Hello! Just successfully started [Dell Inc.] DW5821e Snapdragon X20 LTE modem on gl.inet beryl ax.
lsusb:
Bus 001 Device 003: ID 413c:81d7 Dell Inc. DW5821e Snapdragon X20 LTE
Sadly, gl.inet UI doesn’t support it. Hasn’t even launched from QMI… anyway.
opkg install modemmanager luci-proto-modemmanager kmod-usb-net-cdc-mbim libmbim mbim-utils
(not sure if last two are needed, i just used them for debug).
go to LuCi (advanced settings in gl.inet UI)
go to interfaces, add new interface - type modemmanager (which you just installed), select your modem, fill your settings (apn, user/password, etc)
Don’t forget to go to firewall tab and assign “WAN” zone for it!
And, well, that’s it. Interface will start and connection to the internet will be working.
With Huawei E3372h-153 i was getting around 10mbps (±), with this modem in enclosure and external antennas. i’m getting 50+ with 38% signal down and 30 up. Latency seems to be lower, too.
Top USB power usage is around 0.6A (beryl ax tops after about 0.8A, causing USB port shutdown), so no external power is needed.
Hoping this info will help gl.inet to implement some sort of support of modemmanager to gl.inet UI (at least seeing cellular: online will be nice!)