I have a similiar situation as @SeaMonkey.
root@GL-MT3000:~# mmcli -L
No modems were found
root@GL-MT3000:~# ls /dev/ttyUSB*
/dev/ttyUSB0 /dev/ttyUSB1 /dev/ttyUSB2 /dev/ttyUSB3
when I plug my GL-M2 board to BerylAX the log says:
Tue Nov 21 19:10:33 2023 kern.info kernel: [ 2093.495672] usb 1-1: new high-speed USB device number 6 using xhci-mtk
Tue Nov 21 19:10:33 2023 kern.info kernel: [ 2093.653942] usb 1-1: USB disconnect, device number 6
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.519675] usb 1-1: new high-speed USB device number 7 using xhci-mtk
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.682551] option 1-1:2.2: GSM modem (1-port) converter detected
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.688913] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.696115] option 1-1:2.3: GSM modem (1-port) converter detected
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.702440] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.709636] option 1-1:2.4: GSM modem (1-port) converter detected
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.715982] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.723233] option 1-1:2.5: GSM modem (1-port) converter detected
Tue Nov 21 19:10:42 2023 kern.info kernel: [ 2102.729640] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB3
Tue Nov 21 19:10:42 2023 kern.warn kernel: [ 2102.765479] usb 1-1: usbfs: process 9059 (usbmode) did not claim interface 1 before use
Tue Nov 21 19:10:43 2023 kern.warn kernel: [ 2102.974425] usb 1-1: usbfs: interface 1 claimed by usbfs while 'usbmode' sets config #0
Tue Nov 21 19:10:43 2023 kern.warn kernel: [ 2103.071773] usb 1-1: usbfs: process 9207 (usbmode) did not claim interface 1 before use
Tue Nov 21 19:10:43 2023 kern.warn kernel: [ 2103.281151] usb 1-1: usbfs: interface 1 claimed by usbfs while 'usbmode' sets config #0
Tue Nov 21 19:10:43 2023 kern.warn kernel: [ 2103.565696] usb 1-1: usbfs: process 9400 (usbmode) did not claim interface 1 before use
Tue Nov 21 19:10:43 2023 kern.warn kernel: [ 2103.774588] usb 1-1: usbfs: interface 1 claimed by usbfs while 'usbmode' sets config #0
Tue Nov 21 19:10:47 2023 kern.warn kernel: [ 2106.917252] usb 1-1: usbfs: process 9555 (usbmode) did not claim interface 1 before use
Tue Nov 21 19:10:52 2023 kern.warn kernel: [ 2112.212016] usb 1-1: usbfs: interface 1 claimed by usbfs while 'usbmode' sets config #0
any ideas?
------- Update
so I read that the problem is caused by usb-modeswitch.
I edited the .conf file for my card 413c:81e0 - added mode “MBIM” which resulted in:
root@GL-MT3000:~# mmcli -L
/org/freedesktop/ModemManager1/Modem/0 [manufacturer unknown] model unknown
I can see that support for the card was added in release 20191128 (but have 2017-12-19) and opkg can not upgrade it. I found the new version online but it needs two other packages upgraded and I’m a bit worried it will end up with complete havoc.
What other options would I have to make it work?