Joseph, Thanks. I tested the Kernel. USB was dead after resume.
Linux version 3.13.11-03131106-generic (jsalisbury@gloin) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201410291902 SMP Wed Oct 29 19:04:24 UTC 2014 -- 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/1384041 Title: [Dell Precision M3800] USB is dead after resume from sleep Status in “linux” package in Ubuntu: Confirmed Bug description: After resuming from sleep (suspend to ram), all external usb ports are dead. The laptop's built in keyboard and synaptic touch pad (I think it is vonnected via internal usb, but not 100% sure) still work. Only a complete power down and reboot seem to bring back the devices. The problem does not happen with the previous kernel 3.13.0-36. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-37-generic 3.13.0-37.64 ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7 Uname: Linux 3.13.0-37-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC2: kaymes 3513 F.... pulseaudio /dev/snd/controlC1: kaymes 3513 F.... pulseaudio /dev/snd/controlC0: kaymes 3513 F.... pulseaudio CurrentDesktop: Unity Date: Wed Oct 22 16:04:20 2014 InstallationDate: Installed on 2014-07-23 (90 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) MachineType: Dell Inc. Dell Precision M3800 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-37-generic root=/dev/mapper/root-trusty ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-37-generic N/A linux-backports-modules-3.13.0-37-generic N/A linux-firmware 1.127.7 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/16/2014 dmi.bios.vendor: Dell Inc. dmi.bios.version: A05 dmi.board.name: Dell Precision M3800 dmi.board.vendor: Dell Inc. dmi.board.version: A05 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA05:bd04/16/2014:svnDellInc.:pnDellPrecisionM3800:pvrA05:rvnDellInc.:rnDellPrecisionM3800:rvrA05:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Dell Precision M3800 dmi.product.version: A05 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1384041/+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