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["Christopher M. Penalver" <christopher.m.penalver@xxxxxxxxx>]

Po-Hsu Lin / Gavin Guo, could you please test the latest upstream kernel available from the very top line at the top of the page (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-3.16-rc5

This can be done by clicking on the yellow circle with a black pencil
icon next to the word Tags located at the bottom of the bug description.

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's
Status as Confirmed. Please let us know your results. Thank you for your
understanding.

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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https://bugs.launchpad.net/bugs/1345895

Title:
  [Dell Inspiron 3541] USB3 stick speed drop to 480M after first use

Status in “linux” package in Ubuntu:
  Incomplete

Bug description:
  CID: 201403-14859 Dell Inspiron 3541

  The USB3 speed is 5000M when the first time you insert it after boot:

  ubuntu@201403-14859:~$ lsusb -t
  /:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
      |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
  /:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
  /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
          |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=rts5139, 480M
          |__ Port 2: Dev 6, If 0, Class=Wireless, Driver=btusb, 12M
          |__ Port 2: Dev 6, If 1, Class=Wireless, Driver=btusb, 12M
          |__ Port 4: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
          |__ Port 4: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
  /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M

  But if you remove it and plug it to the same USB3 port again, it will drop to 480M:
  ubuntu@201403-14859:~$ lsusb -t
  /:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
  /:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 480M
  /:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
          |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=rts5139, 480M
          |__ Port 2: Dev 6, If 0, Class=Wireless, Driver=btusb, 12M
          |__ Port 2: Dev 6, If 1, Class=Wireless, Driver=btusb, 12M
          |__ Port 4: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
          |__ Port 4: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
  /:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
      |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-24-generic 3.13.0-24.46 [modified: boot/vmlinuz-3.13.0-24-generic]
  ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     1660 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     1660 F.... pulseaudio
  CRDA:
   country TW:
   	(2402 - 2472 @ 40), (3, 27)
   	(5270 - 5330 @ 40), (3, 17), DFS
   	(5735 - 5815 @ 40), (3, 30)
  CurrentDesktop: Unity
  Date: Thu Jul 17 02:51:28 2014
  HibernationDevice: RESUME=UUID=43272c2a-1a8c-404b-8b62-9c6b53e1a765
  InstallationDate: Installed on 2014-07-16 (0 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Dell Inc. Inspiron 3541
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-24-generic.efi.signed root=UUID=4f3d06a7-1106-40c0-a15b-0657fd66a382 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-24-generic N/A
   linux-backports-modules-3.13.0-24-generic  N/A
   linux-firmware                             1.127
  SourcePackage: linux
  StagingDrivers: rts5139
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/20/2014
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A00
  dmi.board.name: Inspiron 3541
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.chassis.version: Not Specified
  dmi.modalias: dmi:bvnDellInc.:bvrA00:bd03/20/2014:svnDellInc.:pnInspiron3541:pvrNotSpecified:rvnDellInc.:rnInspiron3541:rvrA00:cvnDellInc.:ct8:cvrNotSpecified:
  dmi.product.name: Inspiron 3541
  dmi.product.version: Not Specified
  dmi.sys.vendor: Dell Inc.

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