I just compared the "case_*_messages" files, and it seems that the reason of the modem not being listed/detected/appearing in case 1, is because the "cdc_ether" driver doesn't start upon boot. <div class="gmail_quote">On Thu, Nov 22, 2012 at 11:31 AM, James Cameron <<a href="mailto:quozl@laptop.org" target="_blank">quozl@laptop.org</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> That's very interesting. So it is the pen drive causing the problem. Does a pen drive of a different manufacturer also cause the problem? (I see a similar problem on XO-4 B1 with 13.1.0 os12, ... if any pen drive is attached the modem is detected by the kernel, not shown by frame, and not shown by "nmcli dev", but as I know the USB host has power design problems, I'm not sure how reliable this fact is.) #12340 <div class="HOEnZb"><div class="h5"> -- James Cameron <a href="http://quozl.linux.org.au/" target="_blank">http://quozl.linux.org.au/</a> </div></div></blockquote></div> Regards, Ajay Garg Dextrose Developer Activity Central: <a href="http://activitycentral.com/" style="font-family:arial,sans-serif;font-size:13px;background-color:rgb(255,255,255)" target="_blank">http://activitycentral.com</a>