I am unable to connect to my new X20 boards via adb:
$ sudo adb devices -l
returns nothing when an X20 board is connected; the same works fine with my HiKey and DragonBoard CE boards.
For HiKey, I have the following magic incantations in the /etc/udev/rules.d/51-android.rules file on my host machine:
# fastboot protocol on HiKey
SUBSYSTEM=="usb", ATTRS{idVendor}=="18d1", ATTRS{idProduct}=="d00d", MODE="0666"
# adb/rndis protocol on HiKey
SUBSYSTEM=="usb", ATTRS{idVendor}=="12d1", MODE="0666", ENV{ID_MM_DEVICE_IGNORE}="1"
Is there similar magic for X20?