<div dir="ltr">Hi,<div><br></div><div>I'm working with a Telit LE910 modem for which ModemManager is constantly looping unable to find a network:</div><div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> Running registration checks (CS: 'yes', PS: 'yes', EPS: 'no')</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8) device open count is 2 (open)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8): --> 'AT+CREG?<CR>'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8): <-- '<CR><LF>+CREG: 2,2<CR><LF><CR><LF>OK<CR><LF>'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8) device open count is 3 (open)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8) device open count is 2 (close)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8): --> 'AT+CGREG?<CR>'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8): <-- '<CR><LF>+CGREG: 2,2<CR><LF><CR><LF>OK<CR><LF>'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> (ttyUSB8) device open count is 1 (close)</div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px">Jul 17 08:05:45 linaro-gnome ModemManager[10429]: <debug> Modem not yet registered in a 3GPP network... will recheck soon</div></div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px"><br></div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px"><br></div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px">Scanning for networks there are plenty available, and I have tried SIM cards for both EE and O2:</div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px"><br></div><div style="font-family:gotham,helvetica,arial,sans-serif;font-size:14px"><div>sudo mmcli -m 1 --3gpp-scan --timeout=300</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px"><br></div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">Found 11 networks:</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23410 - O2 - UK (gsm, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23415 - vodafone UK (umts, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23415 - vodafone UK (lte, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23410 - O2 - UK (lte, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23415 - vodafone UK (gsm, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23430 - EE (gsm, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23410 - O2 - UK (umts, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23420 - 3 UK (umts, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23430 - EE (umts, available)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">23420 - 3 UK (lte, available)</div><div>23430 - EE (lte, available)</div><div><br></div><div>Is the "EPS supported: No" relevant? The LE910 supports 2G, 3G, 4G.</div><div><br></div><div>This is running on an embedded ARM device with a fairly old Ubuntu - ModemManager was on 1.2.0. I've tried upgrading to 1.4.0 and the behaviour is the same.</div><div><br></div><div>A bit more mmcli info below. Any hints would be much appreciated.</div><div><br></div><div>Many thanks,</div><div>Kelvin.</div><div><br></div><div><br></div><div><div>/org/freedesktop/ModemManager1/Modem/1 (device id '09c17ce0710e6316d160278ddd03f542021ac6ad')</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  Hardware |   manufacturer: 'Telit'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |          model: 'LE910-EUG'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |       revision: '17.00.523'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |      supported: 'gsm-umts, lte'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |        current: 'gsm-umts, lte'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |   equipment id: '359852053548609'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  System   |         device: '/sys/devices/f9400000.ssusb/f9400000.dwc3/xhci-hcd.0.auto/usb1/1-2/1-2.1'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |        drivers: 'option1'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |         plugin: 'Generic'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |   primary port: 'ttyUSB8'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |          ports: 'ttyUSB8 (at)'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  Numbers  |           own : 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  Status   |           lock: 'none'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           | unlock retries: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |          state: 'searching'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |    power state: 'on'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |    access tech: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           | signal quality: '0' (cached)</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  Modes    |      supported: 'allowed: 2g, 3g, 4g; preferred: none'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |        current: 'allowed: 2g, 3g, 4g; preferred: none'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  Bands    |      supported: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |        current: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  IP       |      supported: 'ipv4, ipv6, ipv4v6'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  3GPP     |           imei: '359852053548609'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |  enabled locks: 'none'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |    operator id: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |  operator name: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |   subscription: 'unknown'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">           |   registration: 'searching'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  SIM      |           path: '/org/freedesktop/ModemManager1/SIM/0'</div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px"><br></div><div style="font-family:"Helvetica Neue",Arial,sans;font-size:16px">  -------------------------</div><div>  Bearers  |          paths: 'none'</div></div></div></div>