue? - Nexus 7 Q&A, Help & Troubleshooting

I am currently using CM10, Nov 24 Nightly, getting ready to do some more expiermenting with older nightlies and newer ones, as this problem just started.
I have a USB hub that has two charge ports that charge 1.5 amps all the time wether the PC is on or not. Just recently I noticed my Nexus 7 does not recognize these charge ports. If I plug it into any other USB port, and it connects as a media device it charges fine. It also charges fine from any regular charger (OEM or aftermarket). My Galaxy Nexus, and Fascinate both recognize the charge ports on the hub, so it's not the hub.
Since it's sort of an odd issue, I'm not really sure how to further test / diagonose this issue really, other than try other ROMs and see if it corrects itself?

Related

myTouch 3G (original) Interesting USB Brick

Long story short, I flashed to CM6 a while back when RC1 was released and was happily using it for a bit. I encountered a situation that randomly appeared somehow (probably involved using a non-mt3g usb car charger but I don't recall the specifics) where my USB functions did not work anymore.
The phone will not mount the sdcard via usb, adb and fastboot does not detect the phone via usb, and the phone does not charge when "on" but I found out it charges normally when "off" using any charger (official mt3g charger or the usb car charger) and will be fully charged within 2hrs on the 1A wall charger.
I haven't found a solution yet and I've been debating whether it is a hardware/software issue. Any input would be helpful
Oh the headphone/mic attachment works fine as well but that is probably not related to the standard mini usb port/pins since the htc extusb includes pins for audio in/out

No AC charging

After trying a few different roms and yesterday my N7 will no longer charge when connected to an AC charger, it still works when connected to a pc.
I'm using the same charger/cable that has been working for months and the charger works with other devices.
I have tried factory reset/wipes and full reinstall. I have also tried restored backups for a few days ago which no longer work either.
Any one know why it would work from pc and not AC? Could it be a hardware problem unrelated to rom changes?
your tablet charges through PC; are you using a USB slot hooked up to a higher power connector (i know some motherboards have those)
I've worked it out. The nexus AC charger has slide on pins for countries different GPO configuration, the head i had on the charger wasn't clipped in all the way and was causing the charger to work intermittently.

[Q] G2 charging problems

Anyone got the same issue?
I cannot charge my G2 via PC or laptop USB. I am using a different cable though.
I've read somewhere that the needed output for a charger to work is 2.0amp, but this is already a USB connected to a computer!
If the charging doesn't work, that means i cannot connect it to the PC at all since it was never detected.
Is it the cable that has problems? This cable that I was using was still working perfectly fine yesterday with my other phone though.
Unless it is usb 1.0 it should only be the cable
Sent from my VS980 4G using XDA Premium 4 mobile app
computer and car charger not working
Me and the wife have LG G2 from Verizon and our phones will not charge from the computer or using our car chargers. Also, two of my 3rd party wall chargers will not put any charge on it. It thinks it is charging, but it doesn't and the percentage continues to drop. Very disappointing.
trac006 said:
Anyone got the same issue?
I cannot charge my G2 via PC or laptop USB. I am using a different cable though.
I've read somewhere that the needed output for a charger to work is 2.0amp, but this is already a USB connected to a computer!
If the charging doesn't work, that means i cannot connect it to the PC at all since it was never detected.
Is it the cable that has problems? This cable that I was using was still working perfectly fine yesterday with my other phone though.
Click to expand...
Click to collapse
I don't know where you got the 2.0 amp from, but it's wrong. The charger that comes with the phone is only 1.8 amps, so you don't need a minimum 2.0 amps to charge the phone. If you plug in a lower amperage cable, you should get a warning that it will take longer to charge and you should use the charger that came with the phone. Haven't tried plugging into my pc yet. I should probably do that now to transfer some ringtones....

[Q] Aftermarket USB 3.0 cables only charge, no data transfer/access in 3.0 mode

I was wondering if anyone is having similar issues with aftermarket cables.
I bought 2 cables that work fine in 2.0 for charging/data transfer.
When I put them into a 3.0 ports nothing happens, there is no prompt to access the phone, and the USB options do not appear on the phone.
I have downloaded the Samsung drivers, and tried 2 different PCs.
I have no issues using the provided Samsung cable.
Any ideas?
I haven't experienced this. Actually, I think the Samsung USB 3.0 cable that came with my phone was bad. When I used it, USB 3.0 would stay grayed out. I had another one for a portable hard drive and that one works fine with the phone. Maybe just try a different brand. These cables seem rather fragile.
LocoBaZuka said:
I was wondering if anyone is having similar issues with aftermarket cables.
I bought 2 cables that work fine in 2.0 for charging/data transfer.
When I put them into a 3.0 ports nothing happens, there is no prompt to access the phone, and the USB options do not appear on the phone.
I have downloaded the Samsung drivers, and tried 2 different PCs.
I have no issues using the provided Samsung cable.
Any ideas?
Click to expand...
Click to collapse
I purchased a 9ft Amazon Basics USB 3.0 cable and all is well. Connecting through a USB 3.0 port, my device was immediately recognized, and I had no problem transferring data files to and from the device.
My only guess would have been to ensure that your PC's USB 3.0 drivers are installed in order for the ports to work properly. Since you're not having any issues with the stock cable, I'm not really sure.
I don't know if it'll make a difference in this case, but I have USB Debugging enabled.
I have all of the drivers update and USB debugging. Think I just got some shoddy cables.
Sent from my SM-N900V using xda app-developers app
I have the same issue. When i use my Samsung cable nothing Happens, But when I use the one from Extenal HD it works Perfect
jncokilla said:
I have the same issue. When i use my Samsung cable nothing Happens, But when I use the one from Extenal HD it works Perfect
Click to expand...
Click to collapse
I called Samsung and eventually after explaining what a micro USB 3.0 cable is and how it is supposed to work, and how it is not working, they finally gave me a place to send the cable and they will supposedly send me a replacement. I'm not holding my breath though. I think I would have had better luck addressing the envelope to "The Twilight Zone."
Sent from my SM-N900V using xda app-developers app
If your 3.0 charger charges fine but is not recognized when plugged into a port I'd check the the port drivers and make sure they are up to date. But first plug into all of your ports. It could be that not all of the ports on your lap/desk top are usb 3.0 friendly. And I've seen instances where if the device has not yet been recognized it will not pick up the device theough a usb 3.0 link. So maybe first get your note recognized by using a 2.0 connector then backdoor with the 3.0 and see what happens.
samsung test all of their cords before they leave manufacturing so getting a dud is very unlikely yet not impossible.
As for the aftermarket cords I normally stick to belkin. Best build quality for a fair price.
ManOfBusiness said:
If your 3.0 charger charges fine but is not recognized when plugged into a port I'd check the the port drivers and make sure they are up to date. But first plug into all of your ports. It could be that not all of the ports on your lap/desk top are usb 3.0 friendly. And I've seen instances where if the device has not yet been recognized it will not pick up the device theough a usb 3.0 link. So maybe first get your note recognized by using a 2.0 connector then backdoor with the 3.0 and see what happens.
samsung test all of their cords before they leave manufacturing so getting a dud is very unlikely yet not impossible.
As for the aftermarket cords I normally stick to belkin. Best build quality for a fair price.
Click to expand...
Click to collapse
I have tried everything.
I plugged into 2.0 and the 3 options pop up to select a mode where 3.0 is grayed out. That menu closes when you unplug.
If you lock your phone while in this menu, you can change the port, unlock the phone and the menu is still there, but it will not allow me to select 3.0.
I have 2 3.0 ports on my laptop, 1 on the docking station, and 1 on my standalone.
None of them work with the aftermarket cable. I will take it as a loss as I really only need them for charging away from home.
LocoBaZuka said:
I have tried everything.
I plugged into 2.0 and the 3 options pop up to select a mode where 3.0 is grayed out. That menu closes when you unplug.
If you lock your phone while in this menu, you can change the port, unlock the phone and the menu is still there, but it will not allow me to select 3.0.
I have 2 3.0 ports on my laptop, 1 on the docking station, and 1 on my standalone.
None of them work with the aftermarket cable. I will take it as a loss as I really only need them for charging away from home.
Click to expand...
Click to collapse
That is indeed odd. Im not sure what to tell you. Hopefully someone will chime in and be of more assistance.
Try changing your network connections. Using usb3.0 puts on airplane mode. If u have wifi on or something it'll show greyed out. It might not be wifi but it's something similar. Saw the greyed out 3.0 the other day and changed a setting on my phone and it came back. Hope it helps.
Sent from my SM-N900V using Tapatalk
I am having the same issue. I have 2 white usb 3.0 cables that I bought online from china via ebay. They were supposed to be USB 3.0 compatible and they look similar to the original stock cable.
When I use the stock cable w/ my usb3.0 port in rear of motherboard, the phone prompts me to enable USB 3.0 mode. When I use either generic cable, it will only function in USB 2.0 mode (I get no prompt for 3.0).
I am running DarthStalker Note 3 Version 6 and 3.4.0_Compulsion Kernel_7.0 on Tmobile version Note 3
I am willing to sacrifice (cut open) one of my generic cables if anyone thinks they can help diagnose the exact cause
I am having issues finding an extra USB 3.0 cable that performs to the level of the one that came with my phone. (My OEM cable works great)
I think the issue is that the 3rd party cables use cheap, thin wire. They can put a micro USB 3.0 tip on it... but the thin wires can't carry the bandwidth.
This is most plainly noticeable by downloading an app that shows the current flow while charging. Try downloading "Galaxy Charging Current *Lite*" and charge your phone through various combinations of
cable (USB2, USB3, OEM, 3rd party)
receptacle (1A, 2A, OEM, 3rd Party),
USB port (USB2, USB3, motherboard, adaptor card)
...etc. Even wireless charging, if you're equipped.
(It should also be noted that the phone will throttle the current flow as it gets closer to full. You'll get higher flow at 30% than 76% or 96%... so keep this in mind as you try different configurations.)
I've found that I got the best current flow (1800mA) using the Samsung USB3 cable, connected to a powered USB3 hub's charging port (no data, just power). This would charge our 3200 mAH battery from 0 - 100% in about 2 hours. When I swapped in a cheap Amazon cable (CableMatters brand)... the current flow dropped to about 800mA... or 4 hours. I emailed CableMatters, and they confirmed that it's a design issue, and that the wires are thin. They were pretty plain about admitting it... and then told me to return the cables to Amazon.
I'm posting all of this useful information not only to be helpful... but also to ask for help. Has anyone found a suitable replacement for the OEM cable? I'm looking for a charging cable... I'm looking for thicker-gauge wires capable of sustaining high current flow.
Any help here? Thanks!
If you are not getting 3.0 speeds then it's not a 3.0 cable. There are many fakes on ebay and amazon.
Only buy Amazon Basics or Samsung branded cables sold by Amazon OR Samsung.
Sent from my SM-N900V using XDA Premium 4 mobile app

Samsung USB-C Cable is Unique?

TLDR: I am only able to achieve a stable data connection using the Samsung usb-c cable that came with the phone. I've had my S8+ since the first day it was available in the US, Apr 21. And I've had this problem since that day.
Details:
When I plug my phone into a computer (transfer files, etc) or my car (Android Auto), it always works fine with the Samsung cable. It almost never works with any other usb-c cable I've tried, seeming to succeed only if the cable sits just right in the port. If it happens to work, and I move the phone/cable at all, it stops. On a computer, the "you plugged in a device" dialog pops up over and over again really fast (1 hertz).
I've tried it with both usb 2.0 and 3.0 ports on a couple towers and 3+ laptops
I've tried at least 3 different kinds of cables and at least 10 total cables. The cables don't sit loosely in the port or anything. They fit snug and hold fast, as I've come to appreciate about usb-c.
The other cables all work fine with other usb-c devices I have -- Pixel phone, Nexus 6p, Nexus 5x, Chromebooks, Nintendo Switch controllers
Charging works fine 90-95% of the time with other cables. When it fails, it slow charges, saying "Ensure the cable is plugged in properly" or something like that
I see articles online encouraging purchase of all kinds of non-Samsung usb-c cables to use with the S8
I would conclude the port is loose, but the cables all fit snugly, and the Samsung cable *always* works. I don't have to wiggle it in the port or anything--no effort at all.
This hasn't been a big deal for me until this week. I have usb-c cables all over the place I can charge with, and I carry the Samsung cable in my backpack for when I need a data connection. But now I have a car with Android Auto, and want to keep a valid cable in there.
Has anyone else experienced this? I searched around some, but couldn't find anything.
I'm using three different brands of type-C usb cables, micro usb cable+included adapter (micro usb to C). All are working fine.
jamesoguntebi said:
TLDR: I am only able to achieve a stable data connection using the Samsung usb-c cable that came with the phone. I've had my S8+ since the first day it was available in the US, Apr 21. And I've had this problem since that day.
Details:
When I plug my phone into a computer (transfer files, etc) or my car (Android Auto), it always works fine with the Samsung cable. It almost never works with any other usb-c cable I've tried, seeming to succeed only if the cable sits just right in the port. If it happens to work, and I move the phone/cable at all, it stops. On a computer, the "you plugged in a device" dialog pops up over and over again really fast (1 hertz).
I've tried it with both usb 2.0 and 3.0 ports on a couple towers and 3+ laptops
I've tried at least 3 different kinds of cables and at least 10 total cables. The cables don't sit loosely in the port or anything. They fit snug and hold fast, as I've come to appreciate about usb-c.
The other cables all work fine with other usb-c devices I have -- Pixel phone, Nexus 6p, Nexus 5x, Chromebooks, Nintendo Switch controllers
Charging works fine 90-95% of the time with other cables. When it fails, it slow charges, saying "Ensure the cable is plugged in properly" or something like that
I see articles online encouraging purchase of all kinds of non-Samsung usb-c cables to use with the S8
I would conclude the port is loose, but the cables all fit snugly, and the Samsung cable *always* works. I don't have to wiggle it in the port or anything--no effort at all.
This hasn't been a big deal for me until this week. I have usb-c cables all over the place I can charge with, and I carry the Samsung cable in my backpack for when I need a data connection. But now I have a car with Android Auto, and want to keep a valid cable in there.
Has anyone else experienced this? I searched around some, but couldn't find anything.
Click to expand...
Click to collapse
It's a big I aqh3 I'm 99.9% positive. My MacBook pro power cable is as good as they come but it flaps like 3x then just says fail on my phone screen despite it working fine lol. It does not do this on for example the eng rom for root
I bought 3 type c cables from 3 different manufucturers. Only one of them doesnt work as advertised. Whenever i plug the phone with the cable the humidity sensor is switched on and it tells me the phone port is wet and i can not charge. Cant fidn any logical explanation but thats what i get
jamesoguntebi said:
TLDR: I am only able to achieve a stable data connection using the Samsung usb-c cable that came with the phone. I've had my S8+ since the first day it was available in the US, Apr 21. And I've had this problem since that day.
Details:
When I plug my phone into a computer (transfer files, etc) or my car (Android Auto), it always works fine with the Samsung cable. It almost never works with any other usb-c cable I've tried, seeming to succeed only if the cable sits just right in the port. If it happens to work, and I move the phone/cable at all, it stops. On a computer, the "you plugged in a device" dialog pops up over and over again really fast (1 hertz).
I've tried it with both usb 2.0 and 3.0 ports on a couple towers and 3+ laptops
I've tried at least 3 different kinds of cables and at least 10 total cables. The cables don't sit loosely in the port or anything. They fit snug and hold fast, as I've come to appreciate about usb-c.
The other cables all work fine with other usb-c devices I have -- Pixel phone, Nexus 6p, Nexus 5x, Chromebooks, Nintendo Switch controllers
Charging works fine 90-95% of the time with other cables. When it fails, it slow charges, saying "Ensure the cable is plugged in properly" or something like that
I see articles online encouraging purchase of all kinds of non-Samsung usb-c cables to use with the S8
I would conclude the port is loose, but the cables all fit snugly, and the Samsung cable *always* works. I don't have to wiggle it in the port or anything--no effort at all.
This hasn't been a big deal for me until this week. I have usb-c cables all over the place I can charge with, and I carry the Samsung cable in my backpack for when I need a data connection. But now I have a car with Android Auto, and want to keep a valid cable in there.
Has anyone else experienced this? I searched around some, but couldn't find anything.
Click to expand...
Click to collapse
I experience the same problem. I haven’t tried the original cable. I just gave up on PC cable cause I never really needed it. I just wanted to use my usb c desktop connector to feel cool since usb c isn’t popular on a desktop yet. But yea constant disconnects unless you plug it without moving it, a slight wind can blow and cause it to disconnect. If the OEM cable works no problem, I’ll just buy one from a4c android store or amazon.
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