Hello @jsalisbury, Thank you for your reply. For old releases I booted old versions of Ubuntu that I used before upgrading to 13.10 and are still lying For new kernel, I followed your link and used URL http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.12-rc7-saucy/
Here's the summary of my tests : * On Ubuntu 12.10 device is not recognized as an Ethernet device. * On Ubuntu 13.04 device is not recognized as an Ethernet device. * On upstream kernel 3.12.0-031200rc7-generic #201310271935 Linux n55sf-l 3.12.0-031200rc7-generic #201310271935 SMP Sun Oct 27 23:37:06 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux LC_ALL=C apt-cache policy linux-image-3.12.0-031200rc7-generic linux-image-3.12.0-031200rc7-generic: Installed: 3.12.0-031200rc7.201310271935 Candidate: 3.12.0-031200rc7.201310271935 Version table: *** 3.12.0-031200rc7.201310271935 0 100 /var/lib/dpkg/status Do you want kernel logs for these 3 tests or any sort of extra details ? ** Tags added: kernel-bug-exists-upstream ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1269883 Title: Bad performance of Ethernet on USB3 port, dmesg flooded with errors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1269883/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs