# MC7710 issues with Windows or Lenovo X230

**URL:** <https://forum.sierrawireless.com/t/mc7710-issues-with-windows-or-lenovo-x230/8242>\
**Category:** MC/EM Series\
**Created:** [October 15, 2015, 8:45pm UTC](https://forum.sierrawireless.com/t/mc7710-issues-with-windows-or-lenovo-x230/8242 "2015-10-15T20:45:27Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![dl5162](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/dl5162/32/2169_2.png) [@dl5162](https://forum.sierrawireless.com/u/dl5162)\
**Post date:** [October 20, 2015, 9:03am UTC](https://forum.sierrawireless.com/t/mc7710-issues-with-windows-or-lenovo-x230/8242/3 "2015-10-20T09:03:17Z")

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> [@mars83](#):
>
> Hello again,  
> I installed again Ubuntu and dmesg shows me this:  
> [pastebin.com/DQjCBZ5V](http://pastebin.com/DQjCBZ5V)
> 
> [5.683145] cdc\_mbim 1-4:1.12: Unexpected error -71  
> [5.683261] usb 1-4: USB disconnect, device number 2  
> [5.683331] cdc\_mbim 1-4:1.12 wwan0: unregister ‘cdc\_mbim’ usb-0000:00:14.0-4, CDC MBIM  
> [9.911545] usb 1-4: new high-speed USB device number 3 using xhci\_hcd  
> [10.040893] usb 1-4: config 1 has an invalid interface number: 12 but max is 1  
> [10.040898] usb 1-4: config 1 has an invalid interface number: 13 but max is 1  
> [10.040900] usb 1-4: config 1 has an invalid interface number: 13 but max is 1  
> [10.040903] usb 1-4: config 1 has no interface number 0  
> [10.040904] usb 1-4: config 1 has no interface number 1  
> [10.042313] usb 1-4: New USB device found, idVendor=1199, idProduct=68a2  
> [10.042316] usb 1-4: New USB device strings: Mfr=3, Product=2, SerialNumber=4  
> [10.042319] usb 1-4: Product: MC7710  
> [10.042321] usb 1-4: Manufacturer: Sierra Wireless, Incorporated  
> [10.042323] usb 1-4: SerialNumber: 358178042662108  
> [10.044414] cdc\_mbim 1-4:1.12: cdc-wdm0: USB WDM device  
> [10.044616] cdc\_mbim 1-4:1.12 wwan0: register ‘cdc\_mbim’ at usb-0000:00:14.0-4, CDC MBIM, c2:d3:68:53:42:48

The modem is configured for MBIM only. The newer Windows drivers will do this if they find a modem in QMI mode.

See [My MC7710 can't work on Linux after plug-in it to Windows8](https://forum.sierrawireless.com/t/my-mc7710-cant-work-on-linux-after-plug-in-it-to-windows8/7986/1) for a solution. But please read the following comments too for more details, in particular  
mattfox’ hints on necessary perl modules ( [viewtopic.php?f=117&t=8863&start=15#p37211](https://forum.sierrawireless.com/viewtopic.php?f=117&t=8863&start=15#p37211) )  
and KiernanV’s instructions on how to configure the Windows driver for more useful modes ( [viewtopic.php?f=117&t=8863&start=15#p37212](https://forum.sierrawireless.com/viewtopic.php?f=117&t=8863&start=15#p37212) )

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