вот логи
vadim@vadim-laptop:~$ wvdial
--> WvDial: Internet dialer version 1.60
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: AT+CGDCONT=1,"IP","speed"
AT+CGDCONT=1,"IP","speed"
OK
--> Modem initialized.
--> Sending: ATDP*99***1#
--> Waiting for carrier.
ATDP*99***1#
CONNECT
--> Carrier detected. Waiting for prompt.
~[7f]}#@!}!}!} }<}!}$}%\}"}&} } } } }#}$@#}%}&r}#} } }'}"}(}"(a~
--> PPP negotiation detected.
--> Starting pppd at Thu Aug 21 09:08:15 2008
--> Warning: Could not modify /etc/ppp/pap-secrets: Permission denied
--> --> PAP (Password Authentication Protocol) may be flaky.
--> Warning: Could not modify /etc/ppp/chap-secrets: Permission denied
--> --> CHAP (Challenge Handshake) may be flaky.
--> Pid of pppd: 7918
--> Using interface ppp0
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> pppd: ��[06][08]��[06][08]��[06][08]
--> Disconnecting at Thu Aug 21 09:08:31 2008
--> The PPP daemon has died: A modem hung up the phone (exit code = 16)
--> 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: AT+CGDCONT=1,"IP","speed"
AT+CGDCONT=1,"IP","speed"
OK
--> Modem initialized.
--> Cannot get information for serial port.
--> Initializing modem.
--> Sending: AT+CGDCONT=1,"IP","speed"
AT+CGDCONT=1,"IP","speed"
OK
--> Modem initialized.
--> Sending: ATDP*99***1#
--> Waiting for carrier.
ATDP*99***1#
BUSY
--> The line is busy. Trying again.
--> Sending: ATDP*99***1#
--> Waiting for carrier.
ATDP*99***1#
BUSY
--> The line is busy. Trying again.
--> Sending: ATDP*99***1#
--> Waiting for carrier.
ATDP*99***1#
и так по кругу и глушить нужно только извлечениес USB.
/etc/var/log/messages
Aug 21 09:08:05 vadim-laptop kernel: [ 1994.273553] cdc_acm 4-1:1.0: ttyACM0: USB ACM device
Aug 21 09:08:15 vadim-laptop pppd[7918]: pppd 2.4.4 started by vadim, uid 1000
Aug 21 09:08:15 vadim-laptop pppd[7918]: Using interface ppp0
Aug 21 09:08:15 vadim-laptop pppd[7918]: Connect: ppp0 <--> /dev/ttyACM0
Aug 21 09:08:25 vadim-laptop pppd[7918]: Remote message: Welcome to Motorola Ezx Software Modem!
Aug 21 09:08:25 vadim-laptop pppd[7918]: PAP authentication succeeded
Aug 21 09:08:30 vadim-laptop pppd[7918]: LCP terminated by peer (^@^@^@^@^@^@)
Aug 21 09:08:30 vadim-laptop pppd[7918]: Modem hangup
Aug 21 09:08:30 vadim-laptop pppd[7918]: Connection terminated.
Aug 21 09:08:31 vadim-laptop pppd[7918]: Exit.
Aug 21 09:09:57 vadim-laptop kernel: [ 2106.628419] input: b43-phy0 as /devices/virtual/input/input37
Aug 21 09:11:00 vadim-laptop kernel: [ 2169.101194] usb 4-1: USB disconnect, address 7
Aug 21 09:11:06 vadim-laptop kernel: [ 2175.538065] usb 4-1: new full speed USB device using uhci_hcd and address 8