Modules 3G Sierraless MC7710 doesn't work

IoT Modules MC/EM Series
1

Hello everybody,

Networking manager could not recognize Sierraless MC7710 wireless card although I can see it with an ifconfig -a. I am on Ubuntu 13.10.

I tried different commands

uname -r

3.11.0-17-generic

lsusb:

Bus 001 Device 002: ID 1199:68a3 Sierra Wireless, Inc. MC8700 Modem

usb-devices:

T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  2 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1199 ProdID=68a3 Rev=00.06
S:  Manufacturer=Sierra Wireless, Incorporated
S:  Product=MC7710
S:  SerialNumber=358178041213754
C:  #Ifs= 6 Cfg#= 1 Atr=e0 MxPwr=0mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra
I:  If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra
I:  If#= 7 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=sierra_net

dmsg | grep 1-1

[    1.684038] usb 1-1: new high-speed USB device number 2 using ehci-pci
[    1.817692] usb 1-1: config 1 has an invalid interface number: 7 but max is 5
[    1.817702] usb 1-1: config 1 has no interface number 5
[    1.819686] usb 1-1: New USB device found, idVendor=1199, idProduct=68a3
[    1.819694] usb 1-1: New USB device strings: Mfr=3, Product=2, SerialNumber=4
[    1.819700] usb 1-1: Product: MC7710
[    1.819706] usb 1-1: Manufacturer: Sierra Wireless, Incorporated
[    1.819711] usb 1-1: SerialNumber: 358178041213754
[    4.648877] sierra 1-1:1.0: Sierra USB modem converter detected
[    4.685581] usb 1-1: Sierra USB modem converter now attached to ttyUSB0
[    4.685687] sierra 1-1:1.1: Sierra USB modem converter detected
[    4.686324] usb 1-1: Sierra USB modem converter now attached to ttyUSB1
[    4.686412] sierra 1-1:1.2: Sierra USB modem converter detected
[    4.687094] usb 1-1: Sierra USB modem converter now attached to ttyUSB2
[    4.687187] sierra 1-1:1.3: Sierra USB modem converter detected
[    4.693067] usb 1-1: Sierra USB modem converter now attached to ttyUSB3
[    4.693167] sierra 1-1:1.4: Sierra USB modem converter detected
[    4.693876] usb 1-1: Sierra USB modem converter now attached to ttyUSB4
[    4.794496] sierra_net 1-1:1.7 wwan0: register 'sierra_net' at usb-0000:00:1a.7-1, Sierra Wireless USB-to-WWAN Modem, 1a:04:fa:80:01:07
[    5.336923] hid-generic 0003:413C:2011.0003: input,hidraw2: USB HID v1.10 Keyboard [Dell Dell Multimedia Pro Keyboard] on usb-0000:00:1d.1-1.1/input0
[    5.353038] hid-generic 0003:413C:2011.0004: input,hidraw3: USB HID v1.10 Device [Dell Dell Multimedia Pro Keyboard] on usb-0000:00:1d.1-1.1/input1

rfkill list:

0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no

ls -l /dev/serial/by-id:

lrwxrwxrwx 1 root root 13 Mär  3 14:26 usb-Sierra_Wireless__Incorporated_MC7710_358178041213754-if00-port0 -> ../../ttyUSB0
lrwxrwxrwx 1 root root 13 Mär  3 14:26 usb-Sierra_Wireless__Incorporated_MC7710_358178041213754-if01-port0 -> ../../ttyUSB1
lrwxrwxrwx 1 root root 13 Mär  3 14:26 usb-Sierra_Wireless__Incorporated_MC7710_358178041213754-if02-port0 -> ../../ttyUSB2
lrwxrwxrwx 1 root root 13 Mär  3 14:26 usb-Sierra_Wireless__Incorporated_MC7710_358178041213754-if03-port0 -> ../../ttyUSB3
lrwxrwxrwx 1 root root 13 Mär  3 14:26 usb-Sierra_Wireless__Incorporated_MC7710_358178041213754-if04-port0 -> ../../ttyUSB4

Connection to the device via minicom on ttyUSB2 and ttyUSB3 fails and even make the terminal unresponsive (must close the tab).
So I am not able to switch from DirectIp to QMI.

I also tried to install driver from mycusthelp (mycusthelp.net/SIERRAWIRELESS/_c … spx?aid=44) but it doesn’t compiled.

Any idea ?

2

Hi,
Same problem here on Debian kernel 3.4.0
Please anyone could help ?

Regards,

C2A team

3

Nobody ?

4

Hi,

Was there any activity before module entered into this state?

5

Hi Rex_alex !
No the module has never shown activity. We have two MC7710 on two pc with Debian kernel 3.4.0, both have the same problem. Minicom and Cutecom can open ttyUSB3, but they fail to send AT commands. They even stay unresponsive, frozen, and we have to kill the process.

Regards,

C2A team

6

Hi,

For me it works now, I updated the firmware with the windows tools.

7

Indeed, I did the same, and now it works perfectly.

Thanks for your help !

8

Hiya All.

One thing to be aware of with minicom is that by default it sends a number of modem initialisation commands when a device is opened or closed. I’ve had issues with this confusing the modem in the past, and now I make sure I edit the connection profile to remove all these command strings.

ciao, Dave