Bus 002 Device 005: ID 2c7c:0121
Bus 002 Device 023: ID 046d:c016 Logitech, Inc. Optical Wheel Mouse
Bus 002 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The first one belongs to the GSM module but I cannot use it or communicate with it whatsoever.
Linux (3.14.52) armv7l Debian 8.4
Any response is appreciated, thanks in advance.
Did you added Kernel related drivers and enabled Kernel related options, rebuild Kernel and bootet from it as described here
Yes, I suppose the problem is, modem being rejected due to insufficient bus power, I am bypassing the bus power protection by using
echo "1" > /sys/bus/usb/devices/2-1.4/bConfigurationValue, (output: new config #1 exceeds power limit by 400mA) but still not working. This usually helps when the bus is short on power, but not in this case.
lsmod | grep option
can you see the kernel module option?