Я бы по крайней мере этого ожидал,но судя по вашему вопросу это он и есть...через gnome-ppp выдает такой лог:
naliv@naliv-desktop:~$ gnome-ppp
WVCONF: /home/naliv/.wvdial.conf
GNOME PPP: STDOUT: Editing `/dev/null'.
GNOME PPP: STDERR: WvModem<*1>: Cannot set information for serial port.
GNOME PPP: STDOUT:
GNOME PPP: STDERR: ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
GNOME PPP: STDOUT: Scanning your serial ports for a modem.
GNOME PPP: STDERR: ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
GNOME PPP: STDOUT:
GNOME PPP: STDERR: ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
GNOME PPP: STDERR: WvModem<*1>: Cannot set information for serial port.
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 -- OK
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 Z -- OK
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 S0=0 -- OK
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 S0=0 &C1 -- OK
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 -- OK
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
GNOME PPP: STDERR: ttyS1<*1>: Modem Identifier: ATI -- SIEMENS
GNOME PPP: STDERR: ttyS1<*1>: Speed 4800: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Speed 9600: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Speed 19200: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Speed 38400: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Speed 57600: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Speed 115200: AT -- OK
GNOME PPP: STDERR: ttyS1<*1>: Max speed is 115200; that should be safe.
GNOME PPP: STDERR: ttyS1<*1>: ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0 -- OK
GNOME PPP: STDOUT:
GNOME PPP: STDERR: Modem Port Scan<*1>: S3
GNOME PPP: STDOUT: Found a modem on /dev/ttyS1.
GNOME PPP: STDERR: ttyS1<Info>: Speed 115200; init "ATQ0 V1 E1 S0=0 &C1 &D2 +FCLASS=0"
GNOME PPP: STDOUT: Modem configuration written to /dev/null.
GNOME PPP: Соединение...
GNOME PPP: STDERR: --> WvDial: Internet dialer version 1.60
GNOME PPP: STDERR: --> Cannot set information for serial port.
GNOME PPP: STDERR: --> Initializing modem.
GNOME PPP: STDERR: --> Sending: ATZ
GNOME PPP: STDERR: ATZ
GNOME PPP: STDERR: OK
GNOME PPP: STDERR: --> Sending: ATZ
GNOME PPP: STDERR: ATZ
GNOME PPP: STDERR: OK
GNOME PPP: STDERR: --> Sending: AT+CGDCONT=1,"IP","internet.beeline.ru"
GNOME PPP: STDERR: AT+CGDCONT=1,"IP","internet.beeline.ru"
GNOME PPP: STDERR: OK
GNOME PPP: STDERR: --> Modem initialized.
GNOME PPP: STDERR: --> Sending: ATM0L0DT*99***#
GNOME PPP: STDERR: --> Waiting for carrier.
GNOME PPP: STDERR: ATM0L0DT*99***#
GNOME PPP: STDERR: CONNECT
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> Carrier detected. Waiting for prompt.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: ~[7f]}#@!}!}#} }9}"}&} }*} } }'}"}(}"}%}&3}-[1b]b}#}%B#}%o7~
GNOME PPP: STDERR: --> PPP negotiation detected.
GNOME PPP: STDERR: --> Unable to run /usr/sbin/pppd.
GNOME PPP: STDERR: --> Check permissions, or specify a "PPPD Path" option in wvdial.conf.
GNOME PPP: STDERR: Caught signal 2: Attempting to exit gracefully...
GNOME PPP: STDERR: --> Disconnecting at Tue Nov 2 16:54:24 2010