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[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1435028

Title:
  Kernel does not detect already connected USB devices on boot

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The kernel does not always detect already connected USB devices on
  boot. I have an USB nic and an external mouse connected to my Laptop.
  Sometimes these devices are recognized after boot, sometimes they are
  missing.

  When they are not present after boot you have to unplug them and plug them again. This is inconvient and adds physical wear on the USB connectors.
  The kernel log shows no sign of a disconnect, so it seems the kernel does not recognize the devices as plugged in on boot.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-9-generic 3.19.0-9.9
  ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
  Uname: Linux 3.19.0-9-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.16.2-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/pcmC1D0p:   jan        1733 F...m pulseaudio
   /dev/snd/controlC1:  jan        1733 F.... pulseaudio
   /dev/snd/controlC0:  jan        1733 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Sun Mar 22 17:07:16 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-01-30 (50 days ago)
  InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Dell Inc. XPS 13 9343
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-9-generic.efi.signed root=UUID=e4431ecc-e85e-4e35-92af-58f455c46c2b ro kvm-intel.nested=1 quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-9-generic N/A
   linux-backports-modules-3.19.0-9-generic  N/A
   linux-firmware                            1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)
  dmi.bios.date: 03/12/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A02
  dmi.board.name: 0310JH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA02:bd03/12/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.

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