ERROR: mbim message timeout - (using umbim on OpenWRT)

Aleksander Morgado aleksander at
Thu Mar 12 02:04:26 PDT 2015

Hey Peter,

On Thu, Mar 12, 2015 at 9:17 AM, Peter Gerten
<peter.gerten at> wrote:
> Devices:
> - Sierra Wireless EM7345
> - Huawei ME936
> - Sierra Wireless MC7355
> Software:
> - OpenWRT (latest git: r44651)
> - Kernel 3.14.34
> Only the first MBIM command to any of this modems works, after that it
> apears to be stalled and results in a "ERROR: mbim message timeout".
> This obviously make the network scripts fail, as they issue multiple umbim
> commands in sequence to connect to the network.
> If I do a usb reset using the "usbreset" tool, I can again send one MBIM
> command before getting timeout.
> Test command: "umbim -d /dev/cdc-wdm0". Sometimes even two command in
> sequence work - I was not able to make this consistently reproducible
> though.
> This happens on my RT5350 target as well as on an x86 OpenWRT target in
> VirtualBox. It does not seems USB host related.

umbim isn't based on libmbim, so this is not the proper place to ask.
You should ask in the openwrt mailing list, as they are the ones who
wrote it.

Anyway, maybe someone reading this mailing list may help?

> All of the modem work fine on Ubuntu 14.04 with ModemManager.

Well, then that's good news for libmbim :)


More information about the libmbim-devel mailing list