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Thread: Reset WWAN?

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    Default Reset WWAN?

    My WWAN is not networked even though it shows activity. It'll seem to work for so long but goes wonk over many dups. I found an inplace upgrade not to work whereas nuke & pave did. This suggests the problem was in some /home configuration? Anyone know what to do? Many thanks in anticipation of help.
    Vintage IBM ThinkPad T21 (my first) laptop 1GHz PIII [T22 heatsink] ~ Silicon Heaven [RIP]
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    Default Re: Reset WWAN?

    Quote Originally Posted by fleamour View Post
    My WWAN is not networked even though it shows activity. It'll seem to work for so long but goes wonk over many dups. I found an inplace upgrade not to work whereas nuke & pave did. This suggests the problem was in some /home configuration? Anyone know what to do? Many thanks in anticipation of help.
    More explicit details required. What brand/model? How are you connected to it? Is it a USB-connected device? Managed by ModemManager?
    Last edited by deano_ferrari; 19-Mar-2018 at 23:19.

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    Default Re: Reset WWAN?

    M.2 Sierra Wireless EM7345 under a ThinkPad X250.
    Vintage IBM ThinkPad T21 (my first) laptop 1GHz PIII [T22 heatsink] ~ Silicon Heaven [RIP]
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    Default Re: Reset WWAN?

    Quote Originally Posted by fleamour View Post
    M.2 Sierra Wireless EM7345 under a ThinkPad X250.
    OK, so an internal device connected to the USB subsystem.

    It can be shown with
    Code:
    usb-devices
    If it is dropping the connection after a while, monitoring NetworkManager log could be useful here
    Code:
    sudo journalctl -fu NetworkManager
    Just leave it running in a terminal and observe/capture the output when you seem to no longer be connected.
    Last edited by deano_ferrari; 20-Mar-2018 at 16:35.

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    Default Re: Reset WWAN?

    [QUOTE=deano_ferrari;2859486]OK, so an internal device connected to the USB subsystem.

    It can be shown with
    Code:
    usb-devices
    Code:
    T:  Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#=  2 Spd=480 MxCh= 0
    D:  Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1199 ProdID=a001 Rev=17.29
    S:  Manufacturer=Sierra Wireless Inc.
    S:  Product=Sierra Wireless EM7345 4G LTE
    S:  SerialNumber=013937006331084
    C:  #Ifs= 4 Cfg#= 1 Atr=e0 MxPwr=100mA
    I:  If#=0x0 Alt= 1 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim
    I:  If#=0x1 Alt= 2 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim
    I:  If#=0x2 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=cdc_acm
    I:  If#=0x3 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm
    Straight up acts as not connected, the WWAN icon can ghost (disappear but leave empty space in system tray.)
    Code:
    Mar 21 16:33:34 X250.ThinkPad NetworkManager[1542]: <info>  [1521650014.9295] manager: NetworkManager state is now CONNECTED_LOCAL
    Mar 21 16:33:34 X250.ThinkPad NetworkManager[1542]: <info>  [1521650014.9303] manager: NetworkManager state is now CONNECTED_SITE
    Mar 21 16:33:34 X250.ThinkPad NetworkManager[1542]: <info>  [1521650014.9304] policy: set '3' (wwp0s20u4) as default for IPv4 routing and DNS
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:33:34 dns-resolver: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched...
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:33:34 dns-resolver: You can find my version in /etc/resolv.conf.netconfig
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: ATTENTION: You have modified /etc/resolv.conf.  Leaving it untouched...
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: You can find my version in /etc/resolv.conf.netconfig ...
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: nisdomainname: you must be root to change the domain name
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: <warn>  [1521650015.0935] dns-mgr: could not commit DNS changes: Error calling netconfig: exited with status 20
    Mar 21 16:33:35 X250.ThinkPad NetworkManager[1542]: <info>  [1521650015.0935] device (cdc-wdm0): Activation: successful, device activated.
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.1438] device (cdc-wdm0): state change: activated -> deactivating (reason 'user-requested', sys-iface-state: 'managed')
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.1441] manager: NetworkManager state is now CONNECTED_LOCAL
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.1450] audit: op="device-disconnect" interface="wwp0s20u4" ifindex=4 pid=2622 uid=1000 result="success"
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:33:59 dns-resolver: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched...
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:33:59 dns-resolver: You can find my version in /etc/resolv.conf.netconfig
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: ATTENTION: You have modified /etc/resolv.conf.  Leaving it untouched...
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: You can find my version in /etc/resolv.conf.netconfig ...
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: nisdomainname: you must be root to change the domain name
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <warn>  [1521650039.3086] dns-mgr: could not commit DNS changes: Error calling netconfig: exited with status 20
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.3095] modem["cdc-wdm0"]: modem state changed, 'connected' --> 'disconnecting' (reason: user-requested)
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.3766] modem["cdc-wdm0"]: modem state changed, 'disconnecting' --> 'registered' (reason: user-requested)
    Mar 21 16:33:59 X250.ThinkPad NetworkManager[1542]: <info>  [1521650039.3768] device (cdc-wdm0): state change: deactivating -> disconnected (reason 'user-requested', sys-iface-state: 'managed')
    Mar 21 16:34:01 X250.ThinkPad NetworkManager[1542]: <info>  [1521650041.0289] device (cdc-wdm0): Activation: starting connection '3' (161b2b97-fd58-4491-8ef0-1252df0b4214)
    Mar 21 16:34:01 X250.ThinkPad NetworkManager[1542]: <info>  [1521650041.0291] audit: op="connection-activate" uuid="161b2b97-fd58-4491-8ef0-1252df0b4214" name="3" pid=2622 uid=1000 result="success"
    Mar 21 16:34:01 X250.ThinkPad NetworkManager[1542]: <info>  [1521650041.0294] device (cdc-wdm0): state change: disconnected -> prepare (reason 'none', sys-iface-state: 'managed')
    Mar 21 16:34:01 X250.ThinkPad NetworkManager[1542]: <info>  [1521650041.0297] manager: NetworkManager state is now CONNECTING
    Mar 21 16:34:01 X250.ThinkPad NetworkManager[1542]: <info>  [1521650041.0377] modem["cdc-wdm0"]: modem state changed, 'registered' --> 'connecting' (reason: user-requested)
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9379] modem["cdc-wdm0"]: modem state changed, 'connecting' --> 'connected' (reason: user-requested)
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9432] device (cdc-wdm0): state change: prepare -> config (reason 'none', sys-iface-state: 'managed')
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9440] device (cdc-wdm0): state change: config -> ip-config (reason 'none', sys-iface-state: 'managed')
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9449] modem-broadband[cdc-wdm0]: IPv4 static configuration:
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9451] modem-broadband[cdc-wdm0]:   address 10.143.125.61/24
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9451] modem-broadband[cdc-wdm0]:   gateway 10.143.125.1
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9452] modem-broadband[cdc-wdm0]:   DNS 172.30.139.16
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9452] modem-broadband[cdc-wdm0]:   DNS 172.31.139.16
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9526] device (cdc-wdm0): state change: ip-config -> ip-check (reason 'none', sys-iface-state: 'managed')                                                                                               
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9547] device (cdc-wdm0): state change: ip-check -> secondaries (reason 'none', sys-iface-state: 'managed')                                                                                             
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9550] device (cdc-wdm0): state change: secondaries -> activated (reason 'none', sys-iface-state: 'managed')                                                                                            
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9551] manager: NetworkManager state is now CONNECTED_LOCAL                                                                                                                                             
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9561] manager: NetworkManager state is now CONNECTED_SITE                                                                                                                                              
    Mar 21 16:34:02 X250.ThinkPad NetworkManager[1542]: <info>  [1521650042.9562] policy: set '3' (wwp0s20u4) as default for IPv4 routing and DNS                                                                                                                                  
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:34:03 dns-resolver: ATTENTION: You have modified /etc/resolv.conf. Leaving it untouched...                                                                                                                   
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: <13>Mar 21 16:34:03 dns-resolver: You can find my version in /etc/resolv.conf.netconfig                                                                                                                                    
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: ATTENTION: You have modified /etc/resolv.conf.  Leaving it untouched...                                                                                                                                                    
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: You can find my version in /etc/resolv.conf.netconfig ...                                                                                                                                                                  
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: nisdomainname: you must be root to change the domain name                                                                                                                                                                  
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: <warn>  [1521650043.1077] dns-mgr: could not commit DNS changes: Error calling netconfig: exited with status 20                                                                                                            
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: <info>  [1521650043.1077] device (cdc-wdm0): Activation: successful, device activated.
    Vintage IBM ThinkPad T21 (my first) laptop 1GHz PIII [T22 heatsink] ~ Silicon Heaven [RIP]
    X250 Lenovo Thinkpad i7 ~ Linux Mint 19.3
    C2D Extreme QX9650 Micro ATX Tower (2nd Main Board) ~ openSUSE Tumbleweed KDE

  6. #6
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    Default Re: Reset WWAN?

    The log snippet posted doesn't suggest any connection issues with the WWAN device, although I did a few messages related to /etc/resov.conf not being modified....
    Code:
    Mar 21 16:34:03 dns-resolver: You can find my version in /etc/resolv.conf.netconfig
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: ATTENTION: You have modified /etc/resolv.conf.  Leaving it untouched...
    Mar 21 16:34:03 X250.ThinkPad NetworkManager[1542]: You can find my version in /etc/resolv.conf.netconfig ...
    That will happen if NM think that it shouldn't touch it. That might be affecting your ability to to resolve perhaps if no valid nameserver(s) defined there...
    Code:
    cat /etc/resolv.conf
    You could also just remove it, and reconnect. Then NM will recreate it.

    the WWAN icon can ghost (disappear but leave empty space in system tray.)
    I recall similar behaviour from years ago, but it didn't affect the device behaviour - just a front-end issue.

  7. #7
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    Thumbs up Re: Reset WWAN?

    You genius!!!

    Deleting file then reconnecting resolved completely!!!
    Vintage IBM ThinkPad T21 (my first) laptop 1GHz PIII [T22 heatsink] ~ Silicon Heaven [RIP]
    X250 Lenovo Thinkpad i7 ~ Linux Mint 19.3
    C2D Extreme QX9650 Micro ATX Tower (2nd Main Board) ~ openSUSE Tumbleweed KDE

  8. #8
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    Default Re: Reset WWAN?

    Quote Originally Posted by fleamour View Post
    You genius!!!

    Deleting file then reconnecting resolved completely!!!
    I’m glad it was something simple!

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