Cannot access 4G module through extension board

Which Khadas SBC do you use?


Which system do you use? Android, Ubuntu, OOWOW or others?

Khadas Official Ubuntu 22.04, kernel 6.0.0, downloaded and installed through OOWOW

Please describe your issue below:

I am trying to access the Quectel EM06 4G LTE Module, which is connected via the Khadas New M2X Extension board. However, when I try to use minicom:

sudo minicom -D /dev/ttyUSB2

It says ‘no such file or directory’. And when I use:

ls /dev/tty*

There is no entry for ttyUSB2 (or any ttyUSB*)

Is there any other way to access the Quectel Module? I was able to access it before (on the official Khadas Ubuntu 20.04-4.9 image, but then I did a fresh install of the 22.04-6.0 and now it doesn’t work).

Did you ever get a response to this? I’m having the same issue. It appears the latest Unbuntu images do not have the Qucetel driver built into the kernel?

Please check with this image:

I checked the other images. My problem was that for kernel versions > 4.9, the required drivers for the module were not installed as default for any of the builds. However, I managed to find a way to compile and install them on these versions, and made a git repo for it.

Works for the 6.0/6.1 kernels, not tried for the 5.18 yet.