Database Users

[Q] Cannot connect in MTP mode anymore. Tried a lot, still no solution...

Hello everyone.
I don't know since when or how, since it has been always working for me on my win7 desktop, but when I tried to connect my phone to a new Latptop (with win8) during the holidays at home, it wouldn't detect it as an MTP device.
Well, it doesn't recognise it at all, unless I put it in debug mode, then it's under unknown devices as "Nexus 4" with a failed driver installation.
But I need to get MTP working to back some things up.
I'm running AOKP's Milestone for 4.3 and franco's kernel 193.
I checked if fastcharge was enabled: No
Switched it on and back off: Nothing
Reflashed the Kernel: Nothing
Reflashed AOKP (including the stock Kernel): Still not recognised
Of course several reboots included. Tried all slots and different cables. The cables tested all work for my N7 on Kitkat.
I had issues before with franco's kernel not really disabling fastcharge when I clicked it but I managed to fix that by rebooting or switching it back on and off again. Also this doesn't really give me any clues as I reflashed AOKP which comes with a different kernel that doesn't even support fast charge..
I'm kind of clueless now, I urgently need to back up things from my phone which I now did via Airdroid, but I also need to get MTP back working for bigger files.
Thank you very much for your help!
It would be nice if someone had a suggestion before I try going back to stock.

turn off driver signature verification(ask google how to do)
install universal naked drivers.
there you go

Will it then only be recognised in debug mode? Or normal as well? Since it doesn't even appear in device manager right now when in regular USB mode
Gesendet von meinem Nexus 4 mit Tapatalk

Try the way @opssemnik said, maybe your driver isnt work

andredn8 said:
Try the way @opssemnik said, maybe your driver isnt work
Click to expand...
Click to collapse
I had this problem. Try deleting all android drivers and MTP drivers from your PC using USBDeview (google it). Also try connecting to a different PC to see if the phone can connect at all. Finally, you may need to unlock the lock screen before attaching. After that it connects no problems!

jimbo34 said:
I had this problem. Try deleting all android drivers and MTP drivers from your PC using USBDeview (google it). Also try connecting to a different PC to see if the phone can connect at all. Finally, you may need to unlock the lock screen before attaching. After that it connects no problems!
Click to expand...
Click to collapse
USBDeview did the trick. Thanks a lot.

[SOLVED][HELP] USB issue. Cant connect Odin or Sending file

Okay, Here my problem since my phone got drown. After fixed it with my way (Internet yeah), everthing seems work except Usb. The problem are when connect it via usb to my pc (already installed samsung driver) in notif of my phone doesnt show usb connect or usb debugging but it just charging like normal. Tried to flash via odin buit device doesnt appear and yeah in my pc doesnt said its not recognized (Usb doesnt recognized or something like that). Hopefully it will be fixed without bring it to service center.
Thanks before...
SOLUTION
First
marcussmith2626 said:
the device might have trouble enumerating especially in windows 8.1
plug it in as normal
then plug any other usb dongle in like a wireless mouse thats already been installed
this will force windows into enumerating the device
if it doesnt work then most likely the port is damaged due the water damage it suffered
Click to expand...
Click to collapse
And then...
marcussmith2626 said:
if it now shows in the device manager right click on it and update drivers
select the folder which has the samsung usb drivers or manually install them from the list
Click to expand...
Click to collapse
Extra....
marcussmith2626 said:
iv got windows 8.1 and had same problem
install the samsung usb drivers
put phone into download mode
push up to start connection and it should install drivers
the problem i had was mass storage and that was then solved by pluging the phone in (plug it in after the phone has booted) and then plugging in any other usb dongle
it then says in the status bar usb connected and you then you can select connect to pc and the pc will then install the drivers
Click to expand...
Click to collapse
Credit : @marcussmith2626

VillaVor said:
Okay, Here my problem since my phone got drown. After fixed it with my way (Internet yeah), everthing seems work except Usb. The problem are when connect it via usb to my pc (already installed samsung driver) in notif of my phone doesnt show usb connect or usb debugging but it just charging like normal. Tried to flash via odin buit device doesnt appear and yeah in my pc doesnt said its not recognized (Usb doesnt recognized or something like that). Hopefully it will be fixed without bring it to service center.
Thanks before...
Click to expand...
Click to collapse
have u installed some app recently after which this problem occour
if not the problem is with the usb port of pc
or the usb port of the phone

abhishekr700 said:
have u installed some app recently after which this problem occour
if not the problem is with the usb port of pc
or the usb port of the phone
Click to expand...
Click to collapse
No...
the proble isnt from usb port of my pc and usb cable too (tested it with another device)
i think my phone's usb port :crying:
any solution ?

VillaVor said:
No...
the proble isnt from usb port of my pc and usb cable too (tested it with another device)
i think my phone's usb port :crying:
any solution ?
Click to expand...
Click to collapse
phone's usb port is a hardware problem
you have to get it replaced at the service centre........
BTW i wouldn't mind if u press that thanks button

abhishekr700 said:
phone's usb port is a hardware problem
you have to get it replaced at the service centre........
BTW i wouldn't mind if u press that thanks button
Click to expand...
Click to collapse
yeah, service center
haha thanks pressed dude

VillaVor said:
Okay, Here my problem since my phone got drown. After fixed it with my way (Internet yeah), everthing seems work except Usb. The problem are when connect it via usb to my pc (already installed samsung driver) in notif of my phone doesnt show usb connect or usb debugging but it just charging like normal. Tried to flash via odin buit device doesnt appear and yeah in my pc doesnt said its not recognized (Usb doesnt recognized or something like that). Hopefully it will be fixed without bring it to service center.
Thanks before...
Click to expand...
Click to collapse
the device might have trouble enumerating especially in windows 8.1
plug it in as normal
then plug any other usb dongle in like a wireless mouse thats already been installed
this will force windows into enumerating the device
if it doesnt work then most likely the port is damaged due the water damage it suffered

marcussmith2626 said:
the device might have trouble enumerating especially in windows 8.1
plug it in as normal
then plug any other usb dongle in like a wireless mouse thats already been installed
this will force windows into enumerating the device
if it doesnt work then most likely the port is damaged due the water damage it suffered
Click to expand...
Click to collapse
As you said i am in windows 8.1 right now, and already tried just a minute ago
that result is my pc always notif me "Usb device not recognized" hell yeah my pc still can read this is a device again :good:
As i said Usb device not recognized and then what should i do ?
Thanks for your experience :fingers-crossed:

VillaVor said:
As you said i am in windows 8.1 right now, and already tried just a minute ago
that result is my pc always notif me "Usb device not recognized" hell yeah my pc still can read this is a device again :good:
As i said Usb device not recognized and then what should i do ?
Thanks for your experience :fingers-crossed:
Click to expand...
Click to collapse
if it now shows in the device manager right click on it and update drivers
select the folder which has the samsung usb drivers or manually install them from the list

Ahh..... ah... ah.... Finally !! after plug it in my other pc (Windows xp) device working like normal again ....
Odin i'm coming !! Cant wait for clean install again
@marcussmith2626 Thanks ....
Really a 'Recognized Contributor' !!
Edit : Ok. trying as you said for this pc sir !!

VillaVor said:
Ahh..... ah... ah.... Finally !! after plug it in my other pc (Windows xp) device working like normal again ....
Odin i'm coming !! Cant wait for clean install again
@marcussmith2626 Thanks ....
Really a 'Recognized Contributor' !!
Edit : Ok. trying as you said for this pc sir !!
Click to expand...
Click to collapse
iv got windows 8.1 and had same problem
install the samsung usb drivers
put phone into download mode
push up to start connection and it should install drivers
the problem i had was mass storage and that was then solved by pluging the phone in (plug it in after the phone has booted) and then plugging in any other usb dongle
it then says in the status bar usb connected and you then you can select connect to pc and the pc will then install the drivers

marcussmith2626 said:
iv got windows 8.1 and had same problem
install the samsung usb drivers
put phone into download mode
push up to start connection and it should install drivers
the problem i had was mass storage and that was then solved by pluging the phone in (plug it in after the phone has booted) and then plugging in any other usb dongle
it then says in the status bar usb connected and you then you can select connect to pc and the pc will then install the drivers
Click to expand...
Click to collapse
Haha yeah just follow your instructions was surprises me for long time waiting.... one week exactly :silly::silly:
Coincidental that problem due from windows 8.1
Ok. Done edited post #1

VillaVor said:
Haha yeah just follow your instructions was surprises me for long time waiting.... one week exactly :silly::silly:
Coincidental that problem due from windows 8.1
Ok. Done edited post #1
Click to expand...
Click to collapse
it took me months to figure that one out - even microsoft and samsung hadnt got any ideas
its because windows 8.1 has changed the usb stack and requires that all drivers be digitally signed and has an identifer that the bios can read
this means some old usb device didnt work unless they met condition already although new drivers became available for most things but for some reason samsung havent updated their usb drivers in years (May 5, 2011 is last officall release) so im guessing thats why it doesnt fully work in windows 8.1 and im sure the problem is because its not properly signed so the device fails to enumerate unless you do the plugging in another usb device
other old phones work fine like htc and new samsung phones also work fine so its properly just a strange issue with the way the galaxy y handles usb

marcussmith2626 said:
it took me months to figure that one out - even microsoft and samsung hadnt got any ideas
its because windows 8.1 has changed the usb stack and requires that all drivers be digitally signed and has an identifer that the bios can read
this means some old usb device didnt work unless they met condition already although new drivers became available for most things but for some reason samsung havent updated their usb drivers in years (May 5, 2011 is last officall release) so im guessing thats why it doesnt fully work in windows 8.1 and im sure the problem is because its not properly signed so the device fails to enumerate unless you do the plugging in another usb device
other old phones work fine like htc and new samsung phones also work fine so its properly just a strange issue with the way the galaxy y handles usb
Click to expand...
Click to collapse
Classic problem came out again, my galaxy y still unrecognized.
Yes about 2 hours ago i tell you its succes but after that usb never recognized again.

VillaVor said:
Classic problem came out again, my galaxy y still unrecognized.
Yes about 2 hours ago i tell you its succes but after that usb never recognized again.
Click to expand...
Click to collapse
each time you have to repeat the process
unplug phone from computer
plug it back in
plug any other usb dongle in after

marcussmith2626 said:
each time you have to repeat the process
unplug phone from computer
plug it back in
plug any other usb dongle in after
Click to expand...
Click to collapse
Haha as fast as ....
If any other solution please tell me as quick as you know.
Okay, will try tomorrow ...

VillaVor said:
Haha as fast as ....
If any other solution please tell me as quick as you know.
Okay, will try tomorrow ...
Click to expand...
Click to collapse
unfortunatly thats the only solution iv found for windows 8.1 - if you restart the phone or remove the usb cable you have to go through the process again of unplugging cable plugging back in then plugging any other usb dongle in after - its the only way iv found for windows 8.1 to enumerate the device

marcussmith2626 said:
unfortunatly thats the only solution iv found for windows 8.1 - if you restart the phone or remove the usb cable you have to go through the process again of unplugging cable plugging back in then plugging any other usb dongle in after - its the only way iv found for windows 8.1 to enumerate the device
Click to expand...
Click to collapse
Still no luck, it always showed doesnt recognized, even other pc and laptop (Win8.1, Win8, WinXp). I think its hardware problem

VillaVor said:
Still no luck, it always showed doesnt recognized, even other pc and laptop (Win8.1, Win8, WinXp). I think its hardware problem
Click to expand...
Click to collapse
if its not detecting on xp then its damaged

marcussmith2626 said:
if its not detecting on xp then its damaged
Click to expand...
Click to collapse
Oh ya, first time follow your instruction its succes on windows xp, here is scenario (plug my sgy, plug other device which already installed, notif baloon appear as usb not recognized, plug out sgy, plug in on my other pc which installed os windows xp)
Hmm, seems hopeless for this matter
Will ask google for this classic problem or bring it service center.

MTP Mode not working

Hey,
So I got my D802 today and I want to do the whole Root, Recovery, ROM shenanigans.
But for the love of god I cant connect the phone in MTP mode, so I cant Root, nor install a recovery.
I cant connect to the LG PC Suite either.
Any Ideas?

what connection type are u choosing after plugging it into the computer? are u running Windows, Mac, Linux? Windows will work with mtp out of the box but I think Mac and Linux need phone drivers installed. Windows will need drivers when you're ready to "unlock" using adb.
Sent from Tapatalk using my xposed VZW G2

Right, so I´m running Win7 64 Bit
I tried multiple USB Ports, rebooting PC and Phone, resetting Phone and now i´m all out of ideas
I never had any problems with the other phones I rooted and unlocked on this Computer

E-I-K-E said:
Right, so I´m running Win7 64 Bit
I tried multiple USB Ports, rebooting PC and Phone, resetting Phone and now i´m all out of ideas
I never had any problems with the other phones I rooted and unlocked on this Computer
Click to expand...
Click to collapse
when you first plug in your phone it gives you the option to install the drivers needed to connect in the different modes, if not on the top right corner of the menu with charge/mtp/pc software it should have the option to install the drivers

E-I-K-E said:
Right, so I´m running Win7 64 Bit
I tried multiple USB Ports, rebooting PC and Phone, resetting Phone and now i´m all out of ideas
I never had any problems with the other phones I rooted and unlocked on this Computer
Click to expand...
Click to collapse
you never said what connection type you're choosing on the phone after plugging it in. there are a few options and change how the phone is seen by Windows. some options won't have it display as an mtp device or as a drive letter in my computer.
Sent from Tapatalk using my xposed VZW G2

Usb cable problem?

Try toggle usb debugging
Sent from my LG-D802 using XDA Premium 4 mobile app

Really Weird
I'm having the same issue. I'm running OptimusG3 v1.3, I've never had an issue with it before, I used MTP to transfer files yesterday, worked flawlessy, now it won't. I was trying to map the G2 as a network drive, I installed LGPCSuite, a couple of other software that should be inconsequential, and suddenly my phone says connected as MTP, but my laptop won't recognize or show the device in My Computer. I get installing device drivers prompts, I used the hardware and devices troubleshooter which told me 'LGE Android MTP Device has a driver problem' and LGE Mobile USB Modem has a driver problem. Reinstall device driver -> completed, but still not fixed. I installed LG's universal uSB tool or whatever, no fix. I have no idea wth is up (It's not a USB debugging accidental toggle either). I'll try uninstalling PCSuite. I though it would be more useful

USB doesn't work after OTA

Hey all,
I have tried to google and figure this out but my phone doesn't show up in device manager in windows or in android file transfer on mac EXCEPT when in download mode or when the phone is off/charging via my computers USB port.
So when in download mode, the phone shows up in device manager....
When my device is off and charging via USB port, it shows up in device manager...
I have tried USB debugging mode no change...
Charges just fine. No usb port issues because it connects during download mode etc...
During these times, i obviously can't access the SDcard.... but as soon as the device boots, it disconnects and disappears from device manager even though its still charging etc...
This only happened after the last OTA update.
I assume i will have to restore to defaults as its probably an issue with the kernel and usb protocol but I dont have the phone rooted and i don't want to root it at this time... I am hoping there might be a quick fix and/or setting i am missing.
Thanks!

tronicsmasta said:
Hey all,
I have tried to google and figure this out but my phone doesn't show up in device manager in windows or in android file transfer on mac EXCEPT when in download mode or when the phone is off/charging via my computers USB port.
So when in download mode, the phone shows up in device manager....
When my device is off and charging via USB port, it shows up in device manager...
I have tried USB debugging mode no change...
Charges just fine. No usb port issues because it connects during download mode etc...
During these times, i obviously can't access the SDcard.... but as soon as the device boots, it disconnects and disappears from device manager even though its still charging etc...
This only happened after the last OTA update.
I assume i will have to restore to defaults as its probably an issue with the kernel and usb protocol but I dont have the phone rooted and i don't want to root it at this time... I am hoping there might be a quick fix and/or setting i am missing.
Thanks!
Click to expand...
Click to collapse
You do have to have USB debugging mode checked. If you don't have the developer option enabled in settings, go to about phone, find your build number and tap on it rapidly until it says your developer option is enabled. Back out and you should see a developer tab. Click it and make sure USB debugging is checked. If that doesn't work you might reinstall the latest USB drivers.

i did both of those. the odd part is when in download mode windows chimes that my device it attached.. no problems right? but anytime the android OS is running no chimes at all no recognition at all on any computer... its almost like back in my linux days when the kernal had a usb module failed to load... i swear its as if the kernal turned off usb data communication... power is fine... just wont communicate unless in download mode or in a power off state.... totally weird...

When you plug it into the computer, pull down your notification drawer, make sure USB setting is set to MTP. It usually is set to installer, or charge only by default.
Also I'd say completely wipe out your phone drivers on the computer, and reinstall all new ones.
Possibly reinstall ADB as well.
Sent from my SM-G900V using XDA Free mobile app

Unknown Device on PC

And try everything and I can not more . The phone works correctly, but does not detect the pc ( Unknown Device) even if the drivers installed , USB debugging activated and deactivated ... MTP on and off. I think it's time to change mobile.:crying::crying::crying:
Sorry for my bad English:crying:

edisondem said:
And try everything and I can not more . The phone works correctly, but does not detect the pc ( Unknown Device) even if the drivers installed , USB debugging activated and deactivated ... MTP on and off. I think it's time to change mobile.:crying::crying::crying:
Sorry for my bad English:crying:
Click to expand...
Click to collapse
does it detect it shile in twrp conected? if so
but no on when you are using the phone.? i have this problem what solved mine was reformat my laptop always fix it.

I tried everything
raptorddd said:
does it detect it shile in twrp conected? if so
but no on when you are using the phone.? i have this problem what solved mine was reformat my laptop always fix it.
Click to expand...
Click to collapse
the PC does not detect it in any way , only slow charge. I've tried everything but nothing works :crying::crying::crying:..... sorry for my bad English

edisondem said:
the PC does not detect it in any way , only slow charge. I've tried everything but nothing works :crying::crying::crying:..... sorry for my bad English
Click to expand...
Click to collapse
Reformat computer or try different computer

Assuming, you have no problem with your USB port, USB cable, installed latest LG USB Driver 4.0.4, running Windows 7 or 10...
We need more detailed info from your part to tackle this problem. Are you running on stock rom, kitkat or lollipop? Are your rooted and do you have TWRP recovery?
Then, you need to disable "USB debugging" from the "Developer options" menu. Then replug your USB cable and you can now select MTP instead of charging only mode. Good luck.
Shout out to @raptorddd

cglegion said:
Assuming, you have no problem with your USB port, USB cable, installed latest LG USB Driver 4.0.4, running Windows 7 or 10...
We need more detailed info from your part to tackle this problem. Are you running on stock rom, kitkat or lollipop? Are your rooted and do you have TWRP recovery?
Then, you need to disable "USB debugging" from the "Developer options" menu. Then replug your USB cable and you can now select MTP instead of charging only mode. Good luck.
Shout out to @raptorddd
Click to expand...
Click to collapse
i have fought the no mtp problem and everytime i lost. if you try new things they just dont work. what has worked was to reformat computer then it will work..

I had the same problem with my G2. Unknown usb device, and the error was: "unable to get device descriptor" or something similar. Tried all software solution without success, so i have started to looking for hardware defect. I've changed the usb module, but no success. So, as a last chance, tried another mainboard. And "tadaaaa"... That was the problem. So, start to look for a working g2 with cracked screen, as i did.