I'm deeply sorry I don't find how to edit my last post. see attachement for lsusb ; lspci -vvnn ; dmesg ; lshw
** Attachment added: "lsusb + lspci -vvnn + dmesg + lshw" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/183839/+attachment/2650617/+files/lsusb%20%2B%20lspci%20-vvnn%20%2B%20dmesg%20%2B%20lshw -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/183839 Title: USB file transfers extremely slow and eventually cause kernel freezes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/183839/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs