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Tablet not detected when connected via usb at all

I connect my tablet to my two laptops, one is win 8.1 and the other osx, neither shows any sign of knowing the tablet is connected at all.
it does not prompt me to instal any drivers, i dont see it in device manager though i could be missing it. definitely doesnt show up in file explorer as a drive. have tried switching from mtp to ptp and back again. I have no dea. The same cable when connected to the charger works fine, but no sign of life on a computer.
I'm trying to root it and get CM10 on there but this is stopping me in my tracks.
edit: i also just tried an older windows xp computer, no luck their either.

Bad cable?
Turn in USB debugging in developer options?

sbdags said:
Bad cable?
Turn in USB debugging in developer options?
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Tried both that I own. And it charges fine. Also tried connection the keyboard dock and then the cable to that. Out of ideas.
USB debugging has been enabled and disabled multiple times. Multiple reboots. I'm going to try rolling back the firmware from .10 to .8

edgex said:
I'm trying to root it and get CM10 on there but this is stopping me in my tracks.
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You don't need to root it to install a custom ROM, you need to unlock the bootloader.

_that said:
You don't need to root it to install a custom ROM, you need to unlock the bootloader.
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Well its successfully unlocked. But I'm like 99% sure I need root for goo manager to install twrp. Or USB to work to install twrp via fastboot.... No?

edgex said:
Well its successfully unlocked. But I'm like 99% sure I need root for goo manager to install twrp. Or USB to work to install twrp via fastboot.... No?
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Click to collapse
I wouldn't start installing custom anything without working fastboot and adb access.
- Make sure the contacts of the connector and cable are clean.
- Do the equivalent of "lsusb" under OSX to check if the tablet is detected.
- Try different USB ports.

_that said:
I wouldn't start installing custom anything without working fastboot and adb access.
- Make sure the contacts of the connector and cable are clean.
- Do the equivalent of "lsusb" under OSX to check if the tablet is detected.
- Try different USB ports.
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Click to collapse
Have tried five ports accross three computers on three operating systems. Two usb cables, and the use of the dock should have bypassed any dirty connections. I can try Ubuntu live boot tomorrow if it comes to that.

Sent it off to get fixed, they verified they had the same problem, waited weeks for a replacement part, they replaced it and sent it back. And its doing the samn damn thing. So done with this tablet.

edgex said:
Sent it off to get fixed, they verified they had the same problem, waited weeks for a replacement part, they replaced it and sent it back. And its doing the samn damn thing. So done with this tablet.
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Did you freeze or disable your system apps by any chance?

LetMeKnow said:
Did you freeze or disable your system apps by any chance?
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No, and I would think a factory reset which I've done multiple times would have undone that even if I had on accident some way.

edgex said:
No, and I would think a factory reset which I've done multiple times would have undone that even if I had on accident some way.
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How do you connect the tablet to the PC? Always through the dock USB?
Do you have the same problem when connecting the tablet directly? Undock it, use the original cable to connect to different USB ports.

A bit of an emergency...

Hey there, guys and gals,
I'm having a bit of an issue here, and it's somewhat serious.
The issue is as follows. I have Android 5.0.1 on my Nexus 5. When I connect my computer to my laptop... nothing.
Nothing at all. It doesn't show up in device manager, not even as unknown. Fastboot doesn't detect it, nor does ADB. I can't do anything, and it's scaring me. I don't know how I could have broken it, but I need to know how to fix it.
I'm happy to do whatever to get it working, so please help...
Update: Tried to factory reset, to see if it would fix the issue. It's stuck "Erasing...", and won't go further. I'm afraid my phone may be hard-bricked... Is it possible to reflash these using JTAG, and if so is there anyone that can assist with that process?

CypherX1389 said:
Hey there, guys and gals,
I'm having a bit of an issue here, and it's somewhat serious.
The issue is as follows. I have Android 5.0.1 on my Nexus 5. When I connect my computer to my laptop... nothing.
Nothing at all. It doesn't show up in device manager, not even as unknown. Fastboot doesn't detect it, nor does ADB. I can't do anything, and it's scaring me. I don't know how I could have broken it, but I need to know how to fix it.
I'm happy to do whatever to get it working, so please help...
Update: Tried to factory reset, to see if it would fix the issue. It's stuck "Erasing...", and won't go further. I'm afraid my phone may be hard-bricked... Is it possible to reflash these using JTAG, and if so is there anyone that can assist with that process?
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Click to collapse
Is it stock or what? are you rooted?

Also , keep in mind that the factory reset can take up to 30 minutes.
IMO it sounds like a busted cable/usb port on either side / incorrect drivers.
Edit : JTAG is not possible on our devices , access is locked from the chipset itself.

Are u on Windows 8.1 if so I had a problem with Windows thinking that my phone was a acer and I had to go the driver settings and manually tell it that it was a ADB USB connection then it would connect fine also could be USB cable I found the nexus 5 to be very picky about cables

Sometimes I get that but it solves by going into dev and checking and unchecking usb debugg, but sounds more like a busted usb plug

Have you considered that you may be using incorrect drivers on your PC? This issue can be caused by having improperly installed drivers.

dkconor said:
Have you considered that you may be using incorrect drivers on your PC? This issue can be caused by having improperly installed drivers.
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Alxhn said:
Sometimes I get that but it solves by going into dev and checking and unchecking usb debugg, but sounds more like a busted usb plug
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Click to collapse
xstokerx said:
Are u on Windows 8.1 if so I had a problem with Windows thinking that my phone was a acer and I had to go the driver settings and manually tell it that it was a ADB USB connection then it would connect fine also could be USB cable I found the nexus 5 to be very picky about cables
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Niflheimer said:
Also , keep in mind that the factory reset can take up to 30 minutes.
IMO it sounds like a busted cable/usb port on either side / incorrect drivers.
Edit : JTAG is not possible on our devices , access is locked from the chipset itself.
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Click to collapse
AndreIrawan97 said:
Is it stock or what? are you rooted?
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Click to collapse
Right. I'll address you all at once for ease.
Firstly, the USB connector functions fine. My USB-OTG cable still allows me to access files on a flash drive.
Secondly, drivers can't be an issue in this case. It won't even enumerate the device in device manager. As if the phone simply isn't plugged in.
Thirdly, Win8 isn't the issue, as I"ve had this phone connected to this computer many, /many/ times.
So it must be a problem within Android 5.0.1
But here's the problem. In order to install anything else, I'd have to install a recovery. In order to that, I need root. In order to root, I need USB. I'm lost, guys...

I just had an idea does towel root work on 5.0 if so u could try that?

xstokerx said:
I just had an idea does towel root work on 5.0 if so u could try that?
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Hmm... That might work. I'll take a look. But if it succeeds, then something gets broken later in the process, this thing is a paperweight, right?
Edit: According to http://forums.androidcentral.com/an...29-rooting-nexus-5-towelroot.html#post4125236 Towelroot will never be possible on Lollipop. I didn't go much further than that though...

Ya I just read that to bummer
Edit: as of now there is no way to root without pc sounds like u may have some sort of hardware failure I'm guessing only way to fix is to send it in and that's 150 bucks min

xstokerx said:
Ya I just read that to bummer
Edit: as of now there is no way to root without pc sounds like u may have some sort of hardware failure I'm guessing only way to fix is to send it in and that's 150 bucks min
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Well... This happened when I updated via OTA (after reinstalling the stock recovery) to 5.0.1 after 5.0. I did this all over USB. Immediately thereafter, it quit. I got it to boot, btw. The erasing problem fixed itself, and it's now running, but the USB is still stuffed. This is sounding more like software than hardware. Almost as if whatever chip talks via USB lost it's own firmware somehow.

Cable or driver 95% sure. Did you try connecting it to a windows 7 /linux pc ? And ... u can never be sure but try connecting to a usb2.0 port. I had those issues when I accidentally plugged my cable in my frontal panel ( usb3.0)

A few months ago I had the same problem, my phone got not recognized by adb or fastboot. I played around a whole day with drivers and stuff like that. At the end I found a post on the internet describing that not all USB cables are able to do adb connections and I should try the original USB cable that came with my Nexus 5. So I looked for that particular cable and hey presto it worked right away.

And 2$ usb cables do break over time. They might still charge , but one cold solder joint and no connection

CypherX1389 said:
Secondly, drivers can't be an issue in this case. It won't even enumerate the device in device manager. As if the phone simply isn't plugged in.
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So you are correct. I didn't see that in your post, my bad.

Have you tried with another cable maybe?

Make sure you have either MTP or PTP checked in Settings/Storage/USB computer connection.

Niflheimer said:
Cable or driver 95% sure. Did you try connecting it to a windows 7 /linux pc ? And ... u can never be sure but try connecting to a usb2.0 port. I had those issues when I accidentally plugged my cable in my frontal panel ( usb3.0)
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Georg2808 said:
A few months ago I had the same problem, my phone got not recognized by adb or fastboot. I played around a whole day with drivers and stuff like that. At the end I found a post on the internet describing that not all USB cables are able to do adb connections and I should try the original USB cable that came with my Nexus 5. So I looked for that particular cable and hey presto it worked right away.
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Telyx said:
Make sure you have either MTP or PTP checked in Settings/Storage/USB computer connection.
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Alxhn said:
Have you tried with another cable maybe?
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Niflheimer said:
And 2$ usb cables do break over time. They might still charge , but one cold solder joint and no connection
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I've tried multiple cables. I KNOW that this cable is fine for ADB, because it works fine for my other devices. All of them. I may be marked a newbie on the forums, but I'm really not one. When I first signed up for this account I was, but that was in what... '07?
I've tried:
Drivers (Obviously won't work.)
Cables
Rebooting
Factory Reset
Different Computers
Linux
Windows
Switching USB connection modes
Toggling Dev Mode/Debugging on/off
Nothing works. It HAS to be a software issue on the phone. I don't think anyone read it, but it's almost as if the IC that handles USB connections has lost it's firmware. I don't think that can happen, honestly, so it must be whatever's in the ROM that TALKS to that IC that's causing the issue. Problem is, I don't know how to fix the ROM without USB connection and Fastboot.

CypherX1389 said:
Nothing works. It HAS to be a software issue on the phone. I don't think anyone read it, but it's almost as if the IC that handles USB connections has lost it's firmware. I don't think that can happen, honestly, so it must be whatever's in the ROM that TALKS to that IC that's causing the issue. Problem is, I don't know how to fix the ROM without USB connection and Fastboot.
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Its unlikely that the ROM will be the cause if the USB port suddenly stops working.
Do you have a custom recovery?
If not, then not much you can do except send it in for repair/replacement.

Stuck in recovery without an OS and i can't use the usb port.

Hi guys,
Two weeks ago, I decided to try another rom, as I often do.
I booted into the recovery, formated everything, and got the rom ready on my computer.
However, when I connected the usb cable to the phone, nothing happened. Strange, it had no problems before. Tried another PC and a few other cables (the original one too). Nothing.
The phone only charges but isn't recognized by any computer (it doesn't even show up in the device manager and there is no sound). The drivers are ok, it worked before that.
I also tried an otg cable with the rom on a usb drive and it doesn't see that either.
I thought, "great", my usb port data pins must be dead so I ordered one. I'm so lucky that i got a DOA one. (this one isn't even charging the phone)
So now I'm waiting for a new one or a refund.
Do you know any way to transfer a file/rom to the phone that has no OS (it boots fine in the recovery - twrp) without using a cable?
Thanks

I'm not sure of the finer details but can't you do it via fastboot. Or at least I would imagine you could install stock rom this way. ??? Like I said I'm no expert just a guess.
Good luck.

gaosphappy said:
I'm not sure of the finer details but can't you do it via fastboot. Or at least I would imagine you could install stock rom this way. ??? Like I said I'm no expert just a guess.
Good luck.
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Do you know a way of using fastboot without a usb cable?

iulian1421 said:
Do you know a way of using fastboot without a usb cable?
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Click to collapse
You cannot use fastboot without a USB connection to a computer.
Maybe there is some dust or dirt in your USB port. Try using some compressed air to blow it out, or try taking a small plastic knife or something similar and scraping it a bit. Once your computer recognizes is, then you can proceed.

It is possible that a windows update or something messed with the drivers. I would uninstall the drivers and start over.

No Fast Charge and PC connection

Hello colleagues, for 2 or 3 days I've experimented that I don't have a fast charge (and it can take me to charge it like 6 or 7 hours ....) and there is no way that it can recognize the computer, Problem, how do I get it to work ???
I tested several USBs? Yes, in two Windows and a Mac
Have I tried other cables? Yes, 2 official and one no official
I tested it with another terminal? Yes, my partner has another Android and connects on both the USBs and the different cables ....
Have I tested it with other ROMs? Yes, I have tried the Gold Eagle, the LineageOS .... the only thing I can not put a Stock by Odin because neither in Recovery nor in Download mode it recognize the PC .... (and is precisely what I want to do to try to fix the problem)
Only (I think) I would stay to try the Clear Internal Memory but of course, it gives me something to leave it as a brick because it does not connect to any PC ....
To finish saying that Drivers are installed (and that on 2 PCs with Windows 8 and 10 and on a Mac do not recognize me ... it is rare)
Thank you very much in advance and sorry for my English!!

You need latest Samsung USB Drivers, latest Odin3, latest stock firmware (use SamFirm) for your model and optional adb + drivers. Reflash with newest stock and you will see...
About FastCharging... You use orginal cable? And orginal dedicated FastCharger? If yes, must works... I never have problems with FastCharging on NNE5.1 ROM (look my signature).
P.S.
If the PC's not recognize phone how you put ROM's for example from PC to phone? Or is working only on some mode for example in recovery mode MTP option?

rifek4 said:
You need latest Samsung USB Drivers, latest Odin3, latest stock firmware (use SamFirm) for your model and optional adb + drivers. Reflash with newest stock and you will see...
About FastCharging... You use orginal cable? And orginal dedicated FastCharger? If yes, must works... I never have problems with FastCharging on NNE5.1 ROM (look my signature).
P.S.
If the PC's not recognize phone how you put ROM's for example from PC to phone? Or is working only on some mode for example in recovery mode MTP option?
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Click to collapse
Hi, I use AirDroid, just to copy the ROMs into de Phone...but no, I canno't connect it by any form.....I tried in Recovery, Download Mode, changing the differents options in Developer Mode....nothing, there is no way to connect it to my PCs (It charges though..)
About the Fast Charing...yes, everything is original and with another cables neither....
That's weird and I'm pretty sure that with an Odin flash it will fit it but I cannot connect it!! (I tried everything, with differents drivers etc..)

Xusko17 said:
Hi, I use AirDroid, just to copy the ROMs into de Phone...but no, I canno't connect it by any form.....I tried in Recovery, Download Mode, changing the differents options in Developer Mode....nothing, there is no way to connect it to my PCs (It charges though..)
About the Fast Charing...yes, everything is original and with another cables neither....
That's weird and I'm pretty sure that with an Odin flash it will fit it but I cannot connect it!! (I tried everything, with differents drivers etc..)
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When you connected phone to PC anyway is "beep" sound that PC found new device? Or nothing?

rifek4 said:
When you connected phone to PC anyway is "beep" sound that PC found new device? Or nothing?
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Yes, I hear the "beep" but it appears this message (sorry if is not literally, is Google Translator):
"The USB device is NOT recognized, one of the USB devices linked to this computer has malfunctioned and windows has not recognized it "and I have a recommendation:" reconnect the device. If windows still have not recognized replace it ""
So it is connected, it charges but I canno't use it....in 2 PCs with Windows 8, Windows 10 and in a Mac with Sierra (In MAC it just do nothing..)

Look's like broken USB-port, some pin's or something... That can be also why fastcharging not working, only normal.

I'll keep trying and reading about it...I don't want to expend more money in this phone (I already changed the battery 3 months ago to improve...nothing ). But thank you very much for your answers!!

Xusko17 said:
I'll keep trying and reading about it...I don't want to expend more money in this phone (I already changed the battery 3 months ago to improve...nothing ). But thank you very much for your answers!!
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Click to collapse
Because if you changed battery in S6 to new same battery that cannot give you so much... Current batteries do not wear out so fast through charging cycles, for example the battery from 2 years old S6 will hold almost same time as the new one (not half the time as it was in for example iPhone 5 after longer using). If you put battery from S7 Edge then yes, ofcourse... 1000mAh more. I will have orginal one in my S6 in monday, I let people's know how it's working (but i'm sure that's best solution, here can look: https://vordhosbn.com/index.php/blog/tech/galaxy-s6-battery-mod-s7-edge-battery/).

Same issue here
Xusko17 said:
Hello colleagues, for 2 or 3 days I've experimented that I don't have a fast charge (and it can take me to charge it like 6 or 7 hours ....) and there is no way that it can recognize the computer, Problem, how do I get it to work ???
I tested several USBs? Yes, in two Windows and a Mac
Have I tried other cables? Yes, 2 official and one no official
I tested it with another terminal? Yes, my partner has another Android and connects on both the USBs and the different cables ....
Have I tested it with other ROMs? Yes, I have tried the Gold Eagle, the LineageOS .... the only thing I can not put a Stock by Odin because neither in Recovery nor in Download mode it recognize the PC .... (and is precisely what I want to do to try to fix the problem)
Only (I think) I would stay to try the Clear Internal Memory but of course, it gives me something to leave it as a brick because it does not connect to any PC ....
To finish saying that Drivers are installed (and that on 2 PCs with Windows 8 and 10 and on a Mac do not recognize me ... it is rare)
Thank you very much in advance and sorry for my English!!
Click to expand...
Click to collapse
Did you manage to solve this problem.
Having same issue.
What is the status of your phone now.

Your USB port Is faulty or the wiring is coming loose internally. My s6 only charges on a custom ROM because the USB port has s power regulator that is not working and the stock ROM will not let the device charge. But the custom ROM let's it charge just fine. Its not a firmware bug because you have tried multiple Roms. In my opinion it is hardware related. If you want to open your phone I can help you further. But if you don't know how... DO NOT OPEN IT. the screen is glued and you will definitely break things if you don't know how to remove it

USB not working after flashing Lineage OS 15.1

Hi all, a couple nights ago I flashed Lineage 15.1-20180806 to my OPO and everything went smooth. This morning I tried to connect it to my pc to transfer some pics and to my surprise the PC doesn't recognize it.
It looks like the PC is "trying" to establish a connection because the led in the phone blinks really fast for some small periods of time. The phone isn't charging when connected to the PC either.
What I have already tried:
- I already enable USB debugging in developer options
- Set MTP as default usb configuration
- Tried 2 different cables and different usb ports in PC.
I will try again in another computer when I get home but, honestly, this doesn't seem to be a problem with my PC or the cable as those were the ones I used when I flashed the rom and I also used the same cable when I transferred files to the same PC in the past. The phone was running Lineage OS 13 before the flash I think.
Any idea what else can I try to get it to work? I'm afraid I will be attached to this rom forever since I won't have a way to flash another ROM right?
EDIT:
If I go into recovery mode (TWRP) and plug the usb cable the PC recognizes it and I can transfer my files. So I'm 100% sure this is on Lineage OS. Again, when I get home I will see if ADB works while in TWRP but still would like to know if any of you guys has had this issue solved.
Thanks!

do you have anything important on your oneplus one

kallum7 said:
do you have anything important on your oneplus one
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Nothing so far. It will become a back up phone soon.

Hi you need to follow this guide https://www.google.co.uk/amp/s/foru...neral/guide-unbrick-oneplus-one-t3013732/amp/ and even though it says it is do not use for soft brick just use it anyways

kallum7 said:
Hi you need to follow this guide https://www.google.co.uk/amp/s/foru...neral/guide-unbrick-oneplus-one-t3013732/amp/ and even though it says it is do not use for soft brick just use it anyways
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Click to collapse
Thank you, will give it a try and report back later.

adrek09 said:
Thank you, will give it a try and report back later.
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Click to collapse
okay

Is Lineage OS 15.1 supporting VoLTE by any way.

Had the same issue... and had this issue always coming back, currently with LOS18 (some devices worked, others didnt - couldnt see a pattern).
I tried all the triggers like setting File Transfer, disabling USB Debugging - nothing worked...
...until I rebooted my device (a YT703L).
In the end, it should be either (not sure which one actually)
File Transfer - always on (in DevSettings Default USB) or
USB Debugging off (also Dev Settings)
AND reboot.