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I have some trouble with ubuntu 12.04 because I can't connect to the internet using wvdial and my modem HDM LG 2100 EVDO from INWI ISP I get something like that "Could not connect to device /dev/ttyUSB1"

so please, how can I figure out this problem??

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Try use the command on Terminal: sudo wvdialconf /etc/wvdial.conf, after this, edit the conf archive: sudo gedit /etc/wvdial.conf using the phone number from your ISP.

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