这个库的主要目的是让Thinkpad x1 carbon 2020款在linux下用4G上网，效果不是很稳定，但是基本可用。
This is basically a kernel module version of the python script xmm2usb found
in James Wah's repository. Please be
aware that this is a hacky approach that results the device to be reported by
lcpci as:
02:00.0 Wireless controller [0d40]: Intel Corporation XMM7360 LTE Advanced Modem (rev ff) (prog-if ff)
!!! Unknown header type 7f
Kernel driver in use: xmm7360_usb
This is because the module disables the PCIe root port link, breaking all
communication to the device, but the entry stays there because it has a driver
in use. It should be pretty harmless though, and can be fixed by simply
unloading the module with rmmod (which will also revert all changes though).
I have tested this to work with my Lenovo X1 Carbon (7th Gen) and do not guarantee it to work on any other laptop. Improvements are welcome though.
WARNING: There is a risk of bricking your laptop so you better know what you are doing from here onwards, remember you were warned.
Simply run the following:
make
sudo make install
sudo modprobe xmm7360_usb
Then after the modem boots in USB mode follow the instructions in the original repository to unlock the modem and set it to MBIM mode. Just to document it here as well, what worked for me was connecting to the serial and running:
at@nvm:fix_cat_fcclock.fcclock_mode?
at@nvm:fix_cat_fcclock.fcclock_mode=0
at@store_nvm(fix_cat_fcclock)
AT+GTUSBMODE?
AT+GTUSBMODE=7
AT+CFUN?
AT+CFUN=15
Everything simply worked on my machine from that onwards, and the automatically loaded module makes sure that the modem stays in USB mode even through reboots.
If you encounter something like following while executing sudo make install, you may try installing by DKMS module.
At main.c:160:
- SSL error:02001002:system library:fopen:No such file or directory: ../crypto/bio/bss_file.c:69
- SSL error:2006D080:BIO routines:BIO_new_file:no such file: ../crypto/bio/bss_file.c:76
sign-file: certs/signing_key.pem: No such file or directory
DEPMOD 5.4.0-40-generic
- Install dkms
sudo apt install dkms
- Install xmm7360 module by dkms
./install_dkms.sh
- Load xmm7360 module
sudo modprobe xmm7360_usb
If you want to remove this module from dkms tree, use sudo dkms remove -m xmm7360_usb -v 0.1 --all