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[Q] Help: GT-P6210 not detected by W7 32 bit Enterprise at all.

Hi,
Quick background: Former sys admin with some Unix experience. Already own a Toshiba Thrive rooted with CWM. Gave that to the wife and got me the GT 7+. Read the forum here prior to buying. Rooted on day one.
Stats: GT-P6210 Build: HTJ85B.UEKL1 P6210UEKL1
PC: Windows 7 21 Bit Enterprise SP1
Kies: Kies_2.1.1.11124_17_6
Later on the first day, after installing aps, I installed latest version of Kies and plugged it in with the supplied usb cable in order to transfer some files to my Sandisk 32Gb microsd. Kies already running and debugging off as per the instructions. Results: Tab plays a notice and I see the MTP connected icon. My pc does NOTHING. No sound, no notice, Kies does nothing.
I unplugged and tried the other 3 ports. 2nd port gives me same result and on the 3 & 4 port I lose the tab's MTP notice and it begins charging.
So, this is what I have done in order:
1. Re-installed Kies--->same result. No MTP notice on tab.
2. Debugging on--->same
3. Tried in on my room mate's W7 machine---> Alas! I get a driver installation and I am able to see both drives. I quickly unplugged and thanked him.
4. Cleaned my pc by:
a. Deleting all USB controllers
b. Deleting all USB installations on registry (HKEY_LOCAL_MACHINESYSTEMCurrentControlSetEnumUSBSTOR)
c. CCLEANER the whole system.
d. Turn off. Pull off battery. Press power button to drain motherboard.
e. Restart and re-install USB controllers.
f. Restart again.
5. Plug in again--->Tab plays a notice and I see the MTP connected icon. My pc does NOTHING. No sound, no notice, Kies does nothing.
6. Pull my hair, bang my head, wished I would have kept the Thrive. (just plug, and drag and drop)
Left it plugged to the pc overnight. Next morning I see the found new device on systray and it is trying to find drivers. I quickly open Kies and see some activity as it tries to connect. and after a few seconds, it stops. Result: No drivers installed, no Kies recognition, no drive letters, nothing.
8. At this point I ask my room mate to let me plug in on his pc to see if he still sees it and nothing happens on his pc.
9. I wipe the table back to stock.--->Tab plays a notice and I see the MTP connected icon. My pc does NOTHING. No sound, no notice, Kies does nothing. Then after I tried other ports, it begins charging and I lose the MTP notice.
10. I re-roo,t reconfigure the beast, and do a backup. Tablet is running smooth as silk, but it never connects. This all happened in the last three days.
11. Last thing I did, as I am writing this with the tablet plugged in to the pc and MTP notice on, was to un-mount the microsd and remount. MTP re-initializes and it does nothing.
I may be suspecting a cable and unfortunately, I am in no position to get my hands on another one in a timely manner. At this point, I could reflash back to a stock firmware, send back to amazon and wait for another one to come in three to four weeks (I am deployed to a remote area) and I just don't want to do that.
The tab runs great. Love the size and speed. I guess I can continue taking out the microsd card out every time I want to add a file, but I am afraid that it may eventually end up ruining the card and possibly the tablet.
Please help. I have scoured the internet, but all I ever find is solutions that I already have tried.
Thanks in advance,
Sal

you could use adb over wifi.. There are a few apps in the market for this. Does adb recognize the tab when its plugged in via USB?
Also try Android commander, it is a GUI based adb server, you should be able to navigate to sdcard/extstorages/ and your external card should be there
Sent from my HTC Glacier using Tapatalk

You could also use a file explorer like Root Explorer and Dropbox to transfer files back and forth.

Have you tried a different USB port on the PC? like one round the back.
Also, try without the sdcard in.
Ticked/unticked USB development/debugging on the tablet?
If it works on another computer though it would suggest its your own PC which has the problem, not the tablet.
tried with Linux on the same PC?
Does Odin see the tablet when in download mode?
if you have clockwork mod recovery, doesn't that have a USB mount option ? It does on my gs 2. My tab isn't with me to check.
Oh and kies has an option to reinstall the driver. Did you try with the older version of kies again?
Sent from my GT-I9100 using xda premium

ringnutz said:
you could use adb over wifi.. There are a few apps in the market for this. Does adb recognize the tab when its plugged in via USB?
Also try Android commander, it is a GUI based adb server, you should be able to navigate to sdcard/extstorages/ and your external card should be there
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
I'll try adb. I will install it and see if how it works. Time is tight so I will report later.
Sal

crunchie-uk said:
Have you tried a different USB port on the PC? like one round the back.
Also, try without the sdcard in.
Ticked/unticked USB development/debugging on the tablet?
If it works on another computer though it would suggest its your own PC which has the problem, not the tablet.
tried with Linux on the same PC?
Does Odin see the tablet when in download mode?
if you have clockwork mod recovery, doesn't that have a USB mount option ? It does on my gs 2. My tab isn't with me to check.
Oh and kies has an option to reinstall the driver. Did you try with the older version of kies again?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
I have done all that you mentioned with the exception of Linux and Odin. I am not going to get into Linux as that would start a whole other project. I will install ADB to see if I can force the drivers.
I just tried the CWM mount USB mount but get "E: Unable to open ums lunfile (No such file or directory)"
Also, on my friend's pc worked once but not after that.
I will continue to explore the ODIN suggestion.
Thanks,
Sal

chad_k69 said:
You could also use a file explorer like Root Explorer and Dropbox to transfer files back and forth.
Click to expand...
Click to collapse
I use ES Explorer (wonderful app!) now. My end-state is not to have to remove the card every time I transfer a file.
Sal
EDIT: Sorry, I see now the dropbox suggestion. Yes that would work for smaller files, but I am not sure that dropbox can handle movie size files. It would be a last resort solution.
Thanks,
Sal

Adb is probably going to be your best bet. It can be a pain to set up at times, but in the long run is a must have for any Android device. Kies normally installs the drivers that adb uses, so hopefully you can get them to install. If it still doesn't work I would suggest swapping it out for a new tab, as much as that sucks. If you need help, I constantly check these forums, so I should be able to provide some support
Sent from my HTC Glacier using Tapatalk

ringnutz said:
Adb is probably going to be your best bet. It can be a pain to set up at times, but in the long run is a must have for any Android device. Kies normally installs the drivers that adb uses, so hopefully you can get them to install. If it still doesn't work I would suggest swapping it out for a new tab, as much as that sucks. If you need help, I constantly check these forums, so I should be able to provide some support
Sent from my HTC Glacier using Tapatalk
Click to expand...
Click to collapse
Well, got ADB installed and running. Set the path and ran it. Plug the tab with debugging clicked on, and got "MTP connected" on the tab's screen. At this point I am excited since I never seen the "MTP connected " on debug mode. I typed the "adb devices" command and got "List of devices attached" ___________________.
Yep, blank. Obviously the pc is not seeing it. My conclusions are the following:
1. Bad cable
2. Bad device
The fact that it recognized once on my room mates' pc and then none at all, and the fact that it was recognized on my pc for a brief random time, then it means that the device can't handshake with the motherboard and thus is a communication issue.
I'll try my luck with Samsung tech support and see if they can replace the cable.
Just thought of something, would installing Windows XP Mode under a Windows Virtual PC recognize new devices or just feed from the Windows 7 library?
Sal

saldman said:
Well, got ADB installed and running. Set the path and ran it. Plug the tab with debugging clicked on, and got "MTP connected" on the tab's screen. At this point I am excited since I never seen the "MTP connected " on debug mode. I typed the "adb devices" command and got "List of devices attached" ___________________.
Yep, blank. Obviously the pc is not seeing it. My conclusions are the following:
1. Bad cable
2. Bad device
The fact that it recognized once on my room mates' pc and then none at all, and the fact that it was recognized on my pc for a brief random time, then it means that the device can't handshake with the motherboard and thus is a communication issue.
I'll try my luck with Samsung tech support and see if they can replace the cable.
Just thought of something, would installing Windows XP Mode under a Windows Virtual PC recognize new devices or just feed from the Windows 7 library?
Sal
Click to expand...
Click to collapse
Hmm, that is strange.. I was new to samsungs and when I tried to root it it took me a while because I didn't know that kies installed the drivers. After I installed it though adb devices showed my tab connected...
Sent from my HTC Glacier using Tapatalk

You still haven't tried Odin in download mode though.it could just be a bad flash
Sent from my GT-P6210 using xda premium

crunchie-uk said:
You still haven't tried Odin in download mode though.it could just be a bad flash
Sent from my GT-P6210 using xda premium
Click to expand...
Click to collapse
I placed the tab on download mode and queried it from adb and got nothing. I then queried it via ODIN3 and got no response as well.
I have come to terms that it has to be the device or the USB cable. Just ordered two (yes, two) different type cables to test out the theory. If they don't do it, then I am sending the tab back to Amazon.
It takes about a week to get stuff shipped where I am at so I'll check in later and report.
Sal

Just an update.
I bought a cheap cable from Amazon for $ 3.31 US to test the cable theory and guess what? It worked.
Curse you Samsung for your lack of QC with your cables. I have read throughout most of the forums (not just this one) and it seems that cables for these devices are notoriously finicky.
While on the one hand, I am glad that I got a cable that works, Samsung owes me over thirty hours of my life that I had to spend on troubleshooting a brand new device.
The part that I hate the most is that when I tried to contact Samsung's tech support, all they kept telling me is that it must be my pc even after I told them all the troubleshooting that I had done. Yes, they played the blame game.
My Toshiba Thrive worked right out of the box with a standard micro usb cable.
Ok. Rant off.
Sal

Glad to hear you got it working. Personally I have a ftp server set up on my comp that I use to transfer files back and forth. Much easier IMO than having a cable every time I need something transferred
Sent from my HTC Glacier using Tapatalk

[Q] Root the Charge without computer

Guys-
In a quandry - I should have rooted a couple months ago. I cannot get my Charge to recogize a USB connection with the comptuter. Computer recognizes something is trying to connect but computer gives me a USB Device Not Recognized message. It charges the phone when connected to the computer but doesn't ask me how I want to use the phone (as a mass storage device or media player) any more.
To make a long story short, I have tried everything - different USB cables, different USB ports, different computers, USB debug on and off, Ask on Connection and Mass Storage settings on and off. Have even gone thru several master resets of the phone and still will not recognize a computer connection.
Would love to root and hold on to this thing for at least a little longer, so my last thought is to ask if it's possible to root this device without a computer connection. From what I've read through on some other forum threads it's possible with some phones. I'm hoping this one can manage it.
Thanks, in advance.

While I'm certainly no expert, I am pretty sure its impossible to do what you're asking.
Sent from my GT-N5110 using XDA Premium HD app

Yep, it's no HTC, so you need a computer to flash the custom recovery.
Sent from my Rezound using Tapatalk 4

Your computer is seeing something. Sure seems like a driver problem. What os is your computer running?
Sent from my SCH-I510 using xda app-developers app

elvisruns2000 said:
Guys-
In a quandry - I should have rooted a couple months ago. I cannot get my Charge to recogize a USB connection with the comptuter. Computer recognizes something is trying to connect but computer gives me a USB Device Not Recognized message. It charges the phone when connected to the computer but doesn't ask me how I want to use the phone (as a mass storage device or media player) any more.
To make a long story short, I have tried everything - different USB cables, different USB ports, different computers, USB debug on and off, Ask on Connection and Mass Storage settings on and off. Have even gone thru several master resets of the phone and still will not recognize a computer connection.
Would love to root and hold on to this thing for at least a little longer, so my last thought is to ask if it's possible to root this device without a computer connection. From what I've read through on some other forum threads it's possible with some phones. I'm hoping this one can manage it.
Thanks, in advance.
Click to expand...
Click to collapse
I would make sure that you have the appropriate drivers installed first.

jco23 said:
I would make sure that you have the appropriate drivers installed first.
Click to expand...
Click to collapse
Drivers not necessary. I was able to plug into, and connect with, no less than four different computers at work and home on a regular basis for approx. 1 yr 10 months without ever having to install a driver, and I am quite sure that they didn't just download automatically (never saw that happen). Now I need one?
Operating systems on the computers have been Win XP, Win 7 Home and Win 7 Pro.
I suspect that its a physical issue inside the micro USB port in the phone thats the issue since no one has any other solutions.

elvisruns2000 said:
Drivers not necessary. I was able to plug into, and connect with, no less than four different computers at work and home on a regular basis for approx. 1 yr 10 months without ever having to install a driver, and I am quite sure that they didn't just download automatically (never saw that happen). Now I need one?
Operating systems on the computers have been Win XP, Win 7 Home and Win 7 Pro.
I suspect that its a physical issue inside the micro USB port in the phone thats the issue since no one has any other solutions.
Click to expand...
Click to collapse
perhaps you already the drivers and now there has been update. just saying, won't hurt until you try it. computers can be finicky that way sometimes.
For what it is worth, here are my steps:
phone settings: USB debugging enabled; ask on connection (when connected, place phone in "mass storage")
PC settings: download/install all samsung drivers applicable with this phone; reboot computer; use OEM cable only
then, follow steps from the rooting thread.
also, do you have an SDcard? if not, that could be an/the issue (either you need one, or the one you have is corrupted). often times, my computer will ask me to repair my sdcard - I usually hit no. after plugging it in, give it at least 5 minutes to secure a connection.
hope this helps.

I know that I had to, for whatever reason, manually download & install the drivers for my Win7 system before I could fully connect my phone to computer. Had similar issues with Motorola phones and ASUS T300T tablet. Windows always works? Not in my experience and I do this for a living (computers). :banghead:
Sent from my SCH-I510 using xda app-developers app

Sorry guys - I've tried all of that. With SD card in, with it out, with battery in, battery out, sim card in/out. Literally every variant.
And the great thing is - show stopper here - I went to the Samsung website to download a driver a few weeks back, and the driver does not install correctly!! It just won't install - poops out somewhere (driver not installed properly message). Tried this on one Win 7 computer and one with XP. With firewalls on and off. It's like Samsung doesn't have their you-know-what together.

Nexus 5 Is not seen on PC!

For some reason, my N5 can't be seen on my PC. It doesn't show up in device manager, and the phone itself doesn't prompt me for any kind of connection (mtp for example). I think its a driver issue, does anyone know a way to help?
Sent from my Nexus 5 using xda app-developers app

Same thing with me. But I screwed something up.. I was having trouble with the drivers so I used the first guide on theandroidsoul that was posted in the stickied how to unlock the bootloader thread. After I uninstalled the driver in device manager on my win7 computer like it says in step 3 of the guide my computer no longer detects my nexus5 or nexus4. They both charge but they aren't listen in device manager/no connection sound when I plug them in.
I have restarted my computer a few times. Made sure usb debugging was on in the developer options.Toggled MTP on and off. I also checked on another computer that it wasn't the usb cable.

Same here! anyway to get those old drivers back?

FirePoncho86 said:
For some reason, my N5 can't be seen on my PC. It doesn't show up in device manager, and the phone itself doesn't prompt me for any kind of connection (mtp for example). I think its a driver issue, does anyone know a way to help?
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
FirePoncho86 said:
Same here! anyway to get those old drivers back?
Click to expand...
Click to collapse
Okay now this is weird. Anyone reading this must think I'm and idiot. I know for sure it wasn't working before. I used 3 different usb cables on both n4 and 5. I wiggled them and held them in place leaning in different directions just in-case the usb male end wasn't making the connection. I just tried the n4 one more time and it worked, then tried the n5 and that worked too.

AndrewJohansen said:
Okay now this is weird. Anyone reading this must think I'm and idiot. I know for sure it wasn't working before. I used 3 different usb cables on both n4 and 5. I wiggled them and held them in place leaning in different directions just in-case the usb male end wasn't making the connection. I just tried the n4 one more time and it worked, then tried the n5 and that worked too.
Click to expand...
Click to collapse
pfm

this is what i did to fix mine
first i uninstall all drivers
went to device manager when i had my nexus 5 hooked up and it show nexus 5 with a exclamation mark so i uninstall.but usb debug has to be on.
now disconnect phone and turn usb debugging off .
after u do that connect phone and click on storage and click on 3 dots on corner and select mtp and drivers shoud install and it should work.
its all i did. keep trying.after uninstalling drivers reboot pc too.

littlegreenalien said:
this is what i did to fix mine
first i uninstall all drivers
went to device manager when i had my nexus 5 hooked up and it show nexus 5 with a exclamation mark so i uninstall.but usb debug has to be on.
now disconnect phone and turn usb debugging off .
after u do that connect phone and click on storage and click on 3 dots on corner and select mtp and drivers shoud install and it should work.
its all i did. keep trying.after uninstalling drivers reboot pc too.
Click to expand...
Click to collapse
I tried this a couple of times! PTP but MTP isnt...

If anyone was playing around with NRT or other similar tool kits & had universal USB drivers installed to unlock, install custom recoveries & root, that could've "wrecked" other drivers & settings on it (Windows 7 ??) - one way to restore the connectivity to the N5 is to use MS's System Restore, go back to the earlier date - it should be successful restoration after it finished & reboot. Strange & hard to explain, but it worked & it was too late at night for me while helping out to work the logics behind it. The laptop normally see the N5 upon usb cable plugging in & open with the prompt to read the folders & files.
No matter what, usb debugging off & on, it was no good - only recognize the N5 when switched to Camera (PTP) mode & can only see 2 folders, normally - MTP or Media Device is the default setting & all the "SD" folders visible ...
Once reconnecting via usb cable, let it sit for 1 or 2 minutes so that the drivers can "wake" up and install & recognize the device(s).
Grrrrr, upon further checking with my old faithful HTC, the desktop OS seemed to have "corrupted" the USB drivers and now it is only reading it as a Removable Drive & not as HTC device.
I would go back & follow Littlegreenalien's steps to see what happen and then attempt a System Restore, time to brew up some coffee this weekend & deal with this minor challenge. Wondering if it's the new KitKat thing - and, sidenote, both N7 (2012) and N5 are generating random bug reports even on rooted stock rom & kernel. :cyclops:

Didn't think of a system restore! Man that's a good idea, I'll try it when I get home. My N5 also generated a bug report around when I was trying to fix this problem!
Sent from my Nexus 5 using xda app-developers app

littlegreenalien said:
this is what i did to fix mine
first i uninstall all drivers
went to device manager when i had my nexus 5 hooked up and it show nexus 5 with a exclamation mark so i uninstall.but usb debug has to be on.
now disconnect phone and turn usb debugging off .
after u do that connect phone and click on storage and click on 3 dots on corner and select mtp and drivers shoud install and it should work.
its all i did. keep trying.after uninstalling drivers reboot pc too.
Click to expand...
Click to collapse
This was the answer for me as well. All android drivers need to be uninstalled, then let the computer detect the N5 and install drivers
Sent from my Nexus 5 using Tapatalk 4

FirePoncho86 said:
Didn't think of a system restore! Man that's a good idea, I'll try it when I get home. My N5 also generated a bug report around when I was trying to fix this problem!
Click to expand...
Click to collapse
Let us know how it turned out, look at Window's Control Panel, do you see Portable Devices & under it, it should say Nexus 5, and click it to see the drivers (total of *.dll's and *.sys on my W7 Ultimate 32-bits OS)
Now that everything has been restored, "Auto Play" popped up after a pause of few seconds with usb making connections. Rebooted the laptop & now it's seeing the HTC again after auto reinstall drivers.
Just in case anyone, off-topic slightly, if anyone is playing with their Nexus 7 sideloading KitKat & small OTA patch, you should also see Android Device under the Control Panel & the Google Nexus 7 ADB Interface - with USB Debug enabled. But, with the Nexus 5 connected, it is showing "Google Nexus 4 ADB Interface" while showing it as N5 under Portable Devices ... what the heck !
I'm going to leave it alone for the time being, if it ain't broke & is working, leave it alone & let it be. Call me lazy, TGIF - not going to go thru the routines of uninstalling drivers, rebooting & all that and ruin the webcam, camera & other usb drivers loaded on the laptop. I can run ADB and Fastboot commands, etc. just fine now.

The simplest and shortest way to connect google nexus5 with PC as MTP(Media device)
FirePoncho86 said:
For some reason, my N5 can't be seen on my PC. It doesn't show up in device manager, and the phone itself doesn't prompt me for any kind of connection (mtp for example). I think its a driver issue, does anyone know a way to help?
Sent from my Nexus 5 using xda app-developers app
Click to expand...
Click to collapse
When I plugged it, there wasn't any yellow exclamation mark within Device Manager. So for me, the drivers were OK. But the device was not listed within my Eclipse DDMS. After a little bit of searching, it was just an option to change in the device settings. By default, the Nexus 5 USB computer connection is in MTP mode (Media Device).
What you have to do is:
Unplug the device from the computer
Go to Settings -> Storage.
In the ActionBar, click the option menu and choose "USB computer connection".
Then select Media device(MTP) or Camera(PTP) based on your requirement...
Plug the device and you should have a popup on the device allowing you to accept the computer's incoming connection..
I hope this will help!

[Q] Nexus 5 not connecting to computer (usb), does not show in device manager

Hi,
I would like to see if I can get anyones assistance with solving my problem. I have lost the ability to connect my Nexus 5 to my computer via USB. I had previously been able to connect the phone without any problems.
Connecting my phone to PC charges the phone but no drivers are loaded, nothing changes in device manager and I cannot see a change in windows explorer to view the memory card.
So far I have tried the following:
searches on various sites
rebooting phone, starting in safe mode, wiping all data, performing a hard reset
connecting other phones to usb cable to check that it is not a charge only cable, also trying several other USB cables
connecting phone to other computers
connecting other phones (HTC) to load drivers (then uninstalling drivers)
displaying all hidden devices in device manager and removing all drivers that resemble something to do with mobile phones
uninstalling programs I no longer require on the PC
using "wugs nexus root toolkit" to uninstall and re-install drivers
checking & unchecking MTP, PTP, developer options, USB debugging in various combinations to elicit a response from the computer.
I have also tried to visually check the connections of the USB port on the phone wondering is there is a break but I cannot see very well.
does anyone have any further suggestions to get this phone connected to a PC?
my only last thought is to attempt to open the phone and check the resistance of the plug connections.

Have you tried enabling and disabling usb debugging while plugged in?
Sent from my Nexus 5 using Tapatalk

I just did it, no change in Device manager or explorer

tropicalchills said:
I just did it, no change in Device manager or explorer
Click to expand...
Click to collapse
Are you sure you're using a data usb cable and the usb port is good?

Same Issue
same thing happened to me today when i connected the device to PC.
Mine says unknown device on PC under other devices. so i hope my USB port is ok.but im not using the original SUB cable. i wonder that's is the issue. but it didn't bother me until today. my original cable is at my friend's house.
Tried updating drivers manually. But following error message occurs once i select the drivers folder and hit ok.
Windows was unable to install your unknown device
Please help.

so, not really a solution but while at work my phone fell on to a nice rock cracking the screen. I have replaced the phone and the new phone connects to the pc fine, drivers come up without a problem (I will put this down to a fault with the phone)
Thank you for your assistance

[Q] USB works in fastboot but not ADB - not a driver issue

Anyone having an idea why my (only 3 months old) Nexus 5 no longer connects in ADB mode? Fastboot works, in Windows and Linux. But ADB does not. In Linux dmesg, I can't see the device connecting which was different yesterday: I could at least see the device connecting but then within a blink of a second disconnecting again. In Windows, I'd hear the usual USB connect sound but the device does not show up in the device manager.
Other issues I discovered yesterday:
* connecting the device after fully booted puts it into "permanent charging mode", read: the thunderbolt icon does not disappear. It says "charging (USB)" in the battery stats even when disconnected
* connecting the device while turned off, then booting, puts it into "permanent no-charging mode", read: the thunderbolt icon never appears, the battery does not charge
In both "modes" connecting to a wall charger changes nothing. A full reboot is needed. Then it works flawlessly with the wall charger unless I dare to use a PC for charging, that's when it returns into sticking with the thunderbolt icon. It will fully charge while in this state until I disconnect the device. Then I'm stuck with continuous discharging until rebooted. This is reproducable in recovery mode to where - according to dmesg - it acts the same.
Today, however, this has changed: It even does not charge the phone when connected to the PC.
But back to the core of the problem: I can no longer connect with ADB. This worked before. And I'm using Linux. So it is none of those strange Windows drivers problems. I tried different cables (including the yet unused original one), different ports, without and with USB hub. So it's probably also no cable issue. And anyways: All cables and ports I tried worked previously.
Somehow I feel it might be a software issue within the phone (and I hope its not a hardware issue) because it works without problems in fastboot mode. The only problem to maybe resolve the issue is either reflashing factory in fastboot (which would work) or sending in for repair. Both options I do not like because I cannot backup my partitions.
BTW: The device is stock ROM, no root.
Anyone heard of such problems?

What's the output of 'lsusb' with device plugged in?
Is "Developer Options > USB debugging" option on?
What's the adb version that you're using on the PC?

It's there in fastboot, and gone when starting recovery or booting normally.
Sent from my Nexus 5 using XDA Free mobile app

hurikhan77 said:
It's there in fastboot, and gone when starting recovery or booting normally.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Huh?
Please, answer the questions.

Sorry, only saw the first question. USB debugging is on but should make no difference to see the device in sideload mode. Adb is of course the latest version, updated yesterday from Google SDK.
Plugging the device in shows nothing in dmesg as I would expect when the device is fully booted, no matter if USB debugging is on or off. Tried both mtp and ptp modes. The only outcome is that it no longer accepts the wall charger for charging from this point on until rebooted. It looks like USB freezes internally in the phone as soon as USB data is to be negotiated. It works in fastboot however so the port circuit itself does not seem to be broken.
I just discovered it because I wanted to sideload 5.1. I think the issue had been there for some time as it would explain why I found my smartphone fully charged but turned off sometimes when connected to a PC previously and to a charger later.
Sent from my Nexus 5 using XDA Free mobile app

hurikhan77 said:
It's there in fastboot, and gone when starting recovery or booting normally.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Have a look here:
http://forum.xda-developers.com/google-nexus-5/help/diagnosing-usb-driver-adb-issues-windows-t2514396/post59420668#post59420668
Never mind, I see you are in Linux

joegestes said:
Have a look here:
http://forum.xda-developers.com/goo...es-windows-t2514396/post59420668#post59420668
Click to expand...
Click to collapse
Sorry, not Windows, not a driver issue. I need to get the device to show up on the bus when connected. By the way: in Windows it doesn't work either. Same behavior, different system: yesterday I still got the USB detection sound but nothing in device manager, today even the sound does not play. And I can no longer charge the phone after this incident until the phone is rebooted. It only works in fastboot mode - in Windows and Linux. So this strange behavior is even not OS related or tied to a specific PC.
BTW: I'm familiar with the driver issue and know how to fix and handle it. This is another issue.
Sent from my Nexus 5 using XDA Free mobile app

Are you running stock kit kat or LP?
Is your bootloader ulocked? if yes which recovery?
If you are Stock and Locked and you are certain its not driver related,
it seems like a wipe/factory reset or clean factory re flash is your only option. or just unlock the bootloader and it will wipe everything.
or
you might try using fastboot to erase the cache and refalsh the factory cache.img. Maybe it would help

hurikhan77 said:
Sorry, only saw the first question. USB debugging is on but should make no difference to see the device in sideload mode. Adb is of course the latest version, updated yesterday from Google SDK.
Plugging the device in shows nothing in dmesg as I would expect when the device is fully booted, no matter if USB debugging is on or off. Tried both mtp and ptp modes. The only outcome is that it no longer accepts the wall charger for charging from this point on until rebooted. It looks like USB freezes internally in the phone as soon as USB data is to be negotiated. It works in fastboot however so the port circuit itself does not seem to be broken.
I just discovered it because I wanted to sideload 5.1. I think the issue had been there for some time as it would explain why I found my smartphone fully charged but turned off sometimes when connected to a PC previously and to a charger later.
Sent from my Nexus 5 using XDA Free mobile app
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Man, you might be facing a hw problem.

beekay201 said:
Man, you might be facing a hw problem.
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True:good:
I could be a bad
mini usb/ battery port. like in this thread http://forum.xda-developers.com/nexus-4/help/nexus-4-computer-t3048983

joegestes said:
True:good:
I could be a bad
mini usb/ battery port. like in this thread http://forum.xda-developers.com/nexus-4/help/nexus-4-computer-t3048983
Click to expand...
Click to collapse
beekay201 said:
Man, you might be facing a hw problem.
Click to expand...
Click to collapse
Thanks guys... I'll try replacing the USB charger board. It seems pretty easy and does not cost too much. But first I probably wait for the 5.1 OTA to really arrive "over the air" and see if anything changes. Hope it will be here soon. I'll report back about the outcome.

Meanwhile it shows up on the bus again but instantly disconnects:
Code:
[27406.850676] usb 4-1.6.6: new high-speed USB device number 14 using ehci-pci
[27406.948794] usb 4-1.6.6: New USB device found, idVendor=18d1, idProduct=4ee1
[27406.948797] usb 4-1.6.6: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[27406.948799] usb 4-1.6.6: Product: Nexus 5
[27406.948800] usb 4-1.6.6: Manufacturer: LGE
[27406.948801] usb 4-1.6.6: SerialNumber: 065c07e0xxxxxxxx
[27407.933139] usb 4-1.6.6: USB disconnect, device number 14
After this, the thunderbolt icon in the notification bar stays. The device notifier in Linux shows up for a short time and I think it showed MTP is available. Now I have to reboot in order to do anything with the USB port of my phone - it won't even charge until I reboot.