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ma2thieu

Member

Registered: 2011-06-20

Posts: 5

[SOLVED] No mobile connexion - Sierra EM7345

I'm trying to make the mobile broadband connection work on the new Thinkpad X1 Carbon 3rd gen.
But no matter what I can't connect to the modem.
I tested the SIM card in a phone, it works.

I have installed ModemManager and NetworkManager

# lsusb | grep Sierra
Bus 001 Device 002: ID 1199:a001 Sierra Wireless, Inc.

# lsmod | grep cdc
cdc_mbim               16384  0 
cdc_wdm                20480  2 cdc_mbim
cdc_ncm                28672  1 cdc_mbim
usbnet                 36864  2 cdc_mbim,cdc_ncm
cdc_acm                32768  0 
usbcore               200704  12 btusb,uvcvideo,ehci_hcd,ehci_pci,usbnet,cdc_mbim,cdc_acm,cdc_ncm,cdc_wdm,xhci_hcd,xhci_pci

# cat /sys/module/cdc_ncm/parameters/prefer_mbim 
Y

I can see the device :

# ls -l /dev/cdc*
crw------- 1 root root 180, 0 Apr 22 17:44 /dev/cdc-wdm0

but every command time out :

# mbimcli -d /dev/cdc-wdm0 --query-device-caps
error: couldn't open the MbimDevice: Transaction timed out

Last edited by ma2thieu (2015-04-24 12:56:25)

ma2thieu

Member

Registered: 2011-06-20

Posts: 5

Re: [SOLVED] No mobile connexion - Sierra EM7345

Well I'm not sure what I did but NetworkManager is now able to connect

# mbimcli -d /dev/cdc-wdm0 --query-device-caps
[/dev/cdc-wdm0] Device capabilities retrieved:
	      Device type: 'embedded'
	   Cellular class: 'gsm'
	      Voice class: 'no-voice'
	        Sim class: 'removable'
	       Data class: 'gprs, edge, umts, hsdpa, hsupa, lte'
	         SMS caps: 'pdu-receive, pdu-send'
	        Ctrl caps: 'reg-manual'
	     Max sessions: '8'
	Custom data class: 'unknown'
	        Device ID: '013937003830427'
	    Firmware info: 'FIH7160_V1.1_MODEM_01.1349.12'
	    Hardware info: 'XMM7160_V1.1_MBIM_GNSS_NAND_RE'

Leo_Testard

Member

Registered: 2015-08-01

Posts: 1

Re: [SOLVED] No mobile connexion - Sierra EM7345

Hi,

I've got an X240 Thinkpad with exactly the same 4G chipset, and I'm having exactly the same issue.
I can't get it to work... all mbimcli commands fail with this specific timeout error. I don't even know how to try with network-manager. I didn't see any option related to mobile broadband (I'm using nmtui).

Do you have some information about how you resolved this problem ?