Hi, i have two problems:
First I flashed the overstock kernel and now i cant use my phone (back to my lg gw620). The screen simply wont respond to any touch so i cant unlock the phone.
Second, I cant connect it via USB despite that it shows as charging, my ubuntu box just shows: unable to enumerate USB device on port 2 so i cant send a replacement kernel to change the overstock one.
Just to clarify, you've tried download mode and ODIN doesn't recognize the phone?
Well, the overstock recovery allows me to go into Download mode, however, neither my ubuntu install at work the win 7 x64 recognize it with odin. Do i Have a 2 days expensive paperweigth?
I don't think it's the kernel...you're missing drivers.
Sent from my SGH-T959 using Tapatalk
I dont even think is the kernel, but it cant be drivers since Ubuntu tells me on dmesg Do you have a bad cable?
Tested with 3 diferent cables, 3 PCS and even a brand new PowerEdge Server we are installing at my job
I guess I can shame on me QQ
..But have you tried installing drivers? Try the ones from samsung website.
i'm having a similar issue with my galaxy s - not the unusable touch screen, just the unrecognizable usb connection.
I have tried several different cables, 4 different operating systems(w7, xp, ubuntu 1010 and puppy), 3 different computers, running normally and under download mode. my win 7 system had its drivers set up properly with kies working fine (and odin for that matter) as of a few months ago and nothing has changed since then so my drivers are fine.
visual inspection of the usb port shows no damage and i've cleaned it with isopropyl alcohol.
under ubuntu, what do you get from the terminal command lsusb? i get nothing, just my other connected devices. i also get unknown device in windows
Last option for me i think is to flash a different kernel, but i'm not entirely optimistic about that one. pretty much ready to send it back to the service centre, but i'll be waiting until i get myself an S2 so i'm not without a phone...
in your case, i think you're **** out of luck - i think send it back to the service centre asap. good luck
march83 said:
under ubuntu, what do you get from the terminal command lsusb? i get nothing, just my other connected devices. i also get unknown device in windows
in your case, i think you're **** out of luck - i think send it back to the service centre asap. good luck
Click to expand...
Click to collapse
Lsusb shows nothing, since the kernel says in dmesg that the devices rejects he usb address. And a second strange sympton is that the port on the pc stays unusable after the cell phone is unplugged and no other device makes it works
Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul
+1
i have the same problem plz help
cambies said:
Hi, background is this..
I have a D802-10C G2 that i rooted the stock 4.2.2 rom a while back using the post chinese method. Easy enough, all worked fine. no complaints. A couple of weeks ago i got offered the OTA 4.4 update, this failed due to the root. I then removed the root using the feature in super su. that seems to have worked as no apps or file managers etc could get root access. However, the OTA still wont work.
Now my problem is my phone will no longer be recognized by any operating system, on multiple computers. I have tried many ADB drivers, Windows 7 wont even detect the device, i've used every PC connect mode, USB debugging. However always the same result, it's as if i'm plugging in a blank usb cable into the computer. Nothing at all.
The only thing that does happen when i connect the phone to a computer is the phone starts to trickle charge. There is nothing detected in Device Manager in Windows 7 I've tried connecting in download mode, nothing. I've tried the LG support tool, PC sync. Nothing.
WiFi does connect to the PC suite fine BTW and other than that the phone is working perfectly. I've also tried connecting multiple usb cables on multiple ports.
I haven't been able to find a single case of the same problem in the week or so i've been looking. Hoping someone can help, i'm thinking i may have soft bricked my phone. I really do not think this is a driver issue.
Any help would be great. cheers
Paul
Click to expand...
Click to collapse
YOu can try checking the device manager or use other USB port on your phone.
buenarc said:
YOu can try checking the device manager or use other USB port on your phone.
Click to expand...
Click to collapse
The problem is not like the usual ones you will see about "computer not being able to see device" I don't think it's a driver or software issue, or if it is it's unlike any i have found in the weeks i've been searching the net for a solution. Here's why....
When i connect the phone to Windows 7 and 8 ( on 3 different computers) No hardware is detected, nothing in the Device Manager, no yellow question marks indicating 'Unknown Hardware'. Nothing, all it does is start trickle charging.
Now even with no ADB, or any driver at all installed, the computer should still detect the phone. Mine does not.
The same thing happens using OSX and Linux Mint 16 (again multiple computers) No devices or mounted or volumes shown at all. Linux terminal command "$ lsusb" does not list my hardware.
This is why i'm pretty much convinced that there is something wrong with the USB port on the phone. Because, if Linux can't see it then surely it's a hardware problem right?
The only other thing i can think of is, i have messed up the phones firmware while trying to unroot it? but only because the timing of all this is just too uncanny.
I think i'll have to suck it up and admit defeat here. Funny thing is the phone works perfectly and charges fine.
Stuck on 4.2 , with no ADB functionality. Perhaps i'll sell it cheap to someone who doesn't care.
Cheers for the reply mate.
Same problem here!
Only my G2 is not rooted, it is still on factory OS and recently updated to 4.4.2.
I have tried on several computers, different ports and no help.
On the first connection to a PC not connected before windows reports "USB device not recognized" problem.
After that every time I connect the phone to the same computer the phone itself only recognizes that it is using USB charging mode, it does not recognize the computer connection (known by the USB ison on android system tray) even with "Ask upon connection option checked".
Even when I manualy change the Android mode in Settings --> PC Connection from MTP to PTP or even LG software, nothing happens.
Definetly there seems to be a problem with the phone, but I don't beleive it's a software but a firmware problem.
Please help if anyone knows what to do.
same thing happened after installing T-mobile rom thrugh twrp. but my device boots into fastboot and i tryed falshing :
laf.img, boot.img, aboot.img, recovery.img, laf.img
but after reboot my LS980 dissapear from device manager and stucked on LG logo.
Dont know what to do now.
I'm no expert, but given there are a lot of them here and none have weighed in on this with any ideas for a fix, i'm going to assume it's a hardware problem.
Anyone else agree? Hardware problem not software?
Cheers
I guess that you already wiped everything right? Apart from that, i'll suggest you to go to some tech supp and ask them if they can verify that each pin of the micro usb is properly working.
Sorry for my english, hope it helps!
Sent from my LG-D802 using XDA Free mobile app
I will try to check the connector although i dont think that it is a hardware issue.
BTW I can enter the download mode after flashing the mentioned partitions and i can also enter the stock LG recovery but when i do the factory reset it keeps showing Factory reset processing ... for ever
It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.
Homero2 said:
It has happened to me the same thing :crying:, and is a problem with the boot.img, if by chance your G2 version 4.4.2 and the the 4.2.2 boot.img, goodbye.
The only solution is to take it to repair a service official, there will change you the card, with the consequent change of IMEI.quent change of IMEI.
Click to expand...
Click to collapse
where are you going to repair your G2?
and how much have you paid the repair?
THANKS
Any fix for this guys i have same problem!
Here I'm getting the yellow !, any suggestion?
Sirs, I flashed the baseband (https://www.androidfilehost.com/?w=files&flid=12880) then it got working back.
solved for me
I have some kinds of that problem, let try:
Settings -> General -> PC Connection -> Select USB connection method -> Media device (MTP) (or whatever)
Got this same issue after flashing cloudy g3 rom. Then later flashing dirty unicorns, which requires jelly bean baseband. But even restoring g3 and 24a baseband, still doesn't work. No pc tethering and no on the go usb. My usb port is basically charge only.
---------- Post added at 03:58 PM ---------- Previous post was at 03:56 PM ----------
Everything else works fine...I actually never even noticed this bc I never tether to pc. But now I have to bc I want flask kdz
Help me please
someone have a solution to this problem?
My Lg G2 D803 still on boot loop (LG logo) and thats all ... no usb connection , reset factory doesnt work ...
HELP PLEASE ...
Thank you
Anyone has an idea how to fix this problem?
same problem
I have a LG G2 . recently updated from vs98027a to vs98039a 5.0 lollipop. Since the update my computer won't recognize my device in download mode and I don't have superuser ppermissions. Help plz
I also have the same problem.
It happened when I tried to backup info through LG PC Suite: the phone disconnected during the process, and now it's not recognized by any PC (http://forum.xda-developers.com/lg-g2/help/lg-g2-recognized-windows-backup-t3155323).
Also found a description of the same problem here: https://www.reddit.com/r/lgg2/comments/2urpnw/lg_g2_usb_only_charging_not_recognized_by_pc/ - no solutions, too.
Did anyone manage to fix this?
installed a new daughter board in my 6p last weekend because the charging port was going out. but now when i connect to my PC it doesnt show up as an android device anymore. instead it tells me "unknown USB Device (Device Descriptor Request failed). ive uninstalled and reinstalled, restarted computer and all the other things i could think of but i've had no luck at all.
I cant even access it thru ADB. everything worked perfectly before installing the new daughterboard. and yes it is an OEM Huawei board that i installed.
any help or ideas on what i could do? thanks..really need to be able to save pictures and such off the phone, and of course, undate roms and other fun stuff haha
r1nstang said:
installed a new daughter board in my 6p last weekend because the charging port was going out. but now when i connect to my PC it doesnt show up as an android device anymore. instead it tells me "unknown USB Device (Device Descriptor Request failed). ive uninstalled and reinstalled, restarted computer and all the other things i could think of but i've had no luck at all.
I cant even access it thru ADB. everything worked perfectly before installing the new daughterboard. and yes it is an OEM Huawei board that i installed.
any help or ideas on what i could do? thanks..really need to be able to save pictures and such off the phone, and of course, undate roms and other fun stuff haha
Click to expand...
Click to collapse
What happens when you put the old board back?
Honestly I haven't put the old board back in because it's such a pain to swap out.
I've had this exact same problem - installed a new daughterboard (trying to fix the muffled microphone issue) and the phone could not fast-charge or perform data transfer. Reinstalled the old daughterboard, and charging and data transfer worked again. Not sure what I'm missing.
Hello guys,
after trying everything I could imagine and find on the net, I still didn't get my PC to recognize my S6 edge plus.
Hopefully someone od you has got some more ideas.
The Problem:
Connected Phone shows "Unknown USB Device (Device Descriptor Request Failed)" in the device manager. No MTP connection and no ADB possible so far.
Done so far:
Samsung USB Mobile Drivers
Kies
Smart Switch (with reinstall of drivers)
6 different cables with 4 PCs (2 Win10, 1 Win7, 1 Linux)
USB-Debugging on / off
*#0808# switched through every mode
USB-Hub drivers
Factory Reset
More Info:
5 of the 6 cables are working just fine for data connection with my S3
There is no infobar tooltip to change USB mode at all, just telling me it's loading
In Download Mode the phone doesn't get recognized by Odin (with same cord and USB Port the S3 does)
In Stock Recovery Sideload Mode the Device does not show up in adb devices (with same cord and USB Port the S3 does)
Regards
up
I'm guessing you have downloaded and installed the Samsung drivers?
New Infos on this case:
Local tech support inspected the phone. They suspect the mainboard to be defective due to corrosion signs.
Of course the repair cost would be ridiculous.
I'm gonna repair it myself, but I'm not quite sure if it's really a faulty mainboard.
I rather think of changing the USB board first, because it's like a 10th of the mainboard and more likely to get wet if that's the reason for the damaged phone.
Any ideas??
Regards
You didn't mention if it charges via USB?
Im in the same situation..
charge via usb but is not able to recognize the phone in any computer (a lot of different cables with 3 PCs)
My unit was wet and i think that something is wrong for this reason.
Hello friend my s6 edge plus demo with smokkierom last day not working ota,
I have activate developer mode for check control usb, but not have possibility for change other mode. Is fixed to mtp mode and not possible change other type.
I have deleted more app. And have chek update for play store.
I have press multiple tap and have activate developer mode to play store.
My idea is phone have one one virus....ajaj
I have reboot the phone with charger connected, and at reboot I have recevied FRP LOCK!!!!!!
Question one.... is possible recovery data?
A this time need connecting with Odin for upload twrp... but pc not find my phone!!
Working only charging.
And have error unknow devices. And not install driver..
Device not have USB ID and PID
My phone have hardware problem?
Best regards thank s help support
Fix
Cento50 said:
Hello friend my s6 edge plus demo with smokkierom last day not working ota,
I have activate developer mode for check control usb, but not have possibility for change other mode. Is fixed to mtp mode and not possible change other type.
I have deleted more app. And have chek update for play store.
I have press multiple tap and have activate developer mode to play store.
My idea is phone have one one virus....ajaj
I have reboot the phone with charger connected, and at reboot I have recevied FRP LOCK!!!!!!
Question one.... is possible recovery data?
A this time need connecting with Odin for upload twrp... but pc not find my phone!!
Working only charging.
And have error unknow devices. And not install driver..
Device not have USB ID and PID
My phone have hardware problem?
Best regards thank s help support
Click to expand...
Click to collapse
Cento50 said:
Fix
Click to expand...
Click to collapse
Hi Cento50. Have You managed to get the phone to work? At first my phone was showing up in "This PC" on Win 10. but after trying Samsung usb drivers to get Odin3 working now it is the same as Yours. Shows in Device Manager as: Unknown USB Device (Device Descriptor Request Failed). A strange Conundrum.
Hello @Photobil2012 yes fix habe worked!
One little wire have replaced 2ohm resistor.
And have fix fast charger and data comunication with PC!
We i have repaced first one diode.
Phone a this time work complete.
First this problem i have connected one hard disk to otg cable with phone battery low!
My suggestion Please caution to use otg interface with high current if have low battery in the phone.
This cause high current drain and possibile burn diode and resistor.
Hi Cento50,
Alright! Thank you very much for the most timely reply and tech info on the successful fix. This is very good news to receive. I just replaced the battery so it is brand new and that works fine now. However, if it is necessary I can apply the same type of fix that you applied. Great work, and thanks again for your help.
hello I'm really hoping somebody can help me because I'm not getting answers anywhere I've halfway through a course to learn mobile tech repairs and I'm completely stuck on a Samsung SM g925a when trying to remove the FRP. I have written my class instructors and I'm not getting any response. I've downloaded all the drivers from Samsung I've updated them all but however it is not allowing me to connect the device to my PC so I can get it into odin to flash combination files. When I plug the device in to my windows 10 pc I receive a pop up saying the last USB device you connected to this computer malfunctioned and windows does not recognize it and then in device manager when I open it it shows as unknown USB device device descriptor request failed. I tried to download the drivers again reinstalled and updated them and that didn't work. I changed all my cords tried it on every Cord I had and it didn't work, yet these cords recognized other devices I had. I also uninstalled the USB driver and then I ran the hardware troubleshooter still got nothing and then I also disabled fast startup none of this has worked. I also have spent countless hours researching on line and I'm just not getting any answers and I get the same troubleshooting ideas I've already tried however I did come across a program USB debugger r but I don't know if I had just downloaded it wrong or had the wrong firmware files but it wasn't working for me I thought maybe that would help me to connect to PC. I'm still learning and only halfway through the course but it seems like this is such an easy issue that I just can't seem to figure out is there anybody out there willing to help me figure this out please I'm sure something simple Im missing or forgetting but I've been dedicated to this phone and I sure can't figure it out it's stopping me right at the gate. Thanks in advance