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 Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1476783 Title: Lenovo B5970 USB peripherals are not detected Status in linux package in Ubuntu: Expired Bug description: Randomly (around twice any 3 reboot), Linux does not detect the USB peripherals of the laptop. When everything is ok, lsusb: Bus 001 Device 002: ID 8087:8000 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 004: ID 0cf3:3004 Atheros Communications, Inc. Bus 002 Device 003: ID 0bda:579c Realtek Semiconductor Corp. Bus 002 Device 002: ID 1d57:32da Xenta 2.4GHz Receiver (Keyboard and Mouse) Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub When it fails: Bus 001 Device 002: ID 8087:8000 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub I will complete the report with dmesg, lspci -vnvn, lsusb -vv when it fails. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-57-generic 3.13.0-57.95 ProcVersionSignature: Ubuntu 3.13.0-57.95-generic 3.13.11-ckt21 Uname: Linux 3.13.0-57-generic i686 ApportVersion: 2.14.1-0ubuntu3.11 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: malaise 2738 F.... pulseaudio /dev/snd/controlC0: malaise 2738 F.... pulseaudio CurrentDesktop: XFCE Date: Tue Jul 21 20:08:23 2015 HibernationDevice: RESUME=UUID=004a57bf-beb5-45f9-9b2a-bccf3e83991e InstallationDate: Installed on 2015-06-24 (26 days ago) InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2) MachineType: LENOVO 80EU ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-57-generic root=UUID=03a12f82-eda0-42a9-8bb7-0e07b73a894c ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-57-generic N/A linux-backports-modules-3.13.0-57-generic N/A linux-firmware 1.127.13 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/21/2014 dmi.bios.vendor: LENOVO dmi.bios.version: 9DCN29WW(V2.09) dmi.board.asset.tag: No Asset Tag dmi.board.name: Lenovo B50-70 dmi.board.vendor: LENOVO dmi.board.version: 31900058WIN dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo B50-70 dmi.modalias: dmi:bvnLENOVO:bvr9DCN29WW(V2.09):bd11/21/2014:svnLENOVO:pn80EU:pvrLenovoB50-70:rvnLENOVO:rnLenovoB50-70:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoB50-70: dmi.product.name: 80EU dmi.product.version: Lenovo B50-70 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1476783/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
