USB EVDO 3G modem not detected 12.04

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http://ubuntuforums.org – I've posted this before and searched for the solution but still nothing. I'm using a Lenovo G570 laptop installed with Ubuntu Precise Pangolin 12.04 64-bit beta2. The wireless modem that I use, Capitel CDMA EVDO 3G modem (device id - 1c9e:9e00) does not get detected in 12.04. Hence I cannot configure it from Network Manager. This same modem gets detected fine and worked well in Ubuntu 10.10, 11.04 and 11.10. How can I make it work or troubleshoot why it's not being detected when plugged in? (Hardware)