ADB device offline

[claymeclay]

New USB Cable

I normally don't post but hats of to the gents who figured out that the usb cable for samsung SUCKS!!! I changed the usb and everything worked as planned. WOW what does that say about Samsung.

 

[flaneur]

Ok I almost pulled my hair out, but I found the problem.

For some reason, ADB does not work with the Samsung USB cable that came with the Captivate.

I switched to another USB cable and it works just fine.

Man, I really thought I was going crazy.

Same here, with my HTC Dream. I was using an "unbranded" cable, from one of my usb hdd, and my htc dream was randomly online and offline (mostly offline): with a different cable it's 100% online

Thanks for sharing!

 

[DHR039]

I had the same problem. Solved by just connecting to the USB from the back of the PC. Connecting to the USB port on front of the PC case gives 'offline' error. I have an ASUS P5B-MX/WiFi i946GZ motherboard. Device is Samsung Galaxy S Vibrant, using manufacturer's USB cable.

 

[acdbx]

same problem with me. switching usb ports works, but the problem comes back. i'm now down to my last port... wtf.

 

[TheYar]

I had the same problem. Solved by just connecting to the USB from the back of the PC. Connecting to the USB port on front of the PC case gives 'offline' error. I have an ASUS P5B-MX/WiFi i946GZ motherboard. Device is Samsung Galaxy S Vibrant, using manufacturer's USB cable.

Agreed, typically this problem occurs for me any time I use a USB port that isn't wired directly to the motherboard but instead passes through a hub of some sort. This can include using USB ports on a docking station, on the front of a tower, on a peripheral like a monitor or keyboard, on an external USB hub, etc. Finding the computer's "core" usb ports (like on the side of a laptop or on the back of a tower) is key. Not sure how using different cables plays into this but it's probably related somehow.

 

[balwinder_singh]

thanks bro i disconnected internet and it work

 

[TomTcom]

I'm writing to say that so far the cable was the issue. Ironically I used the stock cable on an XP machine with no issues. I have the Fascinate 2.2 Root and so far using a BlackBerry cable, of all things, without issue. This thread helped me. Thanks!!!

 

[Jan_1]

Thanks for your hint, I faced exactly the same problem.

 

[mabantotski]

I have had no problems using the stock cable on my Laptop and work PC, both are Win 7 32bit. The same cannot be said for my my main home PC which is Win 7 64bit. Neither the stock cable nor an after market cable worked with ADB.

For the 32bit OSes I installed the Kies software and the usb device gets installed correctly. for the 64bit OS, I installed the Kies software but could get the phone to connect correctly. I then tried to install the 64bit drivers that are floating around the web. The 64 bit drivers worked enough to get the phone connected to the PC but when I tried to query "adb devices" the phone would always appear as offline. I've tried several things: install/uninstall drivers and software on the PC, restart the PC and Phone, change cables. Nothing seems to help on Win 7 64bit.

It seems to me that there might be a bug in the 64bit driver, though I have no proof of a bug.

I am going to keep playing with the 64bit OS until i figure it out or get so annoyed a that I just give up.

I'll be using my Win 7 32 bit laptop until I get the 64bit PC to work.

I had the same problem with my G2 phone when trying to use the ADB. I installed the HTC Sync USB Driver on my 64bit Vista and when I used the ADB it tells me that my Device was offline. Tried to uninstall and reinstall the HTC Sync Software and it’s still the same. I also, tried to change the USB Cable using my Nokia Phone and it worked for a minute and then the Device went offline again. Then I look closely at my G2’s installed program and I noticed that I have a program called “HTC Sync.” So, I tried to uninstall my Windows HTC Sync programs and just left the HTC USB Drivers and everything works after that. The connection works flawlessly without any issues.

I guess the pre-installed HTC Sync software that came with my HTC G2 and the Windows Vista sync software must be incompatible with each other. The two programs don’t communicate with each other correctly and it is conflicting with the USB Driver.

 

[specter16]

adb device offline

unplug all devices and close all emulators
on cmd type

adb kill-server
then
adb start server

now plug in your device or start emulator
in cmd type

adb devices

now it's online... i hope

don't forget that in linux you must type ./adb in stead of adb

 

[b-eock]

You don't have to do ./adb if you have it added to your bashrc

 

[meagain]

adb device offline

I rebooted my phone and it was back online.

Sometimes we are overlooking the obvious :->



steph

 

[doej]

ADB device offline Android 4.2.2

After upgrading to Android 4.2.2 you need to authenticate your computer to use adb.
This is not supported with older adb versions, so update your SDK or toolkits to at least adb 1.0.30 to make it work.

More information: http://forum.xda-developers.com/showthread.php?t=2144709
Android SDK: http://developer.android.com/sdk/index.html


Sorry for abusing this zombie thread but it lists first on google and it should help people find the solution quicker.

 

[toutomoutochan]

1. I installed the kies drivers first and it would say offline when i checked the device through the cmd prompt.

2. I then installed the adb drivers and it then said the device was online.

3. i then rooted the phone and went on my way. i then tried it a second time and it said device offline.

4. nothing changed during this time except that i turned off debug mode, changed it to mass storage and plugged it back into the usb to transfer some files.

5. on returning to debug mode it no longer tells me the device is online. i have tried different USB ports as well.

6. i deleted the drivers, and reinstalled and it still says offline.

very frustrating.

I tried 3 different cables and it still said Offline, but turning off debugging and plugging it in again worked for me.

And I totally misread your post - I thought you had solved your problem this way. Well, it worked for me and I figured I'd let people know that it might be a valid solution.

I have a T-Mobile HTC Sensation running ICS 4.0 (not rooted).

 

[santacruzdz]

After upgrading to Android 4.2.2 you need to authenticate your computer to use adb.
This is not supported with older adb versions, so update your SDK or toolkits to at least adb 1.0.30 to make it work.

More information: http://forum.xda-developers.com/showthread.php?t=2144709
Android SDK: http://developer.android.com/sdk/index.html


Sorry for abusing this zombie thread but it lists first on google and it should help people find the solution quicker.

Thanks!! It worked for me!!

 

[fiddragon]

Thanks!! It worked for me!!

hi all,
I don't find any solution, i've tried all of yours but...nothing it always offline.
Can someone help me please !?