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I have a 3g usb modem which was working well on my laptop and after I installed another usb software it stopped working. .. I uninstalled both softwares and then installed the first software again but with no use... this uxb still working on my desktop computer. . What happened to my laptop and how can I get it work again??

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Hi Sinchi, we need to know what 3G USB Modem you are using, what Ubuntu version you are using and any other additional information you can provide so we can help you faster. –  Luis Alvarado Aug 8 '13 at 10:24
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