Hi,
I’m having some problems getting a computer with xubuntu 20 or ubuntu server 20 to get a mobile broadband connection.
output of uname -a:
Linux 1077 5.4.0-65-generic #73-Ubuntu SMP Mon Jan 18 17:25:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
The device is detected by lsusb:
Bus 001 Device 006: ID 1199:683c Sierra Wireless, Inc. Mobile Broadband 3G/UMTS (MC8790 Device)
Here is the output of mmcli -m 0:
General | dbus path: /org/freedesktop/ModemManager1/Modem/0
| device id: fb86bc3700839a63325cc0c96698ce5c4ddd32f9
Hardware | manufacturer: Sierra Wireless, Incorporated
| model: MC8790
| firmware revision: K2_0_7_35AP C:/WS/FW/K2_0_7_35AP/MSM6290/SRC 2010/03/04 17:37:08
| supported: gsm-umts
| current: gsm-umts
| equipment id: 352974025627415
System | device: /sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.4
| drivers: sierra
| plugin: Sierra (legacy)
| primary port: ttyUSB3
| ports: ttyUSB5 (at), ttyUSB4 (at), ttyUSB6 (at), ttyUSB3 (at)
Status | state: registered
| power state: on
| access tech: hsdpa, hsupa
| signal quality: 60% (recent)
Modes | supported: allowed: 2g; preferred: none
| allowed: 3g; preferred: none
| allowed: 2g, 3g; preferred: none
| allowed: 2g, 3g; preferred: 2g
| allowed: 2g, 3g; preferred: 3g
| current: allowed: 2g, 3g; preferred: 3g
IP | supported: ipv4, ipv6
3GPP | imei:
| enabled locks: sim
| operator id:
| operator name:
| registration: home
SIM | dbus path: /org/freedesktop/ModemManager1/SIM/0
Bearer | dbus path: /org/freedesktop/ModemManager1/Bearer/0
the journal of the modem manager service outputs this:
feb 12 10:14:30 1077 ModemManager[9953]: Couldn’t check support for device ‘/sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0’: not supported>
feb 12 10:14:30 1077 ModemManager[9953]: Couldn’t check support for device ‘/sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0’: not supported>
feb 12 10:14:30 1077 ModemManager[9953]: Couldn’t check support for device ‘/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0’: not supported>
feb 12 10:14:30 1077 ModemManager[9953]: Couldn’t check support for device ‘/sys/devices/pci0000:00/0000:00:1c.3/0000:04:00.0’: not supported>
feb 12 10:14:41 1077 ModemManager[9953]: [device /sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.4] creating modem with plugin 'Sie>
feb 12 10:14:41 1077 ModemManager[9953]: Could not grab port (tty/ttyUSB2): ‘Cannot add port ‘tty/ttyUSB2’, unhandled serial type’
feb 12 10:14:41 1077 ModemManager[9953]: Could not grab port (tty/ttyUSB1): ‘Cannot add port ‘tty/ttyUSB1’, unhandled serial type’
feb 12 10:14:41 1077 ModemManager[9953]: Could not grab port (tty/ttyUSB0): ‘Cannot add port ‘tty/ttyUSB0’, unhandled serial type’
feb 12 10:14:41 1077 ModemManager[9953]: Modem for device ‘/sys/devices/pci0000:00/0000:00:1d.0/usb1/1-1/1-1.4/1-1.4.4’ successfully created
feb 12 10:15:14 1077 ModemManager[9953]: (ttyUSB2): close blocked by driver for more than 7 seconds!
feb 12 10:15:22 1077 ModemManager[9953]: Couldn’t load unlock retries: ‘Unknown error’
feb 12 10:15:22 1077 ModemManager[9953]: couldn’t load list of Emergency Numbers: ‘Failed to parse CRSM query result ‘+CRSM: 105,129,""’’
feb 12 10:15:22 1077 ModemManager[9953]: couldn’t load UE mode of operation for EPS: ‘Unknown error’
feb 12 10:15:22 1077 ModemManager[9953]: Modem: state changed (unknown → disabled)
feb 12 10:15:22 1077 ModemManager[9953]: Modem /org/freedesktop/ModemManager1/Modem/0: state changed (disabled → enabling)
feb 12 10:15:30 1077 ModemManager[9953]: (tty/ttyUSB5) at port timed out 2 consecutive times
feb 12 10:15:33 1077 ModemManager[9953]: (tty/ttyUSB5) at port timed out 3 consecutive times
feb 12 10:15:36 1077 ModemManager[9953]: (tty/ttyUSB5) at port timed out 4 consecutive times
feb 12 10:15:46 1077 ModemManager[9953]: Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabling → enabled)
feb 12 10:15:46 1077 ModemManager[9953]: (tty/ttyUSB5) at port timed out 2 consecutive times
feb 12 10:15:46 1077 ModemManager[9953]: Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (unknown → registerin>
feb 12 10:15:46 1077 ModemManager[9953]: Modem /org/freedesktop/ModemManager1/Modem/0: 3GPP Registration state changed (registering → home)
feb 12 10:15:46 1077 ModemManager[9953]: Modem /org/freedesktop/ModemManager1/Modem/0: state changed (enabled → registered)
The thing is that i can’t get a connection neither with the user interface or using nmcli with this command:
nmcli c add type gsm ifname mmcli -m 0 -K| grep modem.generic.primary-port | cut -d: -f2 con-name
which works with another machine i have using an mc8355.
in that case i had to compile the drivers so I am missing something in my configuration?Because in theory it’s drivers are included in the kernel. Any drivers to compile and insert or step to perform?
thanks in advance.