Hi, In the dmesg, you can see "bad CDC description" message. I guess that can give us a clue as to where is the problem.
I did a search and found the below alrticle, please go through it and see if that help you any way :) http://ubuntuforums.org/showthread.php?t=1577135 Regards, Sathya On Tue, Nov 11, 2014 at 4:50 PM, Hari Bala Kumaran < dharibalakuma...@gmail.com> wrote: > Hi, > This is hari , we found the details > > /bin/dmesg : > > [16739.059562] usb 1-3: USB disconnect, device number 4 > [20711.452030] usb 1-3: new high-speed USB device number 5 using ehci_hcd > [20711.587250] usb 1-3: New USB device found, idVendor=0421, idProduct=0664 > [20711.587257] usb 1-3: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [20711.587262] usb 1-3: Product: Nokia 301 Dual SIM > [20711.587267] usb 1-3: Manufacturer: Nokia > [20711.587270] usb 1-3: SerialNumber: 357276053590407 > [20711.605059] cdc_acm 1-3:1.3: ttyACM0: USB ACM device > [20711.606415] usb 1-3: bad CDC descriptors > [20711.606496] usb 1-3: bad CDC descriptors > [28232.258866] usb 1-3: USB disconnect, device number 5 > > > Which version of Ubuntu do you use? > > Ubuntu 12.04 > > > Regards > Haribalakumaran > _______________________________________________ > ILUGC Mailing List: > http://www.ae.iitm.ac.in/mailman/listinfo/ilugc > ILUGC Mailing List Guidelines: > http://ilugc.in/mailinglist-guidelines > _______________________________________________ ILUGC Mailing List: http://www.ae.iitm.ac.in/mailman/listinfo/ilugc ILUGC Mailing List Guidelines: http://ilugc.in/mailinglist-guidelines
