instead of rebooting, does a "sudo killall modem-manager" help?
If that doesnt help also run "sudo /etc/init.d/network-manager restart"
if one of those tricks works, please paste the successful connect log.
instead of rebooting, does a "sudo killall modem-manager" help?
If that doesnt help also run "sudo /etc/init. d/network- manager restart"
if one of those tricks works, please paste the successful connect log.