Since for AMD Thinkpads from 2020 Lenovo Thinkpad T14 (AMD) Gen 1, Lenovo ThinkPad T14s (AMD) Gen 1, Lenovo Thinkpad L14 (AMD) Gen 1, Lenovo Thinkpad L15 (AMD) Gen 1 with AMD processors only PCIe is routed to the LTE modem, the only solution is an alpha stage driver written with Python 3 found at https://github.com/xmm7360/xmm7360-pci.
This driver is intended to work with Fibocom L850-GL LTE by PCIe, not by mode switch to USB, which is not supported on AMD models, but with commands directly to the modem. Fibocom "supports" Linux but only in USB mode. There is no sign of driver beeing developt. For newer generations (L860 ?) Lenovo is developing a driver.
$ lspci | grep XMM
shows the Intel name Intel XMM7360 (PCI ID 8086:7360)
> 05:00.0 Wireless controller [0d40]: Intel Corporation XMM7360 LTE Advanced Modem (rev 01)
Thanks to https://github.com/abrasive for his work!
Get the linux headers and build tools.
Install these packages:
Remove PIN in Windows and check that it is a working card. Alternativly echo the PIN with
# echo "AT+CPIN=\"0000\"" >> /dev/ttyXMM1
after the make && make load steps. Replace `0000` with your pin code.(ref. https://github.com/xmm7360/xmm7360-pci/pull/21/files)
Compile and run
$ git clone https://github.com/xmm7360/xmm7360-pci.git $ cd xmm7360-pci $ make && make load # python3 rpc/open_xdatachannel.py --apn apn.url # echo "nameserver 18.104.22.168" >> /etc/resolv.conf # ip link set wwan0 up