One questions:

When the HuaWei EM660 CDMA card is already inserted into PC, that is
$ls /dev/ttyUSB*
/dev/ttyUSB0  /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3  /dev/ttyUSB4
the /dev/ttyUSB1  /dev/ttyUSB2  /dev/ttyUSB3  /dev/ttyUSB4 for CDMA USB
modem of EM660

if the card is pluged out, then plugged into the PC,
the NetworkManger can detect, and report a new D-bus device, for examples,
/org/freedesktop/NetworkManager/Devices/2.

But if the reboot the PC, the card is still in the PC, no the action of plug
out and in,
NetworkManger cannot the produce the D-BUS
/org/freedesktop/NetworkManager/Devices/2.

also
$sudo usb_modeswitch -v 012d1 -p 1404 -P 1404
$modprobe usbserial vendor=0x12d1 produce=xxxxx
has done, it is not useful.

Why? If the action of plugging in and out is not done, how can write the
script to realize it to produce card D-bus
/org/freedesktop/NetworkManager/Devices/2 ?

Thanks
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