Troubles establishing connection with wvdial

I have a Huawei cell modem EM680 with which I can establish a connection on my Ubuntu 13.10 box just fine. I plug it in and I can establish a connection using the Connections Manager. I have a box without X server and I want to establish a connection with that same modem on that box. I can get a serial link at /dev/ttyUSB1 and if I connect to it using screen /dev/ttyUSB1 460800 and send AT, it responds with OK just fine — so the modem works! After that I tried to establish a connection using wvdial with my /etc/wvdial.conf configured like this: [Dialer Defaults] Init1 = ATZ Init2 = AT+CFUN=1 Init3 = AT+CGDCONT=1,"IP","m2mstatic.apn" Modem = /dev/ttyUSB1 Phone = *99***1# Modem Type = USB Modem Username = "blank" Password = "blank" Stupid Mode = yes New PPPD = yes Baud = 460800 ISDN = 0 I tried to launch wvdial without any options or with wvdial eap-interval 1 require-chap because in my Connection Manager window, under the tab PPP the following checkboxes are checked: * EAP * MSCHAP * PAP * MSCHAPv2 * CHAP * Use BSD data compression * Use Deflate data compression * Use TCP header compression But upon launch I just get # wvdial eap-interval 1 require-chap --> WvDial: Internet dialer version 1.61 --> Warning: section [Dialer eap-interval] does not exist in wvdial.conf. --> Warning: section [Dialer 1] does not exist in wvdial.conf. --> Warning: section [Dialer require-chap] does not exist in wvdial.conf. --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: AT+CFUN=1 AT+CFUN=1 OK --> Sending: AT+CGDCONT=1,"IP","m2mstatic.apn" AT+CGDCONT=1,"IP","m2mstatic.apn" OK --> Modem initialized. --> Sending: ATDT*99***1# --> Waiting for carrier. ATDT*99***1# CONNECT 14000000 --> Carrier detected. Starting PPP immediately. --> Starting pppd at Mon Jan 22 03:26:56 2007 --> Pid of pppd: 4295 Here it waits for about a minute and then: --> pppd: H� --> pppd: H� --> Disconnecting at Mon Jan 22 03:27:57 2007 --> The PPP daemon has died: Connect script failed (exit code = 8) --> man pppd explains pppd error codes in more detail. --> Try again and look into /var/log/messages and the wvdial and pppd man pages for more information. --> Auto Reconnect will be attempted in 5 seconds --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ --> Sending: ATQ0 --> Re-Sending: ATZ --> Modem not responding. --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ --> Sending: ATQ0 --> Re-Sending: ATZ --> Modem not responding. --> Disconnecting at Mon Jan 22 03:28:19 2007 # But I can never actually reach the Internet. Exit code 8 in the pppd man page says: The serial port could not be opened. Which is ridiculous as I just opened (and **closed(!)** it with screen). Any ideas where I'm going wrong or what I'm missing? ### Edit I just found the connection manager's config file and it looks like this: [connection] id=Rogers uuid=5c4ed6f8-9ece-4888-a129-65ed5c741502 type=gsm permissions=user:ron:; [gsm] number=*99# password-flags=1 apn=m2mstatic.apn pin-flags=1 [ipv4] method=auto