Unable to establish internet in ubuntu using EC200U-CN

Technical Subjects Software General Function
1

Hi There

I want to use ec200u-cn in my ubuntu computer as internet modem. but after trying every possible solution there is still not success. driver is working because i can see EC200U-CN detected and AT command also working.

I am using jio sim card in india.

Here is some useful log

vicharak@vicharak:~$  mmcli -L
/org/freedesktop/ModemManager1/Modem/0 [Quectel] EC200U
vicharak@vicharak:~$ mmcli -m 0

General  |                 path: /org/freedesktop/ModemManager1/Modem/0
|            device id: 7e3fa2e2a9e87cc1ba7cde71c01fd9e8de19ba0e

Hardware |         manufacturer: Quectel
|                model: EC200U
|    firmware revision: EC200UCNAAR03A03M08
|            supported: gsm-umts
|              current: gsm-umts
|         equipment id: 860617089596183

System   |               device: /sys/devices/platform/usbdrd3_0/fc000000.usb/xhci-hcd.16.auto/usb5/5-1
|              physdev: /sys/devices/platform/usbdrd3_0/fc000000.usb/xhci-hcd.16.auto/usb5/5-1
|              drivers: option, rndis_host
|               plugin: quectel
|         primary port: ttyUSB5
|                ports: enx024bb3b9ebe5 (net), ttyUSB0 (at), ttyUSB5 (at),
|                       ttyUSB6 (at)

Numbers  |                  own: 919664916673

Status   |       unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (3), sim-puk2 (10)
|                state: registered
|          power state: on
|          access tech: lte
|       signal quality: 100% (recent)

Modes    |            supported: allowed: any; preferred: none
|              current: allowed: any; preferred: none

IP       |            supported: ipv4, ipv6, ipv4v6

3GPP     |                 imei: 860617089596183
|          operator id: 405857
|        operator name: IND-JIO
|         registration: home
| packet service state: attached

3GPP EPS | ue mode of operation: csps-2

SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/0

vicharak@vicharak:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host noprefixroute
valid_lft forever preferred_lft forever
2: dummy0: <BROADCAST,NOARP> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether 4a:e7:24:bf:1b:ab brd ff:ff:ff:ff:ff:ff
3: end1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether da:13:42:26:20:c3 brd ff:ff:ff:ff:ff:ff
4: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether 28:f5:2b:f2:20:19 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.15/24 brd 192.168.1.255 scope global dynamic noprefixroute wlan0
valid_lft 84953sec preferred_lft 84953sec
inet6 2401:4900:8fef:a188:f0dc:4829:6fe0:825e/64 scope global temporary dynamic
valid_lft 86272sec preferred_lft 84801sec
inet6 2401:4900:8fef:a188:da79:895e:136e:733a/64 scope global dynamic mngtmpaddr noprefixroute
valid_lft 86272sec preferred_lft 86272sec
inet6 fe80::d104:630a:9886:bae0/64 scope link noprefixroute
valid_lft forever preferred_lft forever
5: enx024bb3b9ebe5: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN group default qlen 1000
link/ether 02:4b:b3:b9:eb:e5 brd ff:ff:ff:ff:ff:ff
inet6 fe80::6255:ef08:8704:dc51/64 scope link noprefixroute
valid_lft forever preferred_lft forever

2

Get rid of ModemManager completely.

See Need Assistance with Quectel EC200U Module Internet Connectivity - #7 by jfrog

3

Yes it worked. thank you. i made this gist for other so they don’t struggle

5

Can we use it same way over UART instead of USB-C connection?

6

My understanding that with UART you’ll be limited to PPP only.

7

does PPP perform lower than ECM mode over usb c? or does it not matter?

8

PPP is the worst option possible.