I think this problem is related to this: https://bugs.launchpad.net/linux/+bug/350739
Here I am attaching some log files that can be useful: ** Attachment added: "dmesg.log" http://launchpadlibrarian.net/24979044/dmesg.log -- MTP is preferred over UMS/MSC https://bugs.launchpad.net/bugs/330383 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs