Hi,
I happen to have two Huawei USB mobile broadband modem devices from two
different providers that act like this when plugged in simultaneously
into my machine currently running Linux 2.6.31.6:
Bus 001 Device 007: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem / E270 HSDPA/HSUPA Modem
Bus 002 Device 008: ID 12d1:1003 Huawei Technologies Co., Ltd. E220 HSDPA Modem / E270 HSDPA/HSUPA Modem
usb 1-1: generic converter now attached to ttyUSB0
usb 1-1: generic converter now attached to ttyUSB1
usb 2-2: generic converter now attached to ttyUSB2
usb 2-2: generic converter now attached to ttyUSB3
That's all acceptable. However, the last one plugged in overrides the
previous one's /dev/serial/by-id/ entries because both of them use the
same names:
usb-HUAWEI_Technology_HUAWEI_Mobile-if00-port0
usb-HUAWEI_Technology_HUAWEI_Mobile-if01-port0
Is there any way some sort of a more unique identifier could be made for
these so that I can keep using /dev/serial/by-id/ rather than semi-random
/dev/ttyUSB* numbers? Especially because these two devices are really
different, one is model E180 and the other is model E160, they have
different SIM cards/ISPs so they must have different IMEIs, etc.
I also have an internal device like this that creates these kinds of
symlinks:
usb-Ericsson_Ericsson_F3507g_Mobile_Broadband_Minicard_Composite_Device_3541430202471020-if01
usb-Ericsson_Ericsson_F3507g_Mobile_Broadband_Minicard_Composite_Device_3541430202471020-if03
usb-Ericsson_Ericsson_F3507g_Mobile_Broadband_Minicard_Composite_Device_3541430202471020-if09
That 16-digit number looks good... it seems to come from the "iSerial"
variable (lsusb). Sadly this variable is missing on the two Huawei devices.
Can something be done?
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