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  • Registered: ‎06-08-2020
  • Location: GB
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X1 Carbon (7th gen) Fibocom L850-GL issue.

2020-06-08, 9:17 AM

Hello all,


I have had my X1 Carbon (7th gen ) for over a month now and am plagued by a persistent issue with the WWAN card and driver since day one when I turned the device on and let windows 10 update followed by Lenovo vantage updates.

If I have to restart my device for a software update etc. upon restart I am met with a constant drone of the connected disconnect hardware noise on windows. I have found this is because the mobile WAN Fibocom L850-GL is not being correctly detected. 


I have found two temporary fixes for this: 

Multiple restarts and power cycling - number of times to restart and cycles has been inconsistent but has been between 2 and 6.

or turning off the noise in windows 10 for hardware connect/disconnect. However, this still means that the hardware behind the scenes will be drawing power etc.


I have tried updating the drivers, both via Lenovo vantage and manually and this has not solved the problem. 


Occasionally I am met with a popup/toast in the lower right of windows, of configuring mobile broadband device. This is stuck at 0%, as per the attached figure and eventually disappears.


I have contacted Lenovo via their twitter support, however, they only suggested what I had already done regarding "updating the drivers". They have since been silent when I have tried to contact them further. 


I will soon be dual booting my device with Linux as part of my job. Therefore , I fear that the current "solution" of multiple restarts will fail when I have to use windows.


Has anyone had this problem before and know of an actual solution?

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