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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
