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[Adam Lyall <1388072@xxxxxxxxxxxxxxxxxx>]

I've been running Linux kernel 3.18-rc3 for 6 days and just run into the issue. I think now that the length of time a system has been running without a reboot can cause the issue as I only suspended for an hour and upon resume the usb devices on the dock were no longer working until I un-docked and re-docked. The usual dmesg errors were present:
[265522.355189] usb 1-3.4: USB disconnect, device number 8
[265524.344756] usb 1-3.4: new low-speed USB device number 9 using xhci_hcd
[265524.468746] usb 1-3.4: New USB device found, idVendor=045e, idProduct=00dd
[265524.468752] usb 1-3.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[265524.468755] usb 1-3.4: Product: Comfort Curve Keyboard 2000
[265524.468757] usb 1-3.4: Manufacturer: Microsoft
[265524.468983] usb 1-3.4: ep 0x81 - rounding interval to 64 microframes, ep desc says 80 microframes
[265524.468989] usb 1-3.4: ep 0x82 - rounding interval to 64 microframes, ep desc says 80 microframes
[265524.468999] xhci_hcd 0000:00:14.0: Not enough bandwidth on HS bus for newly activated TT.
[265524.469004] xhci_hcd 0000:00:14.0: Not enough bandwidth
[265524.469011] usb 1-3.4: can't set config #1, error -12
[265539.568853] ACPI: \_SB_.GDCK: undocking
[265539.572735] ata2: exception Emask 0x10 SAct 0x0 SErr 0x4090000 action 0xe frozen
[265539.572742] ata2: irq_stat 0x00400040, connection status changed
[265539.572749] ata2: SError: { PHYRdyChg 10B8B DevExch }
[265539.572758] ata2: hard resetting link
[265540.296949] ata2: SATA link down (SStatus 0 SControl 300)
[265545.298281] ata2: hard resetting link
[265545.618332] ata2: SATA link down (SStatus 0 SControl 300)
[265545.618341] ata2: limiting SATA link speed to 1.5 Gbps
[265546.197581] usb 1-3: USB disconnect, device number 2
[265546.197587] usb 1-3.3: USB disconnect, device number 7
[265546.197906] usb 1-3.4: USB disconnect, device number 9
[265546.823120] thinkpad_acpi: EC reports that Thermal Table has changed
[265546.926796] thinkpad_acpi: undocked from hotplug port replicator
[265546.926878] ACPI: \_SB_.GDCK: undocking


** Tags added: kernel-bug-exists-upstream-3.18-rc3

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

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https://bugs.launchpad.net/bugs/1388072

Title:
  [Lenovo ThinkPad X230 Tablet] USB devices in docking station no longer
  working after resuming from long standby

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  When my Lenovo Thinkpad x230t is attached to an Ultrabase Series 3
  dock and suspended for many hours, upon resume the USB ports on the
  dock, but not the laptop, stop working with peripherals (mouse,
  keyboard, usb drive).

  Shorter periods of standby seem unaffected unless the issues has
  already occurred. E.g. After a fresh boot if I suspend my laptop and
  resume after less than about 8 hours (I am not at all certain if the
  period of time is related. Just general observation), everything will
  continue to work fine. If however the issue has occurred at some point
  and I have disconnected and reconnected to work around the issue, and
  then I suspend for a short period of time (20 seconds) and resume, the
  dock's USB ports will no longer work unless I again disconnect the
  laptop from the dock and reconnect. So it seems once the issue has
  happened it will continue to happen until I reboot.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: linux-image-3.16.0-23-generic 3.16.0-23.31
  ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
  Uname: Linux 3.16.0-23-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  magicmyth   4476 F.... pulseaudio
  CurrentDesktop: KDE
  Date: Fri Oct 31 12:45:03 2014
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=9204d11f-56e2-4eff-9bae-80cd829eef89
  InstallationDate: Installed on 2012-08-15 (807 days ago)
  InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
  MachineType: LENOVO 3435CTO
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic root=UUID=8ceeee85-b9c7-41ec-8e1c-24eb1d5e089b ro quiet splash zswap.enabled=1 vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-23-generic N/A
   linux-backports-modules-3.16.0-23-generic  N/A
   linux-firmware                             1.138
  SourcePackage: linux
  UpgradeStatus: Upgraded to utopic on 2014-10-25 (5 days ago)
  dmi.bios.date: 05/28/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GCET99WW (2.59 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 3435CTO
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGCET99WW(2.59):bd05/28/2014:svnLENOVO:pn3435CTO:pvrThinkPadX230Tablet:rvnLENOVO:rn3435CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 3435CTO
  dmi.product.version: ThinkPad X230 Tablet
  dmi.sys.vendor: LENOVO

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