Why when my phone LG GT540 is running and seen by ADB after bootup it disconnects (not from PC just from ADB, as PC still can see it it Device Manager) after few seconds after bootup sequence?

The problem is occuring only with GT540, tested other device - HTC - works fine.

The key could be USB drivers, but tried many of them official and handmade.

Also I've tried running phone in "Recovery" or "Safe" Mode - when LG firmware updated my phone via USB with no major problems with connection, hovewer I cant use ADB over this "Safe" mode, can't I?

  • Have you enabled USB Debugging in the Settings? Nov 27, 2012 at 9:46
  • Yes, of course.
    – user24162
    Nov 27, 2012 at 9:46
  • What device is it detected as after boot? Mass storage? Generic device? Which Windows version? Nov 27, 2012 at 9:49
  • WIndows 7 64b, i47.tinypic.com/1hufy1.gif (tis undetected device is probably a SD Card)
    – user24162
    Nov 27, 2012 at 9:51

1 Answer 1


Some people have had their device turn on the mass storage mode by itself.

Verify that you haven't enabled Mass storage only mode in Settings -> SD Card & storage -> Mass storage only, then reconnect & restart adb daemon.

  • Why to restart adb deamon?
    – user24162
    Nov 27, 2012 at 9:58
  • To verify it's listening actively on the port. Nov 27, 2012 at 10:02
  • It wont help...
    – user24162
    Nov 27, 2012 at 10:13
  • Actually after reboot of PC it worked! Thanx!
    – user24162
    Nov 27, 2012 at 10:17

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