Hi,
I've recently bought Thinkpad x270 with Fibocom-L831EU WWAN module which is
MBIM device. If I try to use it on my Gentoo Linux (kernel 4.12.12, libmbim
1.14) it doesn't work.
The symptoms are the same as it was described in this mailing list earlier:
https://www.spinics.net/lists/linux-usb/msg158286.html (mbim-network and
mbimcli --connect complete successfully,
dhcpcd can't get IPv4 afterwards, I have EPIPE error in dmesg). However, no
solution was provided, so I look forward to your answer at your earliest
convenience.
PS: here's my probe to connect via mbimcli:
$ mbimcli -d /dev/cdc-wdm0 --connect="apn=yota.ru"
[/dev/cdc-wdm0] Successfully connected
[/dev/cdc-wdm0] Connection status:
Session ID: '0'
Activation state: 'activated'
Voice call state: 'none'
IP type: 'ipv4'
Context type: 'internet'
Network error: 'unknown'
[/dev/cdc-wdm0] IPv4 configuration available: 'address, gateway, dns'
IP [0]: '10.66.148.134/24'
Gateway: '10.66.148.1'
DNS [0]: '94.25.128.105'
DNS [1]: '94.25.128.97'
[/dev/cdc-wdm0] IPv6 configuration available: 'none'
$ mbimcli -d /dev/cdc-wdm0 --query-connection-state
[/dev/cdc-wdm0] Connection status:
Session ID: '0'
Activation state: 'deactivated'
Voice call state: 'none'
IP type: 'default'
Context type: 'none'
Network error: 'unknown'
As you can see, despite available IPv4 configuration and 'activated' state
after the first command, I have 'deactivated' activation state a few seconds
later and no internet connection.
Please let me know if I can provide more helpful information.
--
Sincerely yours,
Alexander Mikhalevich
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