I'll report the same or similar problem on my Lenovo Thinkpad P540P using 14.04. New kernel 3.13.0-48 broke my USB mouse and my Wifi Connectivity. Keyboard still worked though, but I am using an internal laptop keyboard rather than USB one. Reverting to 3.13.0-46 "solved" these problems.
-- 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/1440174 Title: Keyboard and Mouse don't work with latest Kernel Status in linux package in Ubuntu: Incomplete Bug description: 1) Description: Ubuntu 14.04.2 LTS Release: 14.04 2) Linux / The kernel 3) I expected my usb devices to work on the login page 4) They don't work :) ... Upon the upgrade to kernel 3.13.0-48-generic my USB devices don't work, so when I did a normal launch of my computer, I could not sign into it since my usb devices were not working. I was able to sign and and use my computer as normal when I revert to kernel 3.13.0-46-generic. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-46-generic 3.13.0-46.79 ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15 Uname: Linux 3.13.0-46-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.8 Architecture: amd64 CurrentDesktop: Unity Date: Fri Apr 3 13:06:36 2015 HibernationDevice: RESUME=UUID=ae54d2d5-4931-4fcc-8996-aa3adf03cbb6 InstallationDate: Installed on 2015-01-01 (92 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2) MachineType: Dell Inc. Inspiron 3847 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-46-generic root=UUID=32967a77-1e86-4f47-abfd-a3b98a6e9af6 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-46-generic N/A linux-backports-modules-3.13.0-46-generic N/A linux-firmware 1.127.11 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/03/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A04 dmi.board.name: 088DT1 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA04:bd04/03/2014:svnDellInc.:pnInspiron3847:pvr:rvnDellInc.:rn088DT1:rvrA01:cvnDellInc.:ct3:cvr: dmi.product.name: Inspiron 3847 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1440174/+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