Database Users

Not the usual PC connection issue

Hi!
Ive got a big problem cause my Galaxy S just stopped being recognized by any PC. I dont know whats wrong, it just treats USB cable like it was a charger, PC doesnt detect anything neither does the phone. Its very strange since everything worked perfect for the last couple of weeks. I tried to connect it to a notebook i used to flash the phone a week ago and it has been turned off ever since so it cant be any driver related issue. Im afraid my micro-USB port is damaged but i have a custom firmware in it and since i cant reflash it the warranty isnt vaild ehh...
Any ideas?
THX

silly question...
Do you mount the phone via the status bar after you plug it in?

Thats the point - PC doesnt detect the phone AT ALL theres not even a sound that an USB device has been plugged in. The same thing in the phone it just starts charing it doesnt seem to know that its connnected to PC.

sounds like your PC mobo got the USB port fried.
try turning off the PC, unplug the power cord, wait for the energy to drain out, then turning it back on
my Windows 7 x64 some time does that, but it's not a hardware error
on yours it could either be a hardware dead, or the Windows gone Bezerk as usual

I tried different USB devices - other phones, pendrives and a printer and everything works fine except for the Galaxy S. The Samsungs USB cable also works fine with other phones..
I wrote to Samsung and they said to send them the device because its most probably damaged :\ Will they check the firmware version?
btw. as I said in the first post the phone doesnt work on my notebook as well
I wouldnt care so much about this because I can send files using ftp but I cant change the firmware without an USB port working (or am I wrong?)

I sometimes also have this problem. For me rebooting the phone and if it then doesn't work again using another USB port at my PC solves the problem.

Yesterday when the problem occurred for the first time I removed SIM and microSD cards and PC detected a device but it was recognized as 'unknown malfunctioning USB device' but no luck ever since.

Just to let you know my Samsung just fixed itself 0_o Might have something to do with the Windows reinstallation on my PC but it suddely works on my notebook as well. Im really confused now...

USB not recognized

When I plug my phone into my usb port I keep getting an error message
That says
USB device not recognized
one of the usb devices attached to this computer has malfunctioned and windows does not recognize it. For assistance in solving this problem, click this message.
So when I do that it says unknown. I know I have the drivers installed because I can odin back to stock. I am thinking this is the reason why wired tether will not work.
Can anyone let me know what the problem may be?
Thanks.

This has happened to me from time to time. A reboot of the pc and phone has always fixed it.

I just realized I have never used this cable with the phone. I got it at walmart and it is made by fuse. So it could be the cable.

Also try a different usb port. Mine got error error messages on some ports but not the other on the same computer.

I bought several usb cables for cheap online. 1 totally stopped working, and another one disconnects the phone is I move the cable.
I always suspect the cable!

I am having the same problem with my laptop atm...
My computer can't seem to see the epic when it's in d/l mode. I've installed the samsung drivers as well...but no go.
Hopefully someone has a suggestion to fix the problem. I'll be seaching the forums in the meantime.

had the same problem try a different usb port aslo dont use usb multi hubs.

I have the same problems as well.
A reboot fixes nothing.
None of my ports work.
I do not want to replace my epic but this simple issue is nerve wrecking.

I have a similar problem. Both my wife and I have the epic. I have no issues connecting my phone to either of our computers but when I connect my wife's epic neither of the computer's see the phone at all (not even as an unrecognized device). The phone asks if I want to mount the sd card and I say yes and nothing happens. I've tried usb debugging and I can't get Odin to work either for hers (fine for mine). Has anyone else had this issue?
Thanks

Cant connect samsung S1 to PC

Hi,
I'm having a real though time trying to connect my galaxy s1 to a pc. Have tried everything, like kies, direct connection, reseted the device, and no joy.
When I plug the cable it makes that sound as it is connecting but it doesn't show in the PC anywhere, nor even in Device manager.
It can get pwr from the usb cable when is connected; already tried with another cable and same thing.
My final goal is to unlock it.
thanks for any help

have you tried put yoy're phone in depurating mode?

I guess yo mean Debugging mode, as I couldn't found Depurating anywhere. Have selected it and the same effect

HI
I had the same problem after getting nowhere with it, for some reason and I don"t know why, I put it in download mode and then connected it to odin and my PC found it I then disconected it and its been fine eversince.
Jim

#Samsung Kies always makes problems on Windows x64 !
##I would recommend, if you got 32-Bit Computer, to use that ;-)
#If you Want just flash over Odin, then is this driver package enough
##[Link]--http://download2us.softpedia.com/dl/85b009d47a0940e89eee2297a531d100/4f577870/300141878/drivers/mobile/SAMSUNG_USB_Driver_for_Mobile_Phones_1.4.8.0.exe
#The Package is also enough for If you want just to connect to mass Storage (Phone's SD Card)
Don't Forget to Thanks, if it was useful for you!
_______________________________________________

Hi there.
By direct connection you mean the USB Mass Storage mode, right?
It might be some weird, random problem with the samsung system drivers. I used to have such problems about two years ago, back in the days of Froyo. Have you tried re-installing them? There was a link to proper drivers file in one ICS installation tutorial, and those drivers can be downloaded here. If you go about trying this method, lemme know if it worked.
Cheers.
PS: Unlike diklooc there suggested, do not never EVER go back to x86 OS. That's the worst advice. Kapisch?

Did you check your usb port in System ?
Sometimes it stuck with another lastest device

Hi,
have tried everything, and finally only in a WinXP32 could be abble to get the error shown on the file atached.
But nothing (warnings) come up in Device Manager
Unninstalled everything (kies) and tried to install only the driver and nothing happens.
Should I try to mount it on a linux?
or is it dead?
thanks

i have this problem too
wat chan I do???
my sgs can not connect to my PC

This may help...
Hi there - I don't have the same phone as you, but I did encounter the exact same problem. I've been searching around and it looks like the most common fix was to simply replace the cable. I don't know what kind of cable you have, but my phone (a Samsung Focus i917) uses a mini-usb connector. I found that my Amazon Kindle used the same connector.
When I was using the Samsung cable, I'd get intermittent connects and charge power. The OS would report unknown device. When I switched computer's = same result. I switched to my Kindle cable and the computer instantly recognized the device and installed the drivers. After 12 hours of troubleshooting, factory resetting my phone (blah - lost everything) it turned out to be the cable. I know that this isn't an easy troubleshooting step for most people, because who has an extra cable? I just got lucky that my Kindle uses the same connector. I'm now suspecting (due to the prevalence of this connectivity problem coming from people with Samsung phones - there are a LOT of reported issues) that there is probably a Samsung cable problem in general.
Good luck with your phone.

try
try select mass strong ...

Tips and unlock advice.
nasdriver said:
Hi,
I'm having a real though time trying to connect my galaxy s1 to a pc. Have tried everything, like kies, direct connection, reseted the device, and no joy.
When I plug the cable it makes that sound as it is connecting but it doesn't show in the PC anywhere, nor even in Device manager.
It can get pwr from the usb cable when is connected; already tried with another cable and same thing.
My final goal is to unlock it.
thanks for any help
Click to expand...
Click to collapse
Nasdriver, I currently have a similar problem but mine is related with Samsung Kies as I can't get either my older SGS1 or my newer Samsung Nexus to get recognized by Kies. I also suspected the cable thing and even read it could be a USB port issue but neither of them was my problem (I have 3 cables and 8 ports on 2 computers that result in the same thing). I can connect other devices with the same cables and they work, so I suspect my problem is focused around the Samsung device drivers.
My advice is if you can go in a systematic manner, first focus on the cable (easiest to replace), if you get the same results with a new cable, then focus on the USB physical port, clean it with some Isopropyl alcohol, if the port works for other devices (camera, other phones, etc..) on the same cable but not with the SGS, then try reinstalling the samsung device drivers.
Oh, and if you want to unlock your phone, the EASY way is to download the Galaxy S Unlock application from the Android market (no affiliation) it's free (but the developer does accept donations) and it WORKS. I won't bore you with my 3 week journey trying to unlock my Bell SGS phone here in Canada, had I found this app first I would have done it in less then 2 min saved myself a LOT of frustration.
Good luck

[Q] USB device not recognized

I can't connect my phone to laptop it always shows it as unknown device .I have uninstalled it couple of in device manager and plugged it still same even its in USB debugging enabled .keep rebooting my laptop and keep trying still the same
Turn my off plug it to laptop them turn on still Its window 7. Tell me what to do ????? I think! It was rooted then I got OTA update (I was new I didn't know that I shouldn't install that I was happy to install on my rooted phone ) that's from where problem started I think.now I want to root my phone but it's not connecting .HELPPP

binsalamat said:
I can't connect my phone to laptop it always shows it as unknown device .I have uninstalled it couple of in device manager and plugged it still same even its in USB debugging enabled .keep rebooting my laptop and keep trying still the same
Turn my off plug it to laptop them turn on still Its window 7. Tell me what to do ????? I think! It was rooted then I got OTA update (I was new I didn't know that I shouldn't install that I was happy to install on my rooted phone ) that's from where problem started I think.now I want to root my phone but it's not connecting .HELPPP
Click to expand...
Click to collapse
Try reinstalling the drivers and/or use a different usb cable or different jack.

Believe me I have done all that different cable and PC reset my phone reset my PC .just because I have rooted my phone I can't send it for replacement and I can't unroot it without connect to PC and that is the problem .I'm here because this is my last hope .
Sent from my Nexus 4 using xda app-developers app

any updates on this?
i'm having the same problem. my n4 is not recognized - i've tried three different computers and i can't even get it to show up so i can move files in/out of the phone.
i bought this n4 used from kijiji. i just want to get it back to complete stock form with locked bootloader.
i've tried three different machines all windows 7 x64 - might try an xp machine but i think it's the phone
factory reset the phone
tried with and without usb debugging
tried 4 different cables
phone has unlocked bootloader
cannot get into recovery, i get an triangle with robot lying down
phone shows up as unrecognized usb device

binsalamat said:
Believe me I have done all that different cable and PC reset my phone reset my PC .just because I have rooted my phone I can't send it for replacement and I can't unroot it without connect to PC and that is the problem .I'm here because this is my last hope .
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
If you have an unlocked bootloader use this tool to lock it: https://play.google.com/store/apps/details?id=net.segv11.bootunlocker
To unroot use the permanent unroot feature in SuperSU.
Order is important since the Bootloader tool requires root.
Sent from my Nexus 4 using xda app-developers app

binsalamat said:
I can't connect my phone to laptop it always shows it as unknown device .I have uninstalled it couple of in device manager and plugged it still same even its in USB debugging enabled .keep rebooting my laptop and keep trying still the same
Turn my off plug it to laptop them turn on still Its window 7. Tell me what to do ????? I think! It was rooted then I got OTA update (I was new I didn't know that I shouldn't install that I was happy to install on my rooted phone ) that's from where problem started I think.now I want to root my phone but it's not connecting .HELPPP
Click to expand...
Click to collapse
SeraldoBabalu said:
any updates on this?
i'm having the same problem. my n4 is not recognized - i've tried three different computers and i can't even get it to show up so i can move files in/out of the phone.
i bought this n4 used from kijiji. i just want to get it back to complete stock form with locked bootloader.
i've tried three different machines all windows 7 x64 - might try an xp machine but i think it's the phone
factory reset the phone
tried with and without usb debugging
tried 4 different cables
phone has unlocked bootloader
cannot get into recovery, i get an triangle with robot lying down
phone shows up as unrecognized usb device
Click to expand...
Click to collapse
Try following these directions to properly install the Google drivers.
http://forum.xda-developers.com/showthread.php?t=1830108

Thanks for your response!
Do still have that problem ?
How did slove it?
Sent from my Nexus 4 using xda app-developers app

thanks. i installed the android sdk and java jdk but still have the problem. i believe the problem is with the phone 100%
my nexus always shows that it's charging on AC whenever plugged in. doesn't matter if it even is to AC or USB. the phone shows up as unrecognized device with a bang in the USB section of the device manager. on some computers it doesn't even show up.
i tried on my macbook pro and it doesn't even show up there but in every case, the phone charges.
wondering if there's a switch or toggle somewhere that will turn it on and get it working
i'm going to install a windows xp VM as a last ditch resort and see if it at least shows up there.

SeraldoBabalu said:
thanks. i installed the android sdk and java jdk but still have the problem. i believe the problem is with the phone 100%
my nexus always shows that it's charging on AC whenever plugged in. doesn't matter if it even is to AC or USB. the phone shows up as unrecognized device with a bang in the USB section of the device manager. on some computers it doesn't even show up.
i tried on my macbook pro and it doesn't even show up there but in every case, the phone charges.
wondering if there's a switch or toggle somewhere that will turn it on and get it working
i'm going to install a windows xp VM as a last ditch resort and see if it at least shows up there.
Click to expand...
Click to collapse
Make sure your device is on MTP and try an other data cable which has no missing/broken data wires inside.
Sent from my Nexus 4 using xda app-developers app

yep it tried on mtp and ptp with 4 different cables. two original nexus 4 cables, one nexus 7 cable and a blackberry cable. they all work with my other nexus 4... just not this one.
the windows VM didn't work unfortunately.

SeraldoBabalu said:
yep it tried on mtp and ptp with 4 different cables. two original nexus 4 cables, one nexus 7 cable and a blackberry cable. they all work with my other nexus 4... just not this one.
the windows VM didn't work unfortunately.
Click to expand...
Click to collapse
That is strange, it should work with the Windows Virtual Machine.
Maybe it is to do with the standalone machine using it in the same time.
Sent from my Nexus 4 using xda app-developers app

Same problem here. USB is not recognized using my Nexus 4 ( it used to be recognized on two PCs, but no longer), but another Nexus 4 connects perfectly. I can only charge a USB rate on chargers that used to charge at ac rate. I've tried everything, and more than mentioned in this thread.
LG-E960, Tapatalk b4

I've ordered a replacement USB port via Amazon for $23. Once I install it, I'll update this thread.
LG-E960, Tapatalk b4

Hi guys,
Seems that I've got the same trouble. Got my N4 (stock ROM, 4.2.2) a couple of weeks ago and everything was ok - connection as MTP, connection for debug and so on. But yesterday I connected it to my PC and found that the device indicates charging but not USB connexion. So I've tried to reboot PC and N4, tried other cables and 2 other PCs (my with Win8, and those with Win7 and Linux Mint if matters). Other devices are ok (Huawei Honor, N7, Milestone2).
The phone just doesn't detect USB connection - in both MTP and PTP. Then I tried to plug in wall charger and connect back again to USB. AND IT WORKED! The phone detected the connection so I was able to mount it and detect with adb. I thought that the problem was solved but when I connected it next time - same ****. This time nothing helps (most likely that there wasn't any casual relationship between wall charger connection and temporary fix...)
What options I've got now? Try to root the device and look into syslog to detect if it's a software issue or disassemble the device and try to find any defects on USB port?
Thank you,
Alex

allookin said:
Hi guys,
Seems that I've got the same trouble. Got my N4 (stock ROM, 4.2.2) a couple of weeks ago and everything was ok - connection as MTP, connection for debug and so on. But yesterday I connected it to my PC and found that the device indicates charging but not USB connexion. So I've tried to reboot PC and N4, tried other cables and 2 other PCs (my with Win8, and those with Win7 and Linux Mint if matters). Other devices are ok (Huawei Honor, N7, Milestone2).
The phone just doesn't detect USB connection - in both MTP and PTP. Then I tried to plug in wall charger and connect back again to USB. AND IT WORKED! The phone detected the connection so I was able to mount it and detect with adb. I thought that the problem was solved but when I connected it next time - same ****. This time nothing helps (most likely that there wasn't any casual relationship between wall charger connection and temporary fix...)
What options I've got now? Try to root the device and look into syslog to detect if it's a software issue or disassemble the device and try to find any defects on USB port?
Thank you,
Alex
Click to expand...
Click to collapse
I got mine to work by using a 2 into 1 usb plug. The kind that comes with portable CD writers. Once I got it working I reflashed stock 422 and the problem is gone. Turns out it was a bad flash from the previous owner.
Sent from my Nexus 4 using Tapatalk 2

SeraldoBabalu said:
I got mine to work by using a 2 into 1 usb plug. The kind that comes with portable CD writers. Once I got it working I reflashed stock 422 and the problem is gone. Turns out it was a bad flash from the previous owner.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Thanks for advice. During this day it worked properly twice - the phone just started detecting connection. No obvious reasons for that... I got a new device with stock 422 from amazon and haven't flashed or event rooted it. How do you think, should I try to flash it with official 4.2.2? Now I can say that it's most likely a software issue.

allookin said:
Thanks for advice. During this day it worked properly twice - the phone just started detecting connection. No obvious reasons for that... I got a new device with stock 422 from amazon and haven't flashed or event rooted it. How do you think, should I try to flash it with official 4.2.2? Now I can say that it's most likely a software issue.
Click to expand...
Click to collapse
I'd say try a factory reset first and see how that works.
Sent from my Nexus 4 using Tapatalk 2

SeraldoBabalu said:
I'd say try a factory reset first and see how that works.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
Tried it out - the result is the same. Now I can not even unlock the bootloader to reflash 422... Btw I didn't managed to find a 2into1 cable but checked if the same trick would work with USB hub with external power - it works really better. The device can detect the connection almost all the times and I can see it listed in adb devices and as a mounted storage. Though in fastboot mode this doesn't help. Device remains unrecognized.

allookin said:
Tried it out - the result is the same. Now I can not even unlock the bootloader to reflash 422... Btw I didn't managed to find a 2into1 cable but checked if the same trick would work with USB hub with external power - it works really better. The device can detect the connection almost all the times and I can see it listed in adb devices and as a mounted storage. Though in fastboot mode this doesn't help. Device remains unrecognized.
Click to expand...
Click to collapse
well if you're getting a connection to the computer but not in fastboot, your drivers might just need removal/reinstallation.
once you get it going, reflash the stock 4.2.2 from google and see how it goes.
if that doesn't work and you can get it going, get it replaced by Google.
if you can, try it on a mac.. they don't need the drivers installed. just run it all from terminal.

Okay, I've managed to track down the issue...
Once I got it available for fastboot I've unlocked bootloader and then flashed with Cyanogen. The problem remained but I could get dmesg output for plug-in event. I've managed to get logs for problematic case (doesn't detect USB data connexion) and for correct behavior case (when Android detects USB data connection).
No sense to put the whole log pieces here just a brief quotes.
For correct case:
Code:
Avail curr from USB = 500
For incorrect case:
Code:
Avail curr from USB = 1500
USB module firmware tells the system that it has detected data-connection and enabled low-power mode (500mA). In this case Android initiates mtp and adb:
Code:
<6>[62539.001178] adb_open
<6>[62539.001269] mtp_bind_config
<6>[62539.001422] adb_bind_config
And in problematic case USB module firmware incorrectly indicates for the OS that there are only power-connection (5V/ground). I cant say exactly where the issue is but there are only two options - bug in USB module firmware or physical fault of connection (pins, bus or whatever else). Anyway I've to replace USB module or just go with it and use adb over network (the matter is that sending the device back to Amazon seller from my country would cost me 1/3 of the purchase total so I consider that just unreasonable).
Thanks to LG - for my money I got not only a box with device but also whole lotta fun =)

P9 Lite only doesn't connect to PC

Hello, recently my device stopped being detected on PC. When I connect USB cable, it only starts charging, without debug mode and MTP. I tried 6 different cables, and both Windows 10 and Arch Linux. Also, it takes more time for the device to detect that cable is connected than before. Anybody had a problem like this before? Are there any solutions available?

SteadyDisorder said:
Hello, recently my device stopped being detected on PC. When I connect USB cable, it only starts charging, without debug mode and MTP. I tried 6 different cables, and both Windows 10 and Arch Linux. Also, it takes more time for the device to detect that cable is connected than before. Anybody had a problem like this before? Are there any solutions available?
Click to expand...
Click to collapse
Hi! I had the exact same problem last week. I tried everything I could think of but to no avail. I took the phone back to the store and the in-store geek could not solve the problem either. Eventually, they gave me a replacement handset there and then.

What is your Windows version ? I already have this issue using a "Naked" version of Windows (without Media Player pack).

SteadyDisorder said:
Hello, recently my device stopped being detected on PC. When I connect USB cable, it only starts charging, without debug mode and MTP. I tried 6 different cables, and both Windows 10 and Arch Linux. Also, it takes more time for the device to detect that cable is connected than before. Anybody had a problem like this before? Are there any solutions available?
Click to expand...
Click to collapse
Try turning on debugging and selecting file transfer in notifications when you plugged it in also there is a auto mode when you plug it into a computer you may have changed it to another option that stops you from doing file transfers try look and see if you accidentally did that it should look like this.