LinuxQuestions.org
Welcome to the most active Linux Forum on the web.
Home Forums Tutorials Articles Register
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
Reload this Page 3G connection with ModemManager and Netplan connect and disconnect immediatly
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices


Reply
  Search this Thread
Old 10-12-2023, 06:54 AM   #1
csedax90
LQ Newbie
 
Registered: Oct 2023
Posts: 1

Rep: Reputation: 0
3G connection with ModemManager and Netplan connect and disconnect immediatly

Hi all.

I have a problem with an old 3G modem (Telit HE910), the connection is made via Netplan and ModemManager.
The modem is recognized correctly when Ubuntu starts and the SIM is also recognized without problems.
The strange thing is that it seems that the connection is established but then immediately the modem disconnects.
I tried starting ModemManager in debug mode but I'm not very expert with modems to understand where the problem actually is.

Netplan config:
Code:
    network:
      version: 2
      renderer: NetworkManager
      ethernets:
        enp3:                 # eth0 - Maintenance
          dhcp4: false
          optional: true
          addresses:
          - 172.0.0.10/24
          routes:
          - to: default
            via: 172.0.0.1
          nameservers:
            addresses:
            - 8.8.8.8
            - 8.8.4.4
          dhcp4-overrides:
            route-metric: 1
          match:
            name: enp3*
          set-name: enp3
        enp4:                 # eth1 - External modem
          dhcp4: true
          dhcp6: false
          optional: true
          match:
            name: enp4*
          set-name: enp4
      modems:
        telit:                # Internal modem
          dhcp4: true
          optional: true
          apn: iliad
          auto-config: true
          dhcp4-overrides:
            route-metric: 900
          match:
            name: ttyACM*
          set-name: mobile
      wifis:
        wlp1s0:
          dhcp4: false
          dhcp6: false
          optional: true
          access-points:      # Required for wifis
            "empty":
              password: ""
ModemManager logs:
Code:
    ModemManager[1696]: <debug> [1662750117.761616] [modem0/bearer0] connection through a plain serial AT port: ttyACM0
    ModemManager[1696]: <debug> [1662750117.761825] [modem0/ttyACM0/at] device open count is 5 (open)
    ModemManager[1696]: <debug> [1662750117.762137] [modem0/ttyACM0/at] device open count is 4 (close)
    ModemManager[1696]: <debug> [1662750117.762428] [modem0/ttyACM0/at] --> 'ATD*99***3#<CR>'
    ModemManager[1696]: <debug> [1662750117.796882] [modem0/ttyACM0/at] <-- '<CR><LF>CONNECT<CR><LF>'
    ModemManager[1696]: <debug> [1662750117.797202] [modem0/bearer0] setting flow control in ttyACM0: rts-cts
    ModemManager[1696]: <debug> [1662750117.797369] [modem0/ttyACM0/at] enabling RTS/CTS flow control
    ModemManager[1696]: <debug> [1662750117.797575] [modem0/ttyACM0/at] flow control settings updated to rts-cts
    ModemManager[1696]: <debug> [1662750117.797780] [modem0/ttyACM0/at] port now connected
    ModemManager[1696]: <debug> [1662750117.798010] [modem0/bearer0] connected
    ModemManager[1696]: <debug> [1662750117.798634] [modem0/bearer0] PPP is required for connection, will ignore disconnection reports
    ModemManager[1696]: <info>  [1662750117.798836] [modem0] state changed (registered -> connected)
    ModemManager[1696]: <info>  [1662750117.800684] [modem0] simple connect state (8/8): all done
    ModemManager[1696]: <debug> [1662750117.801266] [modem0/ttyACM0/at] device open count is 3 (close)
    ModemManager[1696]: <debug> [1662750117.836536] [modem0] user request to disconnect modem (all bearers)
    ModemManager[1696]: <debug> [1662750117.839942] [modem0] user request to disconnect modem (all bearers)
    ModemManager[1696]: <debug> [1662750117.850015] [modem0] user request to connect modem
    ModemManager[1696]: <debug> [1662750117.859771] [modem0/bearer0] disconnecting...
    ModemManager[1696]: <info>  [1662750117.860051] [modem0] state changed (connected -> disconnecting)
    ModemManager[1696]: <debug> [1662750117.861365] [modem0/bearer0] sending PDP context deactivation in secondary port...
    ModemManager[1696]: <debug> [1662750117.861621] [modem0/ttyACM3/at] device open count is 2 (open)
    ModemManager[1696]: <debug> [1662750117.862099] [modem0/ttyACM3/at] --> 'AT+CGACT=0,3<CR>'
    ModemManager[1696]: <debug> [1662750117.888064] [modem0/ttyACM3/at] <-- '<CR><LF>OK<CR><LF>'
    ModemManager[1696]: <debug> [1662750117.888482] [modem0/bearer0] reopening data port ttyACM0...
    ModemManager[1696]: <debug> [1662750117.888661] [modem0/ttyACM0/at] reopening port (3)
    ModemManager[1696]: <debug> [1662750117.888796] [modem0/ttyACM0/at] device open count is 2 (close)
    ModemManager[1696]: <debug> [1662750117.888921] [modem0/ttyACM0/at] device open count is 1 (close)
    ModemManager[1696]: <debug> [1662750117.889047] [modem0/ttyACM0/at] device open count is 0 (close)
    ModemManager[1696]: <debug> [1662750117.889250] [modem0/ttyACM0/at] closing serial port...
    ModemManager[1696]: <debug> [1662750117.889431] [modem0/ttyACM0/at] port now disconnected
    ModemManager[1696]: <debug> [1662750117.892280] [modem0/ttyACM0/at] serial port closed
    ModemManager[1696]: <debug> [1662750117.892472] [modem0/ttyACM3/at] device open count is 1 (close)
    ModemManager[1696]: <info>  [1662750117.892880] [modem0] simple connect started...
    ModemManager[1696]: <debug> [1662750117.893018] [modem0]    profile ID: unspecified
    ModemManager[1696]: <debug> [1662750117.893149] [modem0]    PIN: unspecified
    ModemManager[1696]: <debug> [1662750117.893266] [modem0]    operator ID: unspecified
    ModemManager[1696]: <debug> [1662750117.893376] [modem0]    allowed roaming: yes
    ModemManager[1696]: <debug> [1662750117.893487] [modem0]    APN: iliad
    ModemManager[1696]: <debug> [1662750117.893596] [modem0]    APN type: unspecified
    ModemManager[1696]: <debug> [1662750117.893707] [modem0]    IP family: ipv4v6
    ModemManager[1696]: <debug> [1662750117.893828] [modem0]    allowed authentication: unspecified
    ModemManager[1696]: <debug> [1662750117.893948] [modem0]    user: unspecified
    ModemManager[1696]: <debug> [1662750117.894068] [modem0]    password: unspecified
    ModemManager[1696]: <debug> [1662750117.894184] [modem0]    multiplex: unspecified
    ModemManager[1696]: <info>  [1662750117.894341] [modem0] simple connect state (4/8): wait to get fully enabled
    ModemManager[1696]: <debug> [1662750118.893991] [modem0/ttyACM0/at] opening serial port...
    ModemManager[1696]: <debug> [1662750118.896308] [modem0/ttyACM0/at] setting up baudrate: 57600
    ModemManager[1696]: <debug> [1662750118.896488] [modem0/ttyACM0/at] no flow control explicitly requested for device
    ModemManager[1696]: <debug> [1662750118.896831] [modem0/ttyACM0/at] device open count is 1 (open)
    ModemManager[1696]: <debug> [1662750118.896970] [modem0/ttyACM0/at] device open count is 2 (open)
    ModemManager[1696]: <debug> [1662750118.897117] [modem0/ttyACM0/at] device open count is 3 (open)
    ModemManager[1696]: <debug> [1662750118.897306] [modem0/bearer0] flashing data port ttyACM0...
    ModemManager[1696]: <debug> [1662750118.897691] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750118.898171] [modem0/ttyACM0/at] device open count is 2 (close)
    ModemManager[1696]: <debug> [1662750118.898562] [modem0/ttyACM0/at] running init sequence...
    ModemManager[1696]: <debug> [1662750118.899053] [modem0/bearer0] PDP disconnection already sent
    ModemManager[1696]: <debug> [1662750118.899235] [modem0/bearer0] disconnected
    ModemManager[1696]: <info>  [1662750118.899435] [modem0] state changed (disconnecting -> registered)
    ModemManager[1696]: <info>  [1662750118.899820] [modem0] simple connect state (5/8): register
    ModemManager[1696]: <debug> [1662750118.900457] [modem0] already registered automatically in network '22250', automatic registration not launched...
    ModemManager[1696]: <info>  [1662750118.902789] [modem0/bearer0] connection #1 finished: duration 1s, tx: 0 bytes, rx: 0 bytes
    ModemManager[1696]: <info>  [1662750118.903778] [modem0] simple connect state (6/8): bearer
    ModemManager[1696]: <debug> [1662750118.905370] [modem0] creating new bearer...
    ModemManager[1696]: <debug> [1662750118.905609] [modem0] creating broadband bearer in broadband modem...
    ModemManager[1696]: <debug> [1662750118.906852] [modem0/ttyACM0/at] device open count is 3 (open)
    ModemManager[1696]: <info>  [1662750118.910141] [modem0] simple connect state (7/8): connect
    ModemManager[1696]: <debug> [1662750118.910928] [modem0/bearer1] connecting...
    ModemManager[1696]: <info>  [1662750118.911186] [modem0] state changed (registered -> connecting)
    ModemManager[1696]: <debug> [1662750118.913608] [modem0/bearer1] launching 3GPP connection attempt
    ModemManager[1696]: <debug> [1662750118.913857] [modem0] set profile state (1/8): check format
    ModemManager[1696]: <debug> [1662750118.914074] [modem0/ttyACM0/at] device open count is 4 (open)
    ModemManager[1696]: <debug> [1662750118.914341] [modem0/ttyACM0/at] device open count is 3 (close)
    ModemManager[1696]: <debug> [1662750118.915863] [modem0/ttyACM0/at] --> 'ATE0<CR>'
    ModemManager[1696]: <debug> [1662750119.795226] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750120.795152] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750121.180951] [modem0/ttyACM3/at] <-- '<CR><LF>+CIEV: signal,2<CR><LF>'
    ModemManager[1696]: <debug> [1662750121.181451] [modem0] signal quality updated (28)
    ModemManager[1696]: <debug> [1662750121.795367] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750122.510824] [modem0/ttyACM0/at] device open count is 4 (open)
    ModemManager[1696]: <debug> [1662750122.511330] [modem0/ttyACM0/at] --> 'ATV1<CR>'
    ModemManager[1696]: <debug> [1662750122.795777] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750123.795760] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750124.796161] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <warn>  [1662750125.510748] [modem0] port ttyACM0 timed out 2 consecutive times
    ModemManager[1696]: <debug> [1662750125.511081] [modem0/ttyACM0/at] --> 'AT+CMEE=1<CR>'
    ModemManager[1696]: <debug> [1662750125.796557] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750126.797186] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <debug> [1662750127.797395] [modem0/ttyACM0/at] <-- '~\255}#\192!}!}!} }8}"}&} } } } }#}$\192#}%}&,\2070d}'}"}(}"\214\165~'
    ModemManager[1696]: <warn>  [1662750128.511090] [modem0] port ttyACM0 timed out 3 consecutive times
    ModemManager[1696]: <debug> [1662750128.511364] [modem0/ttyACM0/at] --> 'ATX4<CR>'
    ModemManager[1696]: <debug> [1662750128.931528] [modem0/ttyACM0/at] <-- '<CR><LF>NO CARRIER<CR><LF>'
    ModemManager[1696]: <debug> [1662750128.931900] [modem0/ttyACM0/at] operation failure: 1 (No carrier)
    ModemManager[1696]: <debug> [1662750128.932274] [modem0/ttyACM0/at] --> 'AT&C1<CR>'
    ModemManager[1696]: <debug> [1662750128.938206] [modem0/ttyACM0/at] <-- '<CR><LF>+CIEV: signal,2<CR><LF>'
    ModemManager[1696]: <debug> [1662750128.938646] [modem0] signal quality updated (28)
    ModemManager[1696]: <debug> [1662750128.948414] [modem0/ttyACM0/at] <-- '<CR><LF>OK<CR><LF>'
    ModemManager[1696]: <debug> [1662750128.949130] [modem0] +CGDCONT format details for PDP type 'ipv4v6': minimum 1, maximum 5
    ModemManager[1696]: <debug> [1662750128.949320] [modem0] context definition format: minimum 1, maximum 5
    ModemManager[1696]: <debug> [1662750128.949464] [modem0] set profile state (2/8): list before
    ModemManager[1696]: <debug> [1662750128.949675] [modem0/ttyACM0/at] device open count is 5 (open)
    ModemManager[1696]: <debug> [1662750128.949897] [modem0/ttyACM0/at] device open count is 4 (close)
    ModemManager[1696]: <debug> [1662750128.950154] [modem0/ttyACM0/at] --> 'AT+CCLK?<CR>'
    ModemManager[1696]: <debug> [1662750128.975347] [modem0/ttyACM0/at] <-- '<CR><LF>'
    ModemManager[1696]: <debug> [1662750128.975784] [modem0/ttyACM0/at] <-- '+CCLK: "00/01/01,00:32:47+08"<CR><LF><CR><LF>OK<CR><LF>'
    ModemManager[1696]: <debug> [1662750128.976535] [modem0/ttyACM0/at] device open count is 3 (close)
    ModemManager[1696]: <debug> [1662750128.977418] [modem0/ttyACM0/at] --> 'AT+CGDCONT?<CR>'
    ModemManager[1696]: <debug> [1662750129.003874] [modem0/ttyACM0/at] <-- '<CR><LF>+CGDCONT: 1,"IP","web.omnitel.it","",0,0<CR><LF>+CGDCONT: 2,"IP","iliad","",0,0<CR><LF>+CGDCONT: 3,"IPV4V6","iliad","",0,0<CR><LF><CR><LF>OK<CR><LF>'
    ModemManager[1696]: <debug> [1662750129.004954] [modem0] set profile state (3/8): select profile (best)
    ModemManager[1696]: <debug> [1662750129.005130] [modem0] found exact context at profile 3
    ModemManager[1696]: <debug> [1662750129.005258] [modem0] reusing profile '3'
    ModemManager[1696]: <debug> [1662750129.005408] [modem0] set profile state (4/8): check activated profile
    ModemManager[1696]: <debug> [1662750129.005614] [modem0] checking if profile with id '3' is already activated...=
    ModemManager[1696]: <debug> [1662750129.005813] [modem0/ttyACM0/at] device open count is 4 (open)
    ModemManager[1696]: <debug> [1662750129.006106] [modem0/ttyACM0/at] device open count is 3 (close)
    ModemManager[1696]: <debug> [1662750129.006645] [modem0/ttyACM0/at] --> 'AT+CGACT?<CR>'
    ModemManager[1696]: <debug> [1662750129.032246] [modem0/ttyACM0/at] <-- '<CR><LF>'
    ModemManager[1696]: <debug> [1662750129.032967] [modem0/ttyACM0/at] <-- '+CGACT: 1,0<CR><LF>+CGACT: 2,0<CR><LF>+CGACT: 3,0<CR><LF><CR><LF>OK<CR><LF>'
    ModemManager[1696]: <debug> [1662750129.034446] [modem0] profile '3' is not activated
    ModemManager[1696]: <debug> [1662750129.034826] [modem0] set profile state (6/8): profile already stored
    ModemManager[1696]: <debug> [1662750129.035450] [modem0] set profile state (8/8): all done
    ModemManager[1696]: <debug> [1662750129.036522] [modem0/ttyACM0/at] device open count is 4 (open)
thanks for your help
 
Old 10-24-2023, 08:20 PM   #2
nini09
Senior Member
 
Registered: Apr 2009
Posts: 1,860

Rep: Reputation: 161Reputation: 161
Do you input a correct phone number?
 
  


Reply



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
LXer: Fwupd 1.7.4 Released with Support for ModemManager Devices and New Hardware LXer Syndicated Linux News 0 01-13-2022 08:42 PM
netplan (systemd-network) : how to connect to another AP? concoran Linux - Networking 1 05-17-2020 02:02 AM
dual boot skips loading grub and loads win xp immediatly. short circut Fedora 6 06-25-2006 10:16 AM
Hotplug always signs iPAQ on and immediatly off hotel-lima Linux - Laptop and Netbook 0 07-03-2005 10:29 AM

LinuxQuestions.org > Forums > Linux Forums > Linux - Networking

All times are GMT -5. The time now is 12:19 AM.

Contact Us - Advertising Info - Rules - Privacy - LQ Merchandise - Donations - Contributing Member - LQ Sitemap -
Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Open Source Consulting | Domain Registration