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Since upgrading the Galaxy S to 2.2.1 which I absolutely love - must faster than anything previous, sleek, really well done, I've just noticed for the first time that my USB doesn't seem to work.
The computer sometimes sees it but just says the device is malfunctioning, the phone sometimes sees the PC and gives a menu for "ask on connection", but Windows just does not know what this device is at all.
Suspect I may have to reinstall the drivers fully in Windows, remove it completely and try again, if it actually showed up as an unknown device in Device Manager.
I do need to try another PC and cable just in case, but this is what Im having at the moment in Windows:
USB Device Not Recognized
One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it.
Click to expand...
Click to collapse
And the Phone is currently not detecting any connection.
Any thoughts?
Cheers
Simon
I would go with a windows problem and remove the usb drivers/Kies .
Followed by fresh install .
jje
You can find a link to the usb drivers in my signature.
I think its a little more problematic.
I've tried another computer, another OS and another cable no joy.
I've installed aLogCat and Im getting:
Intent Action android.intent.action.ACTION_POWER_CONNECTED
Battery charging.plugType = 1
AC Charge
In MtpReceiverandroid.intent.action.ACTION_POWER_CONNECTED
Battery charging.plugType = 1
Not of USB charging. Dont lauch MTP APP
Click to expand...
Click to collapse
I've done a quick search on this. Hopefully this is as simple as doing a factory reset and format the internal sd.
If not, then Im off to a samsung service centre I think.
Any further thoughts?
:-(
Factory reset the phone, but the USB port still is not working. Charges fine, but don't connect over USB to the PC.
Can it be in debugging mode. Try to switch between mass storage and kies.
Probably you have checked that already..
Sent from my GT-I9000 using XDA App
the same problem from me i tried all but the usb is not working at all. I flashed kernel , i flashed rom but nothing .
Now i am looking to install untouched rom in order to give it to service but when i am trying to flash from recovery i get an error . Any suggestions?
This may sound dumb, but it could be the USB port acting up (loose connection). Try wriggling the cable around or use a different port.
alumine said:
This may sound dumb, but it could be the USB port acting up (loose connection). Try wriggling the cable around or use a different port.
Click to expand...
Click to collapse
I test the usb in all the modes (recovery and download also). I used different computers but the same thing
alumine said:
This may sound dumb, but it could be the USB port acting up (loose connection). Try wriggling the cable around or use a different port.
Click to expand...
Click to collapse
Right, I've tried all available USB ports, two different computers, two different OS's. The phone just does not register a USB data connection. It only recognises AC charging according to the logs.
I think I have a broken USB port on the phone as if I jam the connector in at an angle on the phone, it sometimes registers the data connection but its far too unreliable.
Development mode don't work, Kies, Mass Storage etc... anything. Nothing works.
Factory reset doesn't make it work.
I can't even flash a new ROM as the phone is not detected in download mode.
I've got the phone booked in at a Samsung Service Centre now. I've seen a few webpages referencing corrosion. I tell you what though, this phone has been protected way way more than my old N97. I've had so many phones and not one has suffered from "corrosion". So let them just try and say it's my fault. Im ready for em.
sjdean said:
Right, I've tried all available USB ports, two different computers, two different OS's. The phone just does not register a USB data connection. It only recognises AC charging according to the logs.
I think I have a broken USB port on the phone as if I jam the connector in at an angle on the phone, it sometimes registers the data connection but its far too unreliable.
Development mode don't work, Kies, Mass Storage etc... anything. Nothing works.
Factory reset doesn't make it work.
I can't even flash a new ROM as the phone is not detected in download mode.
I've got the phone booked in at a Samsung Service Centre now. I've seen a few webpages referencing corrosion. I tell you what though, this phone has been protected way way more than my old N97. I've had so many phones and not one has suffered from "corrosion". So let them just try and say it's my fault. Im ready for em.
Click to expand...
Click to collapse
Try cleaning your phone usb port. A guy named omersak had the same problem, and he had solved it. Search for the thread started by him, and how he has solved it.
I hope you can solve it without going to the service centre. And good luck.
Sent from my GT-I9000 using XDA App
Definitely trying that first - thank you to all the people that have been doing the investigation.
It sounds to me like Samsung have got a bad batch of USB connectors that should be replaced under a factory recall.
I don't use mine in a shower, or sauna, or anything like that, I don't even use it in the rain.
The closest it gets to any humidity is being in my shirt pocket from time to time.
Im going to get some meths or something like that and some thin paper and see what I can do with that. Im just off to Homebase!
there are similar problems on the galaxy 3 series where usb suddenly stops working. the following solutions seem to work there:
1. dial *#7284# to open "PhoneUtil"
2. in USB section, switch to modem, and then switch back to PDA
if that doesn't work: reboot into recovery and select "wipe cache partition"
*hth*
I've tried both of those before I start splashing the methylated spirit around. Still no joy.
Wipe Cache don't work, as well as wipe data/format sd/restore factory defaults etc.
I think I've got a 100% hardware fault.
@OP,
I am terribly sorry about your case. Looks like you need to make that trip to the service centre.
At least you have tried out every possible means known.
Sent from my GT-I9000 using XDA App
Also tried the meths. No good. :-(
The USB just started working yesterday. Still a bit intermittent, but when it gets a connection, it maintains a connection.
I've just ordered some isopropyl and a gold plated USB connector to be on the safe side
Hi everyone,
To sdjean: maybe you could read the post I sent a few minutes ago:
forum.xda-developers.com/showthread.php?p=12593413#post12593413
It might explain why your usb data connection does not always work ...
Regards.
I have a Samsung GT-I9000B and I cant use it using USB.
I have 2 usb cables, I am able to find my friends phones.
Now I cant change rom cause odin cant find it too.
Alog cat shows:
E/MTPRx ( 4020 ) Battery charging. plugType = 1
E/MTPRx ( 4020 ) Not of USB charging. DOnt launch MTP APP
Any suggestion?
I'm not an Expert but 2 hints from me:
1. If you have'nt tried yet: Install usb-drivers on pc new and then connect your phone and wait until drivers are installed to your phone.
One times this way worked on my i9000.
2. Look for a zipped rom on xda which you can directly download and install from sd-card.
Sorry, I know my English is bad.
Sent from my GT-I9001 using xda premium
Hey guys so I cant for the life of me get my phone to show up as a mass storage device and I am trying to root my phone and I cant get into it to transfer the roms. I have uninstalled and reinstalled the drivers about 10 times now and I cant get it to work when I click the H drive that it makes it just says please insert a disk.
Anybody know? IT worked for me once a few days ago and hasnt since.
have you tried a different USB Port? I was having the same problem, the USB port on the front of my desktop would work for ADB but would not come up as a mass storage device...I switched to the one on the back and it popped up with no problem.
A_Guy71 said:
have you tried a different USB Port? I was having the same problem, the USB port on the front of my desktop would work for ADB but would not come up as a mass storage device...I switched to the one on the back and it popped up with no problem.
Click to expand...
Click to collapse
Just tried 3 different ports but still no luck.
This is going to sound silly, but try installing PDANet on your computer.
http://www.junefabrics.com/android/download.php
This has fixed many drivers issues I have had with this phone.
I have PDA net and maybe I'm not using it right but I'm not sure. Like I said I got in once right after I installed pdanet I think.
Sent from my Nexus S 4G using XDA App
siiooo said:
I have PDA net and maybe I'm not using it right but I'm not sure. Like I said I got in once right after I installed pdanet I think.
Sent from my Nexus S 4G using XDA App
Click to expand...
Click to collapse
You don't have to use PDANet - it just installs the drivers for the phone.
If you already have it, it may be worth uninstalling and reinstalling to see if this repairs the driver issue.
ok so I did that now when I have pda net connected it it comes up but as drive G but still doesnt open.
Are you sure you don't have the Development Mode box checked under Settings --> Applications --> Development? This bypasses the USB mode when connected to a computer.
You can have development checked, make sure you mount the phone when attached. pda net does a great job of installing the drivers. also use a usb port off of the motherboard not a remote one. possibly you should try a different usb cord. Several people have had issues with their cords
Sent from my Nexus S 4G using XDA Premium App
I'm trying this now and it doesn't seem to be working for me. My notebook just doesn't recognize my phone. It seems straightforward, am I missing something?
Ok so I tried all of it. I got a different cord and a different port and i plug it it press turn on usb storage the drive shows up on my computer but then it says please insert disk when I click on it. This is pretty frustrating. I dont know if its the computer even though its brand new. Could there be an anyivirus or something stopping it?
Ok so now all of the sudden I get it to connect after leaving it there for like 15 minutes unplugging it and plugging it back in.
Another solution if others failed
This happened to me as well.
Nexus S 4G.
USB Storage not working.
Connect to PC and it charges, but does not connect as a Storage Device.
The little notification thing not there at all.
Tried everything listed in this thread and other threads.
Tried wiping data/factory reset.
Tried wiping cache.
nothing worked.
Finally I tried wiping dalvic cache and that worked.
I have no idea what dalvic cache is, but after wiping that and rebooting, all was fine and well again.
If you don't know how to wipe the dalvic cache, it's an option in ClockworkMod Recovery.
NEVER MIND! I was wrong - it was a fluke - it worked for a minute and went bad again - I need to figure out how to clean it I think
91% Isopropyl Alcohol + toothbrush + 10 minutes of back and forth trying to get it to work = clean micro USB port = all is well
FINALLY!!
I had this exact issue. Spent weeks trying to fit it with drivers with no look. If its not the cable its the usb on the device. I cleaned mine out with a ear bud. Must have had some gunk on the connectors.
I already open this kind of thread months ago..
Cant solve it..sent it to sammy center..
Do you want to know what did they said?
There are colony if fungi at the socket usb cable of my nexus s..
What a joke..haha..they cleaned it..and problem solved!
Sent from my GT-I9100 using xda premium
Im aware that one or two other threads have been created with this same general question but one thing they didnt ask is what to do if you cant fix it?
As the thread topic states my Nexus 7 will not connect to my PC via USB (It is not seen at all, its not a driver issue I've tried). It will not charge when turned on but it was charging when turned off last night. When I checked this morning it said I had a full battery but after turning the tablet on it said I only had 60% battery. All the started happening after I charged it with a battery pack at work the other day because I forgot my charger at home (some people have had similar problems after using car chargers). It will let me connect a flash drive to it via USB-OTG. I have tried 3 different cables on 2 different PCs (One running Windows 7 and the other running Windows 8). I really dont know where to go for help anymore as Ive spent the past 2-3 days googling like a mad man trying to find an answer and noone seems to have one.
I would love for someone to really help me out and get some steps that could fix this, however, if its not fixable how do I RMA it? I cant lock the bootloader and I cant flash a factory image.
You say it is not a driver issue, but your symptoms indicate it is. I would start over with the removal and re-installation of the proper drivers.
Groid said:
You say it is not a driver issue, but your symptoms indicate it is. I would start over with the removal and re-installation of the proper drivers.
Click to expand...
Click to collapse
I've uninstalled them. Every time I go to manually install them the guides always say to find where the nexus is and my nexus never shows up. If it was drivers it would still charge when its on. So how can drivers cause the tablet not to charge from the ac adapter?
Try Wugfresh's program. I had issues w/o it.
Sent from my SCH-I535 using Tapatalk 2
dennyjones said:
Try Wugfresh's program. I had issues w/o it.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Thats the toolkit I have installed. Its also the "guide" I am following when it comes to drivers. I tried to see if I could make the nexus connect to the pc while in fastboot and nothing happened then either. Everything he says to do involves the PC actually seeing the nexus :/
Ive changed it from mtp to ptp, toggled debugging, went to different back ups, flashed a new rom, etc etc. I really feel like Ive tried just about everything. Someone mentioned in one thread about some specific code in the nexus being wrong and possibly changing it could fix it but I do not know how I would go about doing that.
I also originally used the Wugfresh toolkit and had problems getting the drivers installed properly on Win7-64. Ultimately, I think I installed pda.net on my computer and on the N7 and was able to connect after that. Haven't had a problem connecting since. Re-read some of the Wugfresh posts about driver problems. You should be able to get it sorted out.
Groid said:
I also originally used the Wugfresh toolkit and had problems getting the drivers installed properly on Win7-64. Ultimately, I think I installed pda.net on my computer and on the N7 and was able to connect after that. Haven't had a problem connecting since. Re-read some of the Wugfresh posts about driver problems. You should be able to get it sorted out.
Click to expand...
Click to collapse
I sent you a PM but I really dont think this is an issue with drivers. I have been able to connect the N7 to my PC perfectly before the other day. Never a problem at all. Now I have uninstalled/reinstalled the drivers as best as I could (currently I have the samsung drivers because they are the only ones that will install without having to verify that the phone is connected via ADB and I had them left over from my Fiance's GNex so they have been here all along when the N7 was actually connecting).
The N7 is not connecting to the PC at all. It does not show up in device manager. You cannot make an ADB connection to it. It has already been rooted and it is running the latest version of Paranoid Android. On top of that the AC adapters will not charge the N7 while it is turned on. Its like the N7 turns away any usb connection other than a USB-OTG cable while it is on.
Also I really do appreciate the help. This has just been really frustrating for me.
Hello,
Since yesterday, I have exactly same issue with my Nexus 7 3g.
Everything is working perfectly but computer doesn't see Nexus at all (nothig works Bootloader, ADB, MTP,PTP).
Charging is fine (looks like), USB HDDs, pendrives are working as before.
Reinstaling drivers, changing to PTP, switchin on/off USB debugging didn't help.
Checked : other Nexus connects to the computer without problems, so its not drivers issue.
I assume it happened after Nexus was connected to my car charger.
Does anybody have solution/fix for that ?
Unfortunately my Nexus comes from USA, can I RMA it in Europe ?
I feel badly for everyone having these issues. I feel very lucky I'm not having them. It sounds as if the microusb port may have been altered/damaged by certain kinds of connections, like the battery pack or car charger. I don't know why this would happen and my own car charger (Moto oem for my Bionic) has worked fine on the N7. I did pick up the usb cable attached to my pc one day and created a static shock to the connector. Since then, that bank of 4 usb ports will not show either my N7 or bionic, but my usb mouse, keyboard, and printer work with them. The other bank still works, as does the pci port expansion card and my front ports. If I do have a glitch with the pc connection, I restart both the computer and the N7 and then it works. Sorry I don't have a solution.
I also assumed a damaged/fried USB post on the Nexus 7. There are 2 data lines and 2 power lines in the charging socket I think. If the power lines are damaged, usb otg may still be working. Its also tying in with the use of a power pack.
davidoff59 said:
I also assumed a damaged/fried USB post on the Nexus 7. There are 2 data lines and 2 power lines in the charging socket I think. If the power lines are damaged, usb otg may still be working. Its also tying in with the use of a power pack.
Click to expand...
Click to collapse
Have you tried switching between MTP and PTP and seeing if that works? If I used the PTP setting for the USB it shows up, I can then move files onto the PICTURE folder and once there move to another folder while using the Nexus.
-AkWingnut
Wow or strange should be more of the reply. I have done this before but it never worked. Thanks for the help. For anyone else needing help here is what I did. First opened the Nexus Tool Kit, then Full Driver Installation Guide, launched USBDeview, then - In particular look for devices with Vendor ID - "18d1" or... "04e8" - Simply right click these devices, and select the option to: - "Uninstall Selected Devices", final step unplugged the device and plugged it back in and it worked. Also MTP enabled USB Debug unchecked. Thanks again...
-AkWingnut
Tried this and haven't had any luck so far. I'm going to try pdanet or samsung drivers again later today and post results.
Sent from my Nexus 7 using xda app-developers app
Have exactly the same trouble. I'm with you guys. USB host works, no reaction in device manager. Did your nexus was unlocked? Rooted?
xxut said:
Have exactly the same trouble. I'm with you guys. USB host works, no reaction in device manager. Did your nexus was unlocked? Rooted?
Click to expand...
Click to collapse
Bump!
I'm experiencing similar issues with my Nexus 5. This is the only thead I can find that has a similar problem. My Nexus 5 worked on SlimKat, I flashed stock L Preview, now my device won't charge when it is powered into the OS. Bootloader works fine and charges when turned off. I upgraded to 5.0 which came out today (Yay!) and the problem persists.
Have any of you lads or ladies had any updates?
nintennuendo said:
Bump!
I'm experiencing similar issues with my Nexus 5. This is the only thead I can find that has a similar problem. My Nexus 5 worked on SlimKat, I flashed stock L Preview, now my device won't charge when it is powered into the OS. Bootloader works fine and charges when turned off. I upgraded to 5.0 which came out today (Yay!) and the problem persists.
Have any of you lads or ladies had any updates?
Click to expand...
Click to collapse
In my case it was a hardware trouble. Fixed by motherboard replacing in official service centre.
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 =)
Hey all. Just got my Galaxy S4 today and I was loving everything about it until... right now. For some reason, the darn USB won't stay connected to the computer. It doesn't matter if it's simply plugged into the computer as an "installer" or as a media device. It'll constantly disconnect and reconnect itself, even when I'm not transferring any files.
It's not the my computer/USB ports, either, since I can transfer files between my HTC Thunderbolt and Nexus 7 fine. I've also tested 2 other USB cables and they all behave the same way.
Anyone know what's going on? Did I get a lemon?
No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.
snwman said:
No im in the same boat. Was trying ti connect in today. I reinstalled and un installed the drivers about 4 times. Tried un selecting usb debugging in developers menu. Installed kies and used the drivers from it still no good. Used 3 different usb leads. Phone will still charge from pc and even when im installing the drivers again and connect the phone it will say that your new device is ready to use but still cant access phone, it simply does not show up.
Wouldn mind was working 2 days ago fine. Same usb port and all. And the port is fine cause my old s3 still reads from the same port.
Click to expand...
Click to collapse
same problem with me!
every thing ok with s3 but the problem only with s4
please we need help to solve this problem!
Same problem
I have also been dealing with this for a while now. I have Windows 7 64bit and I have reinstalled the drivers many times through Kies and manually. It seems like the problem is getting worse since initially I could do some file transfer through usb if i fiddled with the device (changing usb ports, unplugging it, etc). Now I am hard pressed to get it to show up on the computer through MTP at all.
This is quite annoying since I am developing an android app and I need a usb connection in order to test it. A fix would be awesome.
I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.
retsnom said:
I just tested on my sister's laptop and it doesn't have this problem. I clicked around the phone, transferred a 10gb movie, and left it plugged in to see if there were any signs of disconnects. None whatsoever. Odd. Maybe Galaxy S4 just doesn't like something with our computers. This is quite annoying.
I have a fresh Windows 7 64-bit partition I installed the other day so I'll test it out on that and report the results later today.
Click to expand...
Click to collapse
I do same thing, it is worked in another computer.
I am already put fresh win 7 but still same problem..
im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms
snwman said:
im on xp(retro yeah ha ha) but just a pc i have for my phones and stuff. But i got it working again by flashing my firmware through odin and its back working. Im blaming when i rooted it that it broke but ill see if it happens again
edit: Can confirm pc is now picking up phone. I just flashed the most recent stock rom for my carrier through odin and as soon as it finished updating its prefect now. Might wait another while to root it now and wait for more devs to jump aboard for more roms
Click to expand...
Click to collapse
I'm on stock, no root.
Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app
Tested it out on a fresh copy of Windows 7 and it still continuously disconnect. What gives?
taargaa said:
Hi
I don't know if it may help but i noticed the usb doesn't work when the phone is locked.
I did check 'stay active while charging' in dev parameters and i never got disconnected again.
Sent from my GT-I9505 using xda app-developers app
Click to expand...
Click to collapse
Oops, missed your post. Unfortunately, it disconnects regardless of the phone's state.
My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.
dirrtpoor said:
My friend's S4 was doing the same thing on his desktop. Every time he would try to transfer pics the phone would disconnect after a few files.
I tried different things from reinstalling drivers to trying to only copy over a couple of files at a time, nothing worked.
Finally I plugged his phone into one of the back usb ports and transferred over 2gb with no problem and no disconnects since.
My guess is the S4 is a power hog and some usb ports just don't supply enough juice. Try plugging it in to a usb port that comes off a motherboard. Don't use the front ports or usb hubs. Hope this helps someone.
Click to expand...
Click to collapse
I've been trying all kinds of different combinations of USB leads, phone settings and ports all morning and was just about getting ready to start a new Olympic sport of S4 hurling when I came across this post and plugged my USB straight into the back of my machine and it finally works!! Thank you dirrtpoor for your input - a simple fix, but nevertheless it worked.:good:
I suppose it makes sense that a quad core 1.9Ghz phone would be a power hog.
It wouldn't work on my home PC whatever I tried. Front or back USB ports.
On my dads PC sometimes it would display OK and other times "usb device has malfunctioned" (didn't try the rear USB port)
On my work PC it works fine on the rear ports.
I was having the same problem a few days ago, but then I reformatted the SD card, now everything seems OK.
Even the stock gallery app works now...?!
Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.
Samsung S4 sync problem
mgrisan1 said:
Guys I was having the same problem. For the life of me I couldn't figure out why suddenly my S4 wasn't being recognized by my computer. I finally went into developer options and noticed a "USB Debugging - Debugging mode launches when USB is connected" was turned on. I de-selected that, connected my phone and now my computer recognizes it again. I hope that helps guys, it helped me.
Click to expand...
Click to collapse
This may be laughably obvious but I'm a former Apple user, which has it's own dedicated USB connector, so I forget sometimes with the Samsung S4, which has a standard (looking) micro USB connector that I need a USB cable that is enabled for syncing as well as charging...not all USB cords with micro connectors on the phone end will carry the data because I imagine Samsung has made their phone's connector require a different wiring in the cable.
I was pulling my hair out yesterday trying to figure out why the computer wouldn't see the phone..then looked at the USB cable and realized I'd plugged a non-syncing cable in. I tried the cable that came with the phone and bingo, worked like it was supposed to.
Hope this helps, sometimes it's the little things we overlook that drive us nuts.
Any way to connect in master storage with out root.
Sent from my GT-I9500 using Tapatalk 4
Use a different usb cable and usb port. I know it sounds stupid but there has definitely been phantom problems which were solved this way, even with something as simple as adb commands
i have same problem. trying all the way but always with the same result...