<div dir="ltr">You're good at what you do mate, thanks! You want a patch? I think just might be our slow antique hardware though to be honest.</div><div class="gmail_extra"> <div class="gmail_quote">On Fri, May 18, 2018 at 2:57 PM, Aleksander Morgado <<a href="mailto:aleksander@aleksander.es" target="_blank">aleksander@aleksander.es</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">2018-04-25T07:35:16.132117 ModemManager[1797]: <debug> (ttyACM1) device open count is 2 (open) 2018-04-25T07:35:16.143804 ModemManager[1797]: <debug> (ttyACM1): --> 'AT+CIND?<CR>' 2018-04-25T07:35:16.876211 ModemManager[1797]: <debug> (ttyACM1): <-- '<CR><LF>+CIEV: 1,2<CR><LF>' 2018-04-25T07:35:16.955301 ModemManager[1797]: <debug> (ttyACM0): <-- '<CR><LF>+CIEV: 1,2<CR><LF>' 2018-04-25T07:35:19.121047 ModemManager[1797]: <debug> (ttyACM1) device open count is 3 (open) 2018-04-25T07:35:19.134009 ModemManager[1797]: <debug> (ttyACM1) device open count is 4 (open) 2018-04-25T07:35:19.146082 ModemManager[1797]: <debug> (ttyACM1) device open count is 3 (close) 2018-04-25T07:35:19.155738 ModemManager[1797]: <debug> (ttyACM1): --> 'AT^SWWAN?<CR>' 2018-04-25T07:35:20.317705 ModemManager[1797]: <debug> (ttyACM0): <-- '<CR><LF>+CIEV: 1,3<CR><LF>' 2018-04-25T07:35:20.398151 ModemManager[1797]: <debug> (ttyACM1): <-- '<CR><LF>+CIND: 0,2,1,1,1,0,1,0<CR><LF><CR><LF>OK<CR><LF><CR><LF>+CIEV: 1,3<CR><LF><CR><LF>+CIEV: psinfo,6<CR><LF><CR><LF>+CREG: 5,"1611","0217BCC",2<CR><LF><CR><LF>+CGREG: 5,"1611","0217BCC",2<CR><LF><CR><LF>+CIEV: psinfo,10<CR><LF>' 2018-04-25T07:35:20.413390 ModemManager[1797]: <debug> Modem /org/freedesktop/ModemManager1/Modem/0: access technology changed (hsdpa, hsupa -> umts) 2018-04-25T07:35:20.427281 ModemManager[1797]: <debug> Modem /org/freedesktop/ModemManager1/Modem/0: access technology changed (umts -> hsdpa, hsupa) 2018-04-25T07:35:20.438959 ModemManager[1797]: <warn> checking if connected failed: Couldn't parse ^SWWAN response: '+CIND: 0,2,1,1,1,0,1,0' </div></div>Look at the AT+CIND? we send at 07:35:16. There's no reply to that one in 3s, so we just keep on with our logic, and the response to the +CIND? comes when we're waiting for the AT^SWWAN response. We should make the AT+CIND? command timeout longer than 3s; in this case something like 4s or 5s would have been enough. -- Aleksander <a href="https://aleksander.es" rel="noreferrer" target="_blank">https://aleksander.es</a> </blockquote></div> </div>