I have a serious issue with my Nexus 7 2012. I put CM11 on it and all was great. The power got down to 11% on me, so I plugged it into my computer. I noticed it wasn’t charging, MTP didn’t kick in, and I couldn't get into ADB. I figured I’d screwed up the USB port. I tried different cables all with the same results. I turned the tablet off and plugged it in and the battery started charging. I couldn’t get MTP or PTP to work nor could I get into ADB after it was charged. I did a factory reset, clearing everything, and reinstalled. Same issue.
I can use my OTG cable and TWRP to install software on the tablet. I tried AKOP ROM. It allows me to use my OTG cable but the tablet doesn’t charge. I try to toggle MTP to PTP or turn off USB debugging and the tablet locks and reboots. I try to turn off the developer options toggle and the tablet locks and restarts.
Help! I don’t know what to do with it. I've searched all day.
Check the basics. When you plug your N7 into your computer, are you using a USB 2.0 port? Is it directly mounted on the computer's motherboard (i.e., a rear port)? Are the proper drivers installed so your N7 is recognized as a Nexus 7?
USB specifications only provide .5A power, v. 2.0A power from the AC charger. Get your N7 fully charged,then get back with whether it locks and reboots.
exglynco said:
Check the basics. When you plug your N7 into your computer, are you using a USB 2.0 port? Is it directly mounted on the computer's motherboard (i.e., a rear port)? Are the proper drivers installed so your N7 is recognized as a Nexus 7?
USB specifications only provide .5A power, v. 2.0A power from the AC charger. Get your N7 fully charged,then get back with whether it locks and reboots.
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Click to collapse
Thanks for the reply. Yes. I've done all of that. Multiple computers, multiple cables, multiple chargers. The Nexus is at 100%.
Here's the exact issue I have now: http://forum.xda-developers.com/showthread.php?t=2536272
Well. I'm going to say disregard. My searches show that a craptastic 12 volt car charger probably hosed the N7's mother board. I'm going to try one more fix but I'm sure it's toast.
I have a really weird problem running Windows 8.1 whilst using my Galaxy S 5.
The phone, when plugged into any USB port keeps disconnecting and reconnecting like 2 times a second...
Things I've tried:
1. Different USB cables including USB 2 and USB 3.
2. Different ports.
3. Disabling 'turn off device to save power' in all USB hubs/devices through Device Manager.
4. Using 'High Performance' power mode and ensuring all 'turn off USB devices to save power' options are set to 'No'.
5. Reinstalling the Kies 3 drivers and software.
Here is a video of the issue:
https://www.youtube.com/watch?v=o6tuCp7QNJI
Does anyone else have any ideas? This happens all the time on my laptop...
Yep, happens with mine too, and happens with my nephews S3 too
Also disabled power saving for USB etc
Seems to help if you switch between USB debugging and back again a couple times while it's connected
Is there anything like a proper fix for this? Does the problem stop on Lollipop?
tried a lot
cant connect ....
With the stock charger?
I put the S5 on my trusty 8A 5-port Anker, and immediately noticed this. If you leave the S5 alone, it will settle to constant charging at max amperage, according to Battery Monitor Widget's log.
Nevertheless, I haven't seen such before, not even with my Note 10.1 2014, which uses the same charge mode.
Powered USB hub
leijonasisu said:
I have a really weird problem running Windows 8.1 whilst using my Galaxy S 5.
The phone, when plugged into any USB port keeps disconnecting and reconnecting like 2 times a second...
....
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Click to collapse
I've been fighting the exact same problem.
While I _believe_ there should be a software solution for this, since it wasn't always a problem, I believe it to be power related and have gone for a hardware solution.
The definitive cure for me (as of this morning) was to purchase an external *powered* USB hub.
(FWIW, an Ativa Mobil IT "Travel" 7-port USB 2.0 hub from Office Depot. And only because that was the only model where it could be tested before purchase without destroying the packaging).
Hi there,
Just before starting, I searched all over the place a solution to my issue but none worked so far (changing USB cable, use WugFresh steps to reinstall drivers on Windows, activate MTP/PTP, USB debugging, etc....)
None the steps described in this thread work for me.
My Device :
- Nexus 4 (bootlader unlocked)
- At some point I used WugFresh root toolkit to root my phone, but then reverted to Stock
- Now it is using STOCK 5.1.1
Also :
- I always used Samsung micro USB cables (5V 1.0A instead of 5V 1.2A for the standard Nexus 4 charger) to connect/charge my phone and it always worked great. (2 at home and 1 at work)
- I have flashed several devices (P1000, I9100, Galaxy Nexus...) using those cables and never had issues...
My story :
- My Nexus 4 was shutting down randomly in the past weeks, sometimes it was a pain to start, but I always managed to restart it (holding power 30s, release, then hit power again)
- One day I found myself with the blinking red light of death (one time it was blinking red and green as well), and honestly I don't really know how I got myself out of it and phone is charging well now....
Where I am now :
- After all that, I figured, well, it's time to reflash the device completely, maybe with CM that time...
- But, since then, it has been impossible to connect my phone through USB both on Windows and Linux (Debian)
- I am also hit with that issues where randomly when my phone restarts it optimizes apps just like it does when restarting after a major update
(https://productforums.google.com/forum/#!topic/nexus/IJSOuc7gw0w)
- I booted in recovery, wiped everything (cache + data), but still have the same issue.
- On Windows, I get : "Unknow USB device" (even after reinstalling drivers using WugFresh instructions)
- On Linux, I get this :
Code:
[13068.787800] usb 1-6: new full-speed USB device number 35 using xhci_hcd
[13068.787971] usb 1-6: Device not responding to setup address.
[13068.992061] usb 1-6: Device not responding to setup address.
[13069.196232] usb 1-6: device not accepting address 35, error -71
[13069.196275] usb usb1-port6: unable to enumerate USB device
When I plug my Nexus 5 (hehe always have a spair device) it is recognizes straight away on Linux using lsusb. (same cable)
So at this point, I am thinking that this is a hardware issue. (maybe battery is draining to much power which causes USB connection to fail ?)
I teared down this morning my Nexus 4, removed battery and checked USB port (a bit darker on both top corners), reassembled the Nexus 4.
But still, the USB connection issue remains....
I was so pissed that I ordered both a new battery and a new USB flex before writing this, so that I'm hoping to find the culprit... provided it's hardware related....
The weirdest thing is that in the past my Samsung I9100 ended up the same way... (I changed the USB Flex but didn't work... after that I gave up)
Thanks for any input you could provide to me!
P.S. : I will never buy again a phone with no microSD card support... drives me crazy to be stuck like this.
Found the culprit!!!
Hi there,
Just wanted to confirm that the culprit was the USB flex !!!
I tried the new battery first, didn't work, then changed the USB flex, crossed my fingers... and right after boot got USB debugging/MTP working again !
So if you ran into that same issue, first check the cable, if you pretty sure it's not the cable, then it might be the USB flex...
Attaching a picture of my - bad - USB flex (the connector is a bit dark on the top, also noticed moisture inside...) for reference in case it can help...
Hello boys! I have a very serious problem with my LE PRO 3. Since yesterday, the following is happening BUG: When I connect the charger, it does not load immediately. It only loads if I reboot the device. And if I take it out and put it back, it stops loading again. This also happens when I connect to the PC. The device only recognizes if I leave the cable connected and restart. With the headset the same thing. It only recognizes if I leave it connected and restart the device. I'm on the Cydrass Google edition ROM, and my device is the x720 version. I have already switched to other ROMs (LineageOs, Ressuection Remix, and even the Chinese STOCK ROM 26s, and the problem still persists!) Apparently it's a serious problem recognizing my USB port I do not know what else to do! Please, help me!
even first buy , do you have problem ?
To Vitor_147
Remember, if you change the stock original LeEco rom you cannot say "have a problem with my LePro3", it's no longer the original combo "LePro3" (hardware + software) so expect (and accept) anything (better or worse!) and report the defects to the rom developer.
Now some helping things!
Apart to clean the phone usb c port and to try a new usb cable, you can:
With the usb cable connected, switch the usb debug off (or on) (developer options) then check if your computer detect your phone.
Even if your computer doesn't detect the phone or your phone seems not charging battery, if the usb cable (and charger) is good in 99% of the cases it charges the battery even if not at full charge rate (expect a minimum 4 hours charge time).
Before to give up, the last try is to bring your phone back to factory conditions with everything (but everything!) under the exact conditions of how it came out of the factory, then you can start over there and have an idea of whether the phone has a hardware defect or if it's just a matter of software.
I hope you solve the problem, if you find the right solution please report it here, so other users can learn how to solve this problem! Cheers!
orsonbear said:
To Vitor_147
Remember, if you change the stock original LeEco rom you cannot say "have a problem with my LePro3", it's no longer the original combo "LePro3" (hardware + software) so expect (and accept) anything (better or worse!) and report the defects to the rom developer.
Now some helping things!
Apart to clean the phone usb c port and to try a new usb cable, you can:
With the usb cable connected, switch the usb debug off (or on) (developer options) then check if your computer detect your phone.
Even if your computer doesn't detect the phone or your phone seems not charging battery, if the usb cable (and charger) is good in 99% of the cases it charges the battery even if not at full charge rate (expect a minimum 4 hours charge time).
Before to give up, the last try is to bring your phone back to factory conditions with everything (but everything!) under the exact conditions of how it came out of the factory, then you can start over there and have an idea of whether the phone has a hardware defect or if it's just a matter of software.
I hope you solve the problem, if you find the right solution please report it here, so other users can learn how to solve this problem! Cheers!
Click to expand...
Click to collapse
I already wrote this up in Omni thread, so I'll keep it short. I've also been experiencing this same issue for a while now, it first happened on stock rom, reboot solves it. Darko tried a fix in his eas kernel, seems to fix it (so maybe somehow kernel related). I believe it might be somehow related to the usb-c controller, cause I found cases online of similar issues with pixel phones (i believe the controller manufacturer is the same as in our phones). I actually know the exact moment when my problems first began, after I used my OTG adapter to connect a usb mouse. Few hours after that, the phone wouldnt charge.
{Disclaimer - this part is purely my theory}
I think it maybe somehow related to a safety "switch/fuse" of sorts, or something to do with static discharge or something similar, and here's why. I did a loot of trial and error since the first time it happened to me cause it scared the sh*t outta me, thinkin my phone is broken. I am vigilant about careful handling of usb ports and such, (ocd-ish really) so theres no way I physically damaged it, its not loose one bit, cleaned it out, tried wiggling the cable around anyway, has no effect, so I excluded the possibility of a faulty port/soldering. A few occurences to note
No1 - if I plug my phone in the charger first, and then plug the charger in the outlet, it breaks the port, I have to reboot to fix it. But plug the charger in the outlet first, then the cable to the phone - no problem. (Static discharge of sorts?)
No2 - since it started happening, the only way my usb-c OTG adapter works is if i first plug the adapter in the phone, and then the desired usb device in the adapter. If i try to plug the adapter in the phone w/say a usb stick already connected to it - no go, doesnt work.
Oh... I'm sorry for what happens to your phone! It's true the safest way to charge a phone avoiding current surge/spikes/shocks is to plug first the charger to AC outlet, then the usb c plug to the phone, then the usb plug to the charger. If possible, never plug/unplug the charger to/from the AC outlet if the phone is connected to the charger.
When the phone is full charged, first unplug the cable, not important which side first, then unplug the charger. If the phone is still charging, better unplug first the cable from the charger side to avoid micro spikes on the usb c port.
If you cannot obtain a normal behavior of the usb c port neither with reflashing the phone with the "qfil" system, perhaps a logic port of the usb c port is burned or simply in undetermined state, in the last case a total battery discharge may reset the logic port state and the phone can works fine once fully recharged. I'm sorry I can't help you better at this time! Cheers!
Sent from my LEX720 using XDA Labs
@orsonbear, thats my train of thought aswell, micro discharges occuring while plugging/unplugging causing the controller to freak out, or potentially damage the tiny connections (micro usb only had 4 wires vs 24! in usb-c). But I believe the problem lies somewhere on the software/firmware side, mainly because a reboot solves any issue I have. And also I just remembered, the first time it happened to me was a couple of days after I updated my firmware while updating to 19s, or 20s, cant recall precisely. Anywho, for me it's a minor nuissance, not like the OP who can only connect his phone once before rebooting (I can go for weeks before it occurs).
orsonbear said:
Oh... I'm sorry for what happens to your phone! It's true the safest way to charge a phone avoiding current surge/spikes/shocks is to plug first the charger to AC outlet, then the usb c plug to the phone, then the usb plug to the charger. If possible, never plug/unplug the charger to/from the AC outlet if the phone is connected to the charger.
When the phone is full charged, first unplug the cable, not important which side first, then unplug the charger. If the phone is still charging, better unplug first the cable from the charger side to avoid micro spikes on the usb c port.
If you cannot obtain a normal behavior of the usb c port neither with reflashing the phone with the "qfil" system, perhaps a logic port of the usb c port is burned or simply in indeterminated state, in the last case a total battery discharge may reset the logic port state and the phone can works fine once fully recharged. I'm sorry I can't help you better at this time! Cheers!
Sent from my LEX720 using XDA Labs
Click to expand...
Click to collapse
Yes,
I thought about letting the phone down completely, and see if that does not happen anymore!
Same problem here
Days ago it start happen, exactly how you say, i never change the stock software and it start happen randomly, I have to reboot to recognize anything that I plug into the USB c port, I try factory reset and change from 26s to 23s and it keeps happening so maybe I'm pretty ****ed, someone help me, in my country no one will fix the port u.u (sorry for my English).
Hellao! I'm having a very similar issue, charging works fine and the pc detects the phone but OTG and the audio on my headset is not working. Did someone of you find a solution to this problem?
1. x720, x722 or x727?
2. Where did you buy the phones? (Store names)
3. What kind of USB-C cable were you using? The one that came in the box? Have you used other USB-C cables and adapters to see if it works?
This could be hardware failure due to a lack of QCing from LeEco (just your average hardware issue) or a USB-C cable issue. It's ver. 1.0 on all LeEco Pro 3 models (right)? So I can't say it's the cable for sure. Has anyone attempted to take the phone apart to replace the port? do they even sell the port replacement?
Similar problem for me. About a month ago my headset stop working and the phone did not recognize it at all, tried with the adaptor to 3,5 mm jack and did not work either. Charging worked though.
Found a replacement chip with usb c port and ordered. Yesterday i replaced the charging port, but still the headset do not work at all, and connection to PC does not work ether. Charging still works as usual.
I ordered the phone from grossoshop 7 month ago with their rom. Tried this evening to upgrade the rom from 5.8.018 to 5.9.020, still grossoshop but no difference... It should not be a hardware problem as i replaced the type c port.
Should i try to flash another rom to see if there's any difference?
Any other suggestions?
Thankful for any ideas
Linkan78 said:
Similar problem for me. About a month ago my headset stop working and the phone did not recognize it at all, tried with the adaptor to 3,5 mm jack and did not work either. Charging worked though.
Found a replacement chip with usb c port and ordered. Yesterday i replaced the charging port, but still the headset do not work at all, and connection to PC does not work ether. Charging still works as usual.
I ordered the phone from grossoshop 7 month ago with their rom. Tried this evening to upgrade the rom from 5.8.018 to 5.9.020, still grossoshop but no difference... It should not be a hardware problem as i replaced the type c port.
Should i try to flash another rom to see if there's any difference?
Any other suggestions?
Thankful for any ideas
Click to expand...
Click to collapse
Have you tried switching cables? Could you have broken a contact or something while swapping the port out? Have you tried putting the old port back in to see if the computer recognizes the phone with it? Unfortunately you're gonna have to try everything, even if opening it back up again is tough. LeEco phones aren't exactly known for their build quality. Are you x720? Well, flash whatever ROMs you can, I guess. Might as well try everything.
sk8223 said:
Have you tried switching cables? Could you have broken a contact or something while swapping the port out? Have you tried putting the old port back in to see if the computer recognizes the phone with it? Unfortunately you're gonna have to try everything, even if opening it back up again is tough. LeEco phones aren't exactly known for their build quality. Are you x720? Well, flash whatever ROMs you can, I guess. Might as well try everything.
Click to expand...
Click to collapse
Yes, I have tried to switch the cables so no problem with them. Have not done a swap back again as the problem seem to be similar as before, so maybe a change to a different rom will be the next step for me. If change of rom does not work, maybe then I'll try to swap port again.
And yes, It's a X720
Thanks for fast reply.
Linkan78 said:
Yes, I have tried to switch the cables so no problem with them. Have not done a swap back again as the problem seem to be similar as before, so maybe a change to a different rom will be the next step for me. If change of rom does not work, maybe then I'll try to swap port again.
And yes, It's a X720
Thanks for fast reply.
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Click to collapse
Maybe it's not plugged in or attached correctly so the phone doesn't detect it. Sounds like a hardware issue to me, in all honesty. I once took apart my iPhone 5 to replace the non-functional home button and it wouldn't work no matter what I tried. I had to remove the battery, reseat it, and then attach the home button again. It finally worked after a reboot.
just report in on this thread, I as well recently purchased an x727 experienced the similar issue. Basically as described above no matter what roms i test is always have some sort of camera errors when charging.
sometimes charging doesn't work or camera doesn't work I have to reboot to get it to work. extremely annoying. I think it is hardware related.
Anybody else have a solution?
blanktape said:
just report in on this thread, I as well recently purchased an x727 experienced the similar issue. Basically as described above no matter what roms i test is always have some sort of camera errors when charging.
sometimes charging doesn't work or camera doesn't work I have to reboot to get it to work. extremely annoying. I think it is hardware related.
Anybody else have a solution?
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Click to collapse
i got charging problem dude after second day of use just got it last night x727.ffs.
i replace the usb board and the problem persist, i don't know what to do anymore, if someone has passed this problem please speak I am about to smash this damn bugged phone
Anthp said:
i replace the usb board and the problem persist, i don't know what to do anymore, if someone has passed this problem please speak I am about to smash this damn bugged phone
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Click to collapse
This my advice to anybody considering buying this phone don't why you will get zero support from letv.
I got luckey I have zero problems with phone .
I recommend spending more money and getting a supported phone by the maker.
If you do buy one buy it from Amazon where get a warranty on it.
Sent from my LEX727 using xda premium
Somebody fixed thuis allready as my le2 x626 only detects charging by USB when in fact its connected to the AC adapter.
And extremly slow charging from 9 to 100 % more then ó hours.
Also the phone`s microphone is nog working at all!! And the headphone is nog working!
please help