Comment 28 for bug 408555

Hi muratsever,
as your modem is identified correctly (0x0031) check IF you can have a 'steady' existance of ttyUSB0, 1 & 2 :

- dmesg
- wait 20 seconds
- dmesg
- wait 20 seconds
- dmesg

If there are no 'ttyUSB2 disconnected...' then try to 'setup a new broadband connection':

- right click network manager icon
- edit connections
- mobile broadband
- add
- ...

If you want to try other methods to connect like wvdial, gnome-ppp etc (you need to install them first from Synaptic Package Manager or Ubuntu Software Center) AND if you have the 'looping' creation/disconnection of ttyUSB2 you can stop network manager and kill modem manager using the procedure of comment#9 which works with beta/rc/final version of Ubuntu 9.10 (comment#3 was for earlier alphas testing versions):

- boot without modem
- from terminal run: sudo stop network-manager
- from terminal run: sudo killall modem-manager
- check that no network/modem managers are running (from terminal): ps -A | grep -i manager
- use any other way to connect (wvdial, pppd commaaaaand, etc)

Note that wvdial, gnome-ppp and some other 'alternatives' are not included into standard distribution and must be installed separately. Most of those solutions require configuration files.

MF636 and wvdial (Ubuntu 8.10): http://ubuntuforums.org/showpost.php?p=6511814&postcount=2
MF636 on pre-released versions of 9.10: http://ubuntuforums.org/showthread.php?t=1202430

Regards,
George