05-16-2018 05:29 AM
I am considering buying an X1C gen 6.
The model that is available in my region is: 20KH007JIV
It has a Fibocom L850-GL.
Does it work with ubuntu 18.04 ? I mean does it work reliably after editing some files here and there or it's a mess ? (I am ok to edit some configs if required).
Should I check anything before purchasing ? (I am plannig to only have Ubuntu 18.04 on it for development).
I know there seems to be some problem with sleep mode but there are acceptable workarounds.
Thank you in advance !
05-17-2018 12:46 AM
No, it will not work with linux at this time.
Fibocom L850 default interface is pcie. USB interface will not on unless pcie is off during boot. But thinkpad x1 m.2 has both pcie and usb. So linux will always show L850 as a pcie device, not USB device.
However, L850 or Intel only supply L850 usb linux driver. No pcie driver. At this time it will not work with linux.
Possible solutions are:
1) Turn off pcie channel 4 during boot
2) Mask pice pins with Kapton tape
But those totally depends on L850 with thinkpad is not a custom made modem and has both USB and pcie.
05-17-2018 01:49 AM
Thanks for shedding some light on this!
I have the same question for the WWAN offered on the T480s, namely:
Thanks for any answer.
05-17-2018 02:10 AM - edited 05-17-2018 02:19 AM
Is it possible to replace that card with something that works under Linux ? Is it technically complex if possible ?
Suspend has problems.
WWAN not suported at all.
I am starting to wonder why this system is listed as "supported" by linux. Need to inform ubuntu.
I have made a request to alter Ubuntu certification to represent the current problems with 6th gen and to properly inform users that the system is not fully supported.
05-17-2018 07:32 AM
I just got my x1y3 with L850-LG, Cat9 version and I am working on disabling pcie channel 4 during boot. I think masking pcie pin out might not work well because Lenovo only supplies Fibocom with pcie Windows driver -- So if it works with Linux, may stop working under Windows.
Cat9 version and Cat6 version uses same Intel xmm7360 chip but antenna circuit (MIMO) is different. Actually newer version thinkpad X1 or your T has very complicated antenna design. One side is (the world first on laptop?) tunable antenna.
05-17-2018 07:36 AM
08-01-2018 10:50 PM
10-08-2018 04:39 AM
Does someone know if there are any news concerning this LTE card L850 GL with linux under the new firmware that has been released very recently (version 1.31) ?
UEFI: 1.31 / ECP: 1.09