Unable to detect Android phone in Eclipse

Question

I have been developing in Android for approximately two months now. Yesterday, my eclipse starting giving me the error:

The connection to adb is down, and a severe error has occured.
You must restart adb and Eclipse.
Please ensure that adb is correctly located at 'C:\android-sdks\platform-tools\adb.exe' and can be executed.

So I followed the steps for restarting adb located here.

Eclipse now gives me:

Android Launch!
adb is running normally.

My phones, however, are not being detected. I have a Galaxy S2 running Android 2.3.4 stock, and a S2 rooted running 4.0.3. Neither are being detected. On my home pc, both work fine in eclipse.

I have tried restarting my laptop, and even tried killing adb and eclipse and retrying the steps above. But it still won't detect my phones. My emulators are working fine. It is worth noting that the severe error has occurred seems to come back when I restart my laptop.

If you run adb devices, do you have empty list, or not empty, but with offline devices? — POMATu, Jun 19 '12 at 07:26
Settings > Applications > Development > allow debugging, i beleive — Archie.bpgc, Jun 19 '12 at 07:40
@SpK: I dont have Kies, but i find it extremely unusual that it would work for 2 months then suddenly stop. I have had no system changes whatsoever — aggregate1166877, Jun 19 '12 at 07:45

score 2 · Accepted Answer · answered Jun 19 '12 at 07:26

2

Install the Device driver provided by samsung in your laptop.

You can install Samsung kies it also installs the device driver

answered Jun 19 '12 at 07:26

I'll try Kies, but i find it extremely unusual that it would work for 2 months then suddenly stop. I have had no system changes whatsoever. – aggregate1166877 Jun 19 '12 at 07:41
Try to reboot your device and connect it to your PC – Jun 19 '12 at 07:47
Also, try to install this driver http://innovator.samsungmobile.com/cms/cnts/knowledge.detail.view.do?cntsId=9480&platformId=1 – Jun 19 '12 at 07:48
1

Samsung Kies seems to have done the trick. I do wish I knew what caused this though. – aggregate1166877 Jun 19 '12 at 08:21

score 0 · Answer 2 · answered Jun 19 '12 at 07:37

0

Install driver for your device if you already have driver means try to update your driver manually.

answered Jun 19 '12 at 07:37

machu

111
2
11

score 0 · Answer 3 · answered Jun 19 '12 at 08:05

0

Are you using the samsung usb cable? try to use a non-Samsung one, I had a very similar issue and it worked for me.

answered Jun 19 '12 at 08:05

omoling

151
7

Unable to detect Android phone in Eclipse

3 Answers3