Changes between Version 128 and Version 129 of wireless/modem

Timestamp:

05/16/2025 04:39:30 PM (7 weeks ago)

Author:

Ryan Erbstoesser

Comment:

add more info for cmb100

wireless/modem

@@ -2142 +2142 @@
 }}}
 
+Another modem configuration that may need to be looked at is called FWAUTOSIM, which is automatic carrier switching by SIM. For this example, FWAUTOSIM was 0, meaning no automatic switching. 
+
 lsusb should show: (may change depending on variant)
 {{{
@@ -2208 +2210 @@
   Bearer   |                paths: /org/freedesktop/ModemManager1/Bearer/0
 
-}}}
-
-
-
-
-== Troubleshooting 
+root@jammy-venice:~# mmcli -m 0 -b 0
+  ------------------------------------
+  General            |           path: /org/freedesktop/ModemManager1/Bearer/0
+                     |           type: default
+  ------------------------------------
+  Status             |      connected: yes
+                     |      suspended: no
+                     |    multiplexed: no
+                     |      interface: wwan0
+                     |     ip timeout: 20
+  ------------------------------------
+  Properties         |            apn: hologram
+                     |        roaming: allowed
+  ------------------------------------
+  IPv4 configuration |         method: static
+                     |        address: 100.77.130.8
+                     |         prefix: 28
+                     |        gateway: 100.77.130.9
+                     |            dns: 8.8.8.8, 8.8.4.4
+                     |            mtu: 1430
+  ------------------------------------
+  Statistics         |     start date: 2025-05-16T16:30:05Z
+                     |       duration: 210
+                     |       bytes rx: 746
+                     |       bytes tx: 588
+                     |       attempts: 1
+                     | total-duration: 210
+                     | total-bytes rx: 746
+                     | total-bytes tx: 588
+root@jammy-venice:~# 
+
+
+}}}
+
+If the DHCP dhclient command doesn't auto-populate wwan0, it may be required to manually configure the IP address and routing of wwan0, an example is below:
+{{{
+ifconfig wwan0 100.77.130.8/28
+route add default gw 100.77.130.9 wwan0
+echo "nameserver 8.8.8.8" > /etc/resolv.conf
+root@jammy-venice:~# route -n
+Kernel IP routing table
+Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
+0.0.0.0         100.77.130.9    0.0.0.0         UG    0      0        0 wwan0
+100.77.130.0    0.0.0.0         255.255.255.240 U     0      0        0 wwan0
+}}}
+
+
+
+
+== Troubleshooting SIM Issues
 If a new modem is not detecting the SIM card, please try the following:
  * Ensure the SIM is in SIM1 slot on the GW16140/GW16141 adapter