Hi, I have a USB modem EVDO (AC8700). I am using wvdial to as the dial program. Below is my wvdial.conf ===================================== [Dialer Defaults] Modem = /dev/ttyUSB0 Baud = 921600 Init1 = ATZ Init2 = ATQ0 V1 E1 S0=0 &C1 &D2 Init3 = Area Code = Phone = #555 Username = 20111111 Password = 20111111 Ask Password = 0 Dial Command = ATDT Stupid Mode = 1 Compuserve = 0 Force Address = Idle Seconds = DialMessage1 = DialMessage2 = ISDN = 0 Auto DNS = 1 ===================================== The problem is i am not able to redial after i have disconnected wvdial. Below is the trace from wvdial: ===================================== linux-wl4r:~ # wvdial --> WvDial: Internet dialer version 1.56 (abuild@mandelbrot) --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ATZ OK --> Sending: ATQ0 V1 E1 S0=0 &C1 &D2 ATQ0 V1 E1 S0=0 &C1 &D2 OK --> Modem initialized. --> Sending: ATDT#555 --> Waiting for carrier. ATDT#555 CONNECT --> Carrier detected. Starting PPP immediately. --> Starting pppd at Tue Jan 29 22:53:08 2008 --> Pid of pppd: 4034 --> Using interface ppp0 --> pppd: [08][17][06][08] --> pppd: [08][17][06][08] --> pppd: [08][17][06][08] --> pppd: [08][17][06][08] --> pppd: [08][17][06][08] --> local IP address 10.1.0.9 --> pppd: [08][17][06][08] --> remote IP address 10.64.64.64 --> pppd: [08][17][06][08] --> primary DNS address 203.90.87.125 --> pppd: [08][17][06][08] --> secondary DNS address 218.248.240.22 --> pppd: [08][17][06][08] --> Script /etc/ppp/ip-up run successful --> Default route Ok. --> Nameserver (DNS) Ok. --> Connected... Press Ctrl-C to disconnect --> pppd: [08][17][06][08] l l l l Caught signal 2: Attempting to exit gracefully... --> Terminating on signal 15 --> pppd: [08][17][06][08] --> Connect time 83.2 minutes. --> pppd: [08][17][06][08] --> pppd: [08][17][06][08] --> Disconnecting at Wed Jan 30 00:16:21 2008 linux-wl4r:~ # wvdial --> WvDial: Internet dialer version 1.56 (abuild@mandelbrot) --> Cannot get information for serial port. --> Initializing modem. --> Sending: ATZ ~[7f]}#@!}!}2} }9}"}&} } } } }#}%B#}%}%}&} };[[0f]}'}"}(}"qj~~[7f]}#@!}!}3} }9}"}&} } } } }#}%B#}%}%}&} };2 }'}"}(}"}:[19]~~[7f]}#@!}!}4} }9}"}&} } } } }#}%B#}%}%}&} };u0}'}"}(}"B1~~[7f]}#@!}!}5} }9}"}&} } } } }#}%B#}%}%}&} };HW}'}"}(}"3[03]~~[7f]}#@!}!}6} }9}"}&} } } } }#}%B#}%}%}&} };E!}'}"}(}"[1e][7f]~~[7f]}#@!}!}7} }9}"}&} } } } }#}%B#}%}%}&} }: d}'}"}(}"+`~~[7f]}#@!}!}8} }9}"}&} } } } }#}%B#}%}%}&} };wl}'}"}(}"E[14]~~[7f]}#@!}!}9} }9}"}&} } } } }#}%B#}%}%}&} };6y}'}"}(}":Q~~[7f]}#@!}!}:} }9}"}&} } } } }#}%B#}%}%}&} }:[12]C}'}"}(}"4+~ --> Sending: ATQ0 --> Re-Sending: ATZ~[7f]}#@!}!}0} }9}"}&} } } } }#}%B#}%}%}&} };RT}'}"}(}"QA~~[7f]}#@!}!}1} }9}"}&} } } } }#}%B#}%}%}&} }:'k}'}"}(}"}<e~~[7f]}#@!}!}2} }9}"}&}} } } }#}%B#}%}%}&} };V)}'}"}(}"'}$~~[7f]}#@!}!}3} }9}"}&} } } } }#}%B#}%}%}&} };}2b}'}"}(}"[05]A~~[7f]}#@!}!}4} }9}"}&} } } } }#}%B#}%}%}&} };}0]}'}"}(}"fu~~[7f]}#@!}!}5} }9}"}&} } } } }#}%B#}%}%}&} };#[1f]}'}"}(}"%2~~[7f]}#@!}!}6} }9}"}&} } } } }#}%B#}%}%}&} };w]}'}"}(}"[R~~[7f]}#@!}!}7} }9}"}&} } } } }#}%B#}%}%}&} };>U}'}"}(}"}=t~~[7f]}#@!}!}8} }9}"}&} } } } }#}%B#}%}%}&} };[c}'}"}(}"-J~ --> Modem not responding. linux-wl4r:~ # ===================================== Below is my var/log/messages trace ===================================== linux-wl4r:~ # modprobe -v usbserial vendor=0x05c6 product=0x6000 insmod /lib/modules/2.6.22.5-31-default/kernel/drivers/usb/serial/usbserial.ko vendor=0x05c6 product=0x6000 linux-wl4r:~ # smpppd -d linux-wl4r:~ # tail -f /var/log/messages Jan 29 22:52:43 linux-wl4r kernel: drivers/usb/serial/usb-serial.c: USB Serial support registered for generic Jan 29 22:52:43 linux-wl4r kernel: usbserial_generic 3-2:1.0: generic converter detected Jan 29 22:52:43 linux-wl4r kernel: usb 3-2: generic converter now attached to ttyUSB0 Jan 29 22:52:43 linux-wl4r kernel: usbserial_generic 3-2:1.1: generic converter detected Jan 29 22:52:43 linux-wl4r kernel: usb 3-2: generic converter now attached to ttyUSB1 Jan 29 22:52:43 linux-wl4r kernel: usbserial_generic 3-2:1.2: generic converter detected Jan 29 22:52:43 linux-wl4r kernel: usb 3-2: generic converter now attached to ttyUSB2 Jan 29 22:52:43 linux-wl4r kernel: usbcore: registered new interface driver usbserial_generic Jan 29 22:52:43 linux-wl4r kernel: drivers/usb/serial/usb-serial.c: USB Serial Driver core Jan 29 22:52:46 linux-wl4r smpppd[4012]: smpppd version 1.59 started l l l Jan 29 22:53:08 linux-wl4r pppd[4034]: Plugin passwordfd.so loaded. Jan 29 22:53:08 linux-wl4r kernel: PPP generic driver version 2.4.2 Jan 29 22:53:08 linux-wl4r pppd[4034]: pppd 2.4.4 started by root, uid 0 Jan 29 22:53:08 linux-wl4r pppd[4034]: Using interface ppp0 Jan 29 22:53:08 linux-wl4r pppd[4034]: Connect: ppp0 <--> /dev/ttyUSB0 Jan 29 22:53:11 linux-wl4r pppd[4034]: CHAP authentication succeeded Jan 29 22:53:11 linux-wl4r pppd[4034]: CHAP authentication succeeded Jan 29 22:53:11 linux-wl4r kernel: PPP BSD Compression module registered Jan 29 22:53:11 linux-wl4r kernel: PPP Deflate Compression module registered Jan 29 22:53:12 linux-wl4r pppd[4034]: Could not determine remote IP address: defaulting to 10.64.64.64 Jan 29 22:53:12 linux-wl4r pppd[4034]: local IP address 10.1.0.9 Jan 29 22:53:12 linux-wl4r pppd[4034]: remote IP address 10.64.64.64 Jan 29 22:53:12 linux-wl4r pppd[4034]: primary DNS address 203.90.87.121 Jan 29 22:53:12 linux-wl4r pppd[4034]: secondary DNS address 218.248.240.23 Jan 29 22:53:12 linux-wl4r modify_resolvconf: Service pppd modified /etc/resolv.conf. See info block in this file Jan 29 22:53:12 linux-wl4r SuSEfirewall2: Setting up rules from /etc/sysconfig/SuSEfirewall2 ... Jan 29 22:53:12 linux-wl4r SuSEfirewall2: using default zone 'ext' for interface ppp0 Jan 29 22:53:12 linux-wl4r SuSEfirewall2: batch committing... Jan 29 22:53:12 linux-wl4r SuSEfirewall2: Firewall rules successfully set Jan 29 22:53:12 linux-wl4r pppd[4034]: Script /etc/ppp/ip-up finished (pid 4070), status = 0x0 Jan 29 22:53:36 linux-wl4r kernel: NET: Registered protocol family 17 Jan 29 22:53:37 linux-wl4r kernel: device eth0 entered promiscuous mode Jan 29 22:53:37 linux-wl4r kernel: device ppp0 entered promiscuous mode Jan 29 22:53:37 linux-wl4r kernel: device lo entered promiscuous mode Jan 29 22:53:44 linux-wl4r kernel: device eth0 left promiscuous mode Jan 29 22:53:44 linux-wl4r kernel: device ppp0 left promiscuous mode Jan 29 22:53:44 linux-wl4r kernel: device lo left promiscuous mode Jan 29 22:53:44 linux-wl4r kernel: device ppp0 entered promiscuous mode Jan 29 22:54:24 linux-wl4r gconfd (root-4293): starting (version 2.20.0), pid 4293 user 'root' Jan 29 22:54:24 linux-wl4r gconfd (root-4293): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration s ource at position 0 Jan 29 22:54:24 linux-wl4r gconfd (root-4293): Resolved address "xml:readwrite:/root/.gconf" to a writable configuration source at position1 Jan 29 22:54:24 linux-wl4r gconfd (root-4293): Resolved address "xml:readonly:/etc/gconf/gconf.xml.defaults" to a read-only configuration source at position 2 Jan 29 22:54:24 linux-wl4r gconfd (root-4293): Resolved address "xml:readonly:/etc/gconf/gconf.xml.schemas" to a read-only configuration source at position 3 Jan 29 22:57:07 linux-wl4r kernel: device ppp0 left promiscuous modelll Jan 29 23:20:03 linux-wl4r su: (to root) root on /dev/pts/4 Jan 29 23:21:52 linux-wl4r smartd[3529]: Device: /dev/sda, SMART Usage Attribute: 194 Temperature_Celsius changed from 130 to 137 Jan 29 23:35:27 linux-wl4r kernel: ata2.00: 16 bytes trailing data Jan 29 23:37:18 linux-wl4r kernel: ISO 9660 Extensions: Microsoft Joliet Level 1 Jan 29 23:37:18 linux-wl4r kernel: ISOFS: changing to secondary root Jan 29 23:37:18 linux-wl4r hald: mounted /dev/sr0 on behalf of uid 0 Jan 29 23:51:36 linux-wl4r syslog-ng[2463]: STATS: dropped 0 Jan 29 23:51:52 linux-wl4r smartd[3529]: Device: /dev/sda, SMART Usage Attribute: 194 Temperature_Celsius changed from 137 to 141lll Jan 30 00:16:21 linux-wl4r pppd[4034]: Terminating on signal 15 Jan 30 00:16:21 linux-wl4r pppd[4034]: Connect time 83.2 minutes. Jan 30 00:16:21 linux-wl4r pppd[4034]: Sent 1093442 bytes, received 6868181 bytes. Jan 30 00:16:21 linux-wl4r modify_resolvconf: restored /etc/resolv.conf.saved.by.pppd.ppp0 to /etc/resolv.conf Jan 30 00:16:21 linux-wl4r SuSEfirewall2: Setting up rules from /etc/sysconfig/SuSEfirewall2 ... Jan 30 00:16:21 linux-wl4r SuSEfirewall2: batch committing... Jan 30 00:16:21 linux-wl4r SuSEfirewall2: Firewall rules successfully setllll ===================================== Any ideas why this is happening??? -- umesh3034