I have one update. I have exact the same situation with my Lenovo laptop.
Uname: 3.13.0-85-generic #129-Ubuntu SMP Thu Mar 17 20:50:15 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux Above is explained that this issue is fixed in kernel 3.14.0. So, waiting or getting an upstream kerel is an solution. Alternatively I tried updating the BIOS and that works too for the USB problem. Download the BIOS flash utility from the Lenovo site. I flashed my BIOS from version V2.08 to version 9DCN34WW(V3.04) (9DCN34WW.exe) I had my laptop dual bootable so that I could still use Windows to execute the flash program. After flashing I had set grub back as the first bootloader but the USB problem was fixed. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1476783 Title: Lenovo B5970 USB peripherals are not detected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1476783/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
