Arch Linux

philipp

Member

Registered: 2018-12-14

Posts: 10

Laptop — trouble with mobile broadband modem

Hello Everybody,

lastly I successfully installed Arch and Gnome on my Laptop (Lenovo P53), which is about two years old now. I bought it with an integrated modem for mobile broadband, which I would like to use. So I have inserted a SIM card in the slot and followed the steps here: https://wiki.archlinux.org/title/Mobile_broadband_modem

- installed modemmananger and usb_modswitch
- enabled and started ModemManager.service

Within the BIOS I could find an Entry: enable WWAN - which is enabled. But

mmcli -L

keep showing

No Modems found

But the Problem seams to be that neither lsusb nor lspci show any device that might be the modem. But as listed here it should be somthing like: »Fibocomm 4G-LTE«.

Additionally I have arrived here: https://wiki.archlinux.org/title/ThinkP … e_Internet which says: These modems will show up as /dev/cdc-wdm on the filesystem. But I can't find anything there. Do I have to install libqmi before?

Am I missing any drivers/kernel modules?

Is it possible that the SIM Card I have inserted isn't compatible in some way?

If the modem is broken - is there any way to verify that it is?

Thanks for Help,

best philipp

Last edited by philipp (2022-05-09 06:53:05)

philipp

Member

Registered: 2018-12-14

Posts: 10

Re: Laptop — trouble with mobile broadband modem

Hey There … I have an update on that … I was missing the *acpid* service and now the output of *lspci* shows that:

$ lspci
…
53:00.0 Wireless controller [0d40]: Intel Corporation XMM7360 LTE Advanced Modem (rev 01)
…

So there is a modem. But *mmcli -L** still does not list any modems.