adb not finding device

[Bram Stolk]

I bought a PIPO M1 tablet, with Android 4.1.1 

I've enabled 'USB Debugging'.

It even shows a notification 'USB debugging connected' when I plug it into my Mac via USB.

But adb will simply not see the device.

I know that the USB connection itself is OK: because I can browse my tablet as a mass storage device from my Mac.

Here is the output I get from adb, with verbose logging:

$ ADB_TRACE=all adb devices

system/core/adb/adb.c::main():Handling commandline()

system/core/adb/adb_client.c::adb_query():adb_query: host:devices

system/core/adb/adb_client.c::_adb_connect():_adb_connect: host:version

system/core/adb/transport.c::writex():writex: fd=3 len=4: 30303063 000c

system/core/adb/transport.c::writex():writex: fd=3 len=12: 686f73743a76657273696f6e host:version

system/core/adb/transport.c::readx():readx: fd=3 wanted=4

system/core/adb/transport.c::readx():readx: fd=3 wanted=4 got=4

4f4b4159 OKAY

system/core/adb/adb_client.c::_adb_connect():_adb_connect: return fd 3

system/core/adb/adb_client.c::adb_connect():adb_connect: service host:devices

system/core/adb/transport.c::readx():readx: fd=3 wanted=4

system/core/adb/transport.c::readx():readx: fd=3 wanted=4 got=4

30303034 0004

system/core/adb/transport.c::readx():readx: fd=3 wanted=4

system/core/adb/transport.c::readx():readx: fd=3 wanted=4 got=4

30303164 001d

system/core/adb/adb_client.c::_adb_connect():_adb_connect: host:devices

system/core/adb/transport.c::writex():writex: fd=3 len=4: 30303063 000c

system/core/adb/transport.c::writex():writex: fd=3 len=12: 686f73743a64657669636573 host:devices

system/core/adb/transport.c::readx():readx: fd=3 wanted=4

system/core/adb/transport.c::readx():readx: fd=3 wanted=4 got=4

4f4b4159 OKAY

system/core/adb/adb_client.c::_adb_connect():_adb_connect: return fd 3

system/core/adb/adb_client.c::adb_connect():adb_connect: return fd 3

system/core/adb/transport.c::readx():readx: fd=3 wanted=4

system/core/adb/transport.c::readx():readx: fd=3 wanted=4 got=4

30303030 0000

system/core/adb/transport.c::readx():readx: fd=3 wanted=0

system/core/adb/transport.c::readx():readx: fd=3 wanted=0 got=0

 

List of devices attached 

[Bram Stolk]

It turns out that new devices are not recognized by adb.

The fix is to add the USB Vendor ID to ~/.android/adb_usb.ini

For my PIPO's rockwell chip, this is 0x2207

You can find yours with:

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