Comment 26 for bug 469881

Without using the dgc modem driver, I upgraded to 9.10, and removed modem manager:
apt-get remove modem manager.

When I tried gnome-ppp I got the following response:

john@john-laptop:~$ sudo apt-get remove modemmanager
[sudo] password for john:
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
  binutils-static
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  modemmanager
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 463kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 127435 files and directories currently installed.)
Removing modemmanager ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
john@john-laptop:~$ sudo gnome-ppp
WVCONF: /root/.wvdial.conf
GNOME PPP: Connecting...
GNOME PPP: STDERR: --> WvDial: Internet dialer version 1.60
GNOME PPP: STDERR: --> Cannot get information for serial port.
GNOME PPP: STDERR: --> Initializing modem.
GNOME PPP: STDERR: --> Sending: ATZ
GNOME PPP: STDERR: --> Sending: ATQ0
GNOME PPP: STDERR: --> Re-Sending: ATZ
GNOME PPP: STDERR: --> Modem not responding.

John