Comment 8 for bug 1388072

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