On November 15, 2017 12:42:17 AM GMT+01:00, Alexander Mikhalevich <alex.mikhalevich@xxxxxxxxx> wrote: >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). If it is the same problem, then I believe it is fixed by https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/drivers/usb/class/cdc-wdm.c?h=linux-4.14.y&id=8fec9355a968ad240f3a2e9ad55b823cf1cc52ff But that was too late for 4.12 stable, so you might have to ask your distro to add it to their kernel. Bjørn -- 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