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[Bug 1500274] [NEW] device descriptor read/64, error -71

 

Public bug reported:

When plugging in an LG Enact cell phone in via USB, and setting it to MTP, I'm expecting it to connect. Instead, I get errors in kern.log:
Sep 27 16:32:42 monikerpc kernel: [95740.772217] usb 1-1: new low-speed USB device number 3 using xhci_hcd
Sep 27 16:32:43 monikerpc kernel: [95741.936187] usb 1-1: new low-speed USB device number 5 using xhci_hcd
Sep 27 16:32:43 monikerpc kernel: [95742.056435] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:43 monikerpc kernel: [95742.280452] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:43 monikerpc kernel: [95742.496374] usb 1-1: new low-speed USB device number 6 using xhci_hcd
Sep 27 16:32:44 monikerpc kernel: [95742.616454] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:44 monikerpc kernel: [95742.840491] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:44 monikerpc kernel: [95743.056425] usb 1-1: new low-speed USB device number 7 using xhci_hcd
Sep 27 16:32:44 monikerpc kernel: [95743.057137] usb 1-1: Device not responding to setup address.
Sep 27 16:32:44 monikerpc kernel: [95743.261282] usb 1-1: Device not responding to setup address.
Sep 27 16:32:44 monikerpc kernel: [95743.464381] usb 1-1: device not accepting address 7, error -71
Sep 27 16:32:45 monikerpc kernel: [95743.576465] usb 1-1: new low-speed USB device number 8 using xhci_hcd
Sep 27 16:32:45 monikerpc kernel: [95743.577177] usb 1-1: Device not responding to setup address.
Sep 27 16:32:45 monikerpc kernel: [95743.781228] usb 1-1: Device not responding to setup address.
Sep 27 16:32:45 monikerpc kernel: [95743.984428] usb 1-1: device not accepting address 8, error -71
Sep 27 16:32:45 monikerpc kernel: [95743.984532] usb usb1-port1: unable to enumerate USB device
Sep 27 16:32:58 monikerpc kernel: [95757.081642] usb 1-1: new low-speed USB device number 9 using xhci_hcd
Sep 27 16:32:58 monikerpc kernel: [95757.201670] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:58 monikerpc kernel: [95757.425823] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:59 monikerpc kernel: [95757.641741] usb 1-1: new low-speed USB device number 10 using xhci_hcd
Sep 27 16:32:59 monikerpc kernel: [95757.761851] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:59 monikerpc kernel: [95757.985773] usb 1-1: device descriptor read/64, error -71
Sep 27 16:32:59 monikerpc kernel: [95758.201734] usb 1-1: new low-speed USB device number 11 using xhci_hcd
Sep 27 16:32:59 monikerpc kernel: [95758.202513] usb 1-1: Device not responding to setup address.
Sep 27 16:32:59 monikerpc kernel: [95758.406515] usb 1-1: Device not responding to setup address.
Sep 27 16:33:00 monikerpc kernel: [95758.609820] usb 1-1: device not accepting address 11, error -71
Sep 27 16:33:00 monikerpc kernel: [95758.721829] usb 1-1: new low-speed USB device number 12 using xhci_hcd
Sep 27 16:33:00 monikerpc kernel: [95758.722572] usb 1-1: Device not responding to setup address.
Sep 27 16:33:00 monikerpc kernel: [95758.926585] usb 1-1: Device not responding to setup address.
Sep 27 16:33:00 monikerpc kernel: [95759.129866] usb 1-1: device not accepting address 12, error -71
Sep 27 16:33:00 monikerpc kernel: [95759.129965] usb usb1-port1: unable to enumerate USB device
Sep 27 16:41:10 monikerpc kernel: [96248.613911] usb 1-1: new low-speed USB device number 14 using xhci_hcd
Sep 27 16:41:24 monikerpc kernel: [96262.979197] usb 1-1: new low-speed USB device number 27 using xhci_hcd
Sep 27 16:41:25 monikerpc kernel: [96263.743283] usb 1-1: new low-speed USB device number 29 using xhci_hcd
Sep 27 16:42:05 monikerpc kernel: [96304.275050] usb 1-1: new low-speed USB device number 35 using xhci_hcd
Sep 27 16:42:05 monikerpc kernel: [96304.395141] usb 1-1: device descriptor read/64, error -71
Sep 27 16:42:06 monikerpc kernel: [96305.195138] usb 1-1: new low-speed USB device number 37 using xhci_hcd
Sep 27 16:42:06 monikerpc kernel: [96305.315111] usb 1-1: device descriptor read/64, error -71
Sep 27 16:42:06 monikerpc kernel: [96305.539248] usb 1-1: device descriptor read/64, error -71
Sep 27 16:42:07 monikerpc kernel: [96305.755170] usb 1-1: new low-speed USB device number 38 using xhci_hcd
Sep 27 16:42:07 monikerpc kernel: [96305.875269] usb 1-1: device descriptor read/64, error -71
Sep 27 16:42:07 monikerpc kernel: [96306.099303] usb 1-1: device descriptor read/64, error -71
Sep 27 16:42:07 monikerpc kernel: [96306.315236] usb 1-1: new low-speed USB device number 39 using xhci_hcd
Sep 27 16:42:08 monikerpc kernel: [96307.006425] usb 1-1: Device not responding to setup address.
Sep 27 16:42:09 monikerpc kernel: [96307.663353] usb 1-1: Device not responding to setup address.
Sep 27 16:42:09 monikerpc kernel: [96307.867299] usb 1-1: device not accepting address 39, error -71

I tried turning changing USB auto suspend from:
cat /sys/module/usbcore/parameters/autosuspend
2

to:
sudo su
echo -1 > /sys/module/usbcore/parameters/autosuspend

and got in kern.log:
Sep 27 17:07:54 monikerpc kernel: [97853.030421] usb 6-3: new low-speed USB device number 3 using ohci-pci
Sep 27 17:08:09 monikerpc kernel: [97868.375815] usb 6-3: new low-speed USB device number 13 using ohci-pci
Sep 27 17:08:13 monikerpc kernel: [97871.944176] usb 6-3: new low-speed USB device number 14 using ohci-pci
Sep 27 17:08:13 monikerpc kernel: [97872.084149] usb 6-3: device descriptor read/64, error -62
Sep 27 17:08:13 monikerpc kernel: [97872.340151] usb 6-3: device descriptor read/64, error -62
Sep 27 17:08:40 monikerpc kernel: [97899.242729] usb 6-3: new low-speed USB device number 23 using ohci-pci
Sep 27 17:08:40 monikerpc kernel: [97899.382713] usb 6-3: device descriptor read/64, error -62
Sep 27 17:08:41 monikerpc kernel: [97899.994664] usb 6-3: new low-speed USB device number 24 using ohci-pci
Sep 27 17:08:46 monikerpc kernel: [97905.719302] usb 6-3: new low-speed USB device number 27 using ohci-pci
Sep 27 17:08:48 monikerpc kernel: [97907.727409] usb 6-3: new low-speed USB device number 29 using ohci-pci
Sep 27 17:08:49 monikerpc kernel: [97907.867397] usb 6-3: device descriptor read/64, error -62
Sep 27 17:08:49 monikerpc kernel: [97908.111476] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:08 monikerpc kernel: [97927.269101] usb 6-3: new low-speed USB device number 33 using ohci-pci
Sep 27 17:09:08 monikerpc kernel: [97927.409230] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:24 monikerpc kernel: [97943.354580] usb 6-3: new low-speed USB device number 38 using ohci-pci
Sep 27 17:09:28 monikerpc kernel: [97946.782908] usb 6-3: new low-speed USB device number 41 using ohci-pci
Sep 27 17:09:28 monikerpc kernel: [97947.603071] usb 6-3: new low-speed USB device number 42 using ohci-pci
Sep 27 17:09:28 monikerpc kernel: [97947.743060] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:29 monikerpc kernel: [97947.986974] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:33 monikerpc kernel: [97951.923361] usb 6-3: new low-speed USB device number 48 using ohci-pci
Sep 27 17:09:33 monikerpc kernel: [97952.063382] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:36 monikerpc kernel: [97955.059648] usb 6-3: new low-speed USB device number 51 using ohci-pci
Sep 27 17:09:36 monikerpc kernel: [97955.199625] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:36 monikerpc kernel: [97955.443701] usb 6-3: device descriptor read/64, error -62
Sep 27 17:09:36 monikerpc kernel: [97955.683710] usb 6-3: new low-speed USB device number 52 using ohci-pci
Sep 27 17:09:41 monikerpc kernel: [97959.768019] usb 6-3: new low-speed USB device number 56 using ohci-pci
Sep 27 17:10:03 monikerpc kernel: [97982.146060] usb 6-3: new low-speed USB device number 72 using ohci-pci
Sep 27 17:10:03 monikerpc kernel: [97982.286094] usb 6-3: device descriptor read/64, error -62
Sep 27 17:10:03 monikerpc kernel: [97982.530091] usb 6-3: device descriptor read/64, error -62
Sep 27 17:10:04 monikerpc kernel: [97982.770088] usb 6-3: new low-speed USB device number 73 using ohci-pci
Sep 27 17:10:04 monikerpc kernel: [97982.910102] usb 6-3: device descriptor read/64, error -62
Sep 27 17:10:04 monikerpc kernel: [97983.154139] usb 6-3: device descriptor read/64, error -62
Sep 27 17:10:04 monikerpc kernel: [97983.394140] usb 6-3: new low-speed USB device number 74 using ohci-pci
Sep 27 17:10:05 monikerpc kernel: [97983.802167] usb 6-3: device not accepting address 74, error -62
Sep 27 17:10:05 monikerpc kernel: [97983.938199] usb 6-3: new low-speed USB device number 75 using ohci-pci
Sep 27 17:10:05 monikerpc kernel: [97984.346231] usb 6-3: device not accepting address 75, error -62
Sep 27 17:10:05 monikerpc kernel: [97984.346289] usb usb6-port3: unable to enumerate USB device

I recall this working in the past, so I'll have to do a bisect to
confirm this.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: linux-image-4.2.0-11-generic 4.2.0-11.13
ProcVersionSignature: Ubuntu 4.2.0-11.13-generic 4.2.1
Uname: Linux 4.2.0-11-generic x86_64
ApportVersion: 2.19-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC1:  moniker    2155 F.... pulseaudio
 /dev/snd/controlC0:  moniker    2155 F.... pulseaudio
CurrentDesktop: GNOME-Flashback:Unity
Date: Sun Sep 27 17:14:54 2015
HibernationDevice: RESUME=UUID=df17fdb9-57a4-4302-856e-3cd656848355
InstallationDate: Installed on 2014-06-21 (463 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20319
ProcFB: 0 radeondrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-11-generic.efi.signed root=UUID=a2db89ed-d599-4138-8838-0b950b6c3fbb ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M
RelatedPackageVersions:
 linux-restricted-modules-4.2.0-11-generic N/A
 linux-backports-modules-4.2.0-11-generic  N/A
 linux-firmware                            1.148
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/14/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: 8CCN34WW(V3.04)
dmi.board.asset.tag: No Asset Tag
dmi.board.name: Lenovo IdeaPad S415 Touch
dmi.board.vendor: LENOVO
dmi.board.version: 31900058Std
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Lenovo IdeaPad S415 Touch
dmi.modalias: dmi:bvnLENOVO:bvr8CCN34WW(V3.04):bd10/14/2014:svnLENOVO:pn20319:pvrLenovoIdeaPadS415Touch:rvnLENOVO:rnLenovoIdeaPadS415Touch:rvr31900058Std:cvnLENOVO:ct10:cvrLenovoIdeaPadS415Touch:
dmi.product.name: 20319
dmi.product.version: Lenovo IdeaPad S415 Touch
dmi.sys.vendor: LENOVO

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Triaged


** Tags: amd64 apport-bug latest-bios-3.04 regression-release wily

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https://bugs.launchpad.net/bugs/1500274

Title:
  device descriptor read/64, error -71

Status in linux package in Ubuntu:
  Triaged

Bug description:
  When plugging in an LG Enact cell phone in via USB, and setting it to MTP, I'm expecting it to connect. Instead, I get errors in kern.log:
  Sep 27 16:32:42 monikerpc kernel: [95740.772217] usb 1-1: new low-speed USB device number 3 using xhci_hcd
  Sep 27 16:32:43 monikerpc kernel: [95741.936187] usb 1-1: new low-speed USB device number 5 using xhci_hcd
  Sep 27 16:32:43 monikerpc kernel: [95742.056435] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:43 monikerpc kernel: [95742.280452] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:43 monikerpc kernel: [95742.496374] usb 1-1: new low-speed USB device number 6 using xhci_hcd
  Sep 27 16:32:44 monikerpc kernel: [95742.616454] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:44 monikerpc kernel: [95742.840491] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:44 monikerpc kernel: [95743.056425] usb 1-1: new low-speed USB device number 7 using xhci_hcd
  Sep 27 16:32:44 monikerpc kernel: [95743.057137] usb 1-1: Device not responding to setup address.
  Sep 27 16:32:44 monikerpc kernel: [95743.261282] usb 1-1: Device not responding to setup address.
  Sep 27 16:32:44 monikerpc kernel: [95743.464381] usb 1-1: device not accepting address 7, error -71
  Sep 27 16:32:45 monikerpc kernel: [95743.576465] usb 1-1: new low-speed USB device number 8 using xhci_hcd
  Sep 27 16:32:45 monikerpc kernel: [95743.577177] usb 1-1: Device not responding to setup address.
  Sep 27 16:32:45 monikerpc kernel: [95743.781228] usb 1-1: Device not responding to setup address.
  Sep 27 16:32:45 monikerpc kernel: [95743.984428] usb 1-1: device not accepting address 8, error -71
  Sep 27 16:32:45 monikerpc kernel: [95743.984532] usb usb1-port1: unable to enumerate USB device
  Sep 27 16:32:58 monikerpc kernel: [95757.081642] usb 1-1: new low-speed USB device number 9 using xhci_hcd
  Sep 27 16:32:58 monikerpc kernel: [95757.201670] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:58 monikerpc kernel: [95757.425823] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:59 monikerpc kernel: [95757.641741] usb 1-1: new low-speed USB device number 10 using xhci_hcd
  Sep 27 16:32:59 monikerpc kernel: [95757.761851] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:59 monikerpc kernel: [95757.985773] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:32:59 monikerpc kernel: [95758.201734] usb 1-1: new low-speed USB device number 11 using xhci_hcd
  Sep 27 16:32:59 monikerpc kernel: [95758.202513] usb 1-1: Device not responding to setup address.
  Sep 27 16:32:59 monikerpc kernel: [95758.406515] usb 1-1: Device not responding to setup address.
  Sep 27 16:33:00 monikerpc kernel: [95758.609820] usb 1-1: device not accepting address 11, error -71
  Sep 27 16:33:00 monikerpc kernel: [95758.721829] usb 1-1: new low-speed USB device number 12 using xhci_hcd
  Sep 27 16:33:00 monikerpc kernel: [95758.722572] usb 1-1: Device not responding to setup address.
  Sep 27 16:33:00 monikerpc kernel: [95758.926585] usb 1-1: Device not responding to setup address.
  Sep 27 16:33:00 monikerpc kernel: [95759.129866] usb 1-1: device not accepting address 12, error -71
  Sep 27 16:33:00 monikerpc kernel: [95759.129965] usb usb1-port1: unable to enumerate USB device
  Sep 27 16:41:10 monikerpc kernel: [96248.613911] usb 1-1: new low-speed USB device number 14 using xhci_hcd
  Sep 27 16:41:24 monikerpc kernel: [96262.979197] usb 1-1: new low-speed USB device number 27 using xhci_hcd
  Sep 27 16:41:25 monikerpc kernel: [96263.743283] usb 1-1: new low-speed USB device number 29 using xhci_hcd
  Sep 27 16:42:05 monikerpc kernel: [96304.275050] usb 1-1: new low-speed USB device number 35 using xhci_hcd
  Sep 27 16:42:05 monikerpc kernel: [96304.395141] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:42:06 monikerpc kernel: [96305.195138] usb 1-1: new low-speed USB device number 37 using xhci_hcd
  Sep 27 16:42:06 monikerpc kernel: [96305.315111] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:42:06 monikerpc kernel: [96305.539248] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:42:07 monikerpc kernel: [96305.755170] usb 1-1: new low-speed USB device number 38 using xhci_hcd
  Sep 27 16:42:07 monikerpc kernel: [96305.875269] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:42:07 monikerpc kernel: [96306.099303] usb 1-1: device descriptor read/64, error -71
  Sep 27 16:42:07 monikerpc kernel: [96306.315236] usb 1-1: new low-speed USB device number 39 using xhci_hcd
  Sep 27 16:42:08 monikerpc kernel: [96307.006425] usb 1-1: Device not responding to setup address.
  Sep 27 16:42:09 monikerpc kernel: [96307.663353] usb 1-1: Device not responding to setup address.
  Sep 27 16:42:09 monikerpc kernel: [96307.867299] usb 1-1: device not accepting address 39, error -71

  I tried turning changing USB auto suspend from:
  cat /sys/module/usbcore/parameters/autosuspend
  2

  to:
  sudo su
  echo -1 > /sys/module/usbcore/parameters/autosuspend

  and got in kern.log:
  Sep 27 17:07:54 monikerpc kernel: [97853.030421] usb 6-3: new low-speed USB device number 3 using ohci-pci
  Sep 27 17:08:09 monikerpc kernel: [97868.375815] usb 6-3: new low-speed USB device number 13 using ohci-pci
  Sep 27 17:08:13 monikerpc kernel: [97871.944176] usb 6-3: new low-speed USB device number 14 using ohci-pci
  Sep 27 17:08:13 monikerpc kernel: [97872.084149] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:08:13 monikerpc kernel: [97872.340151] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:08:40 monikerpc kernel: [97899.242729] usb 6-3: new low-speed USB device number 23 using ohci-pci
  Sep 27 17:08:40 monikerpc kernel: [97899.382713] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:08:41 monikerpc kernel: [97899.994664] usb 6-3: new low-speed USB device number 24 using ohci-pci
  Sep 27 17:08:46 monikerpc kernel: [97905.719302] usb 6-3: new low-speed USB device number 27 using ohci-pci
  Sep 27 17:08:48 monikerpc kernel: [97907.727409] usb 6-3: new low-speed USB device number 29 using ohci-pci
  Sep 27 17:08:49 monikerpc kernel: [97907.867397] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:08:49 monikerpc kernel: [97908.111476] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:08 monikerpc kernel: [97927.269101] usb 6-3: new low-speed USB device number 33 using ohci-pci
  Sep 27 17:09:08 monikerpc kernel: [97927.409230] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:24 monikerpc kernel: [97943.354580] usb 6-3: new low-speed USB device number 38 using ohci-pci
  Sep 27 17:09:28 monikerpc kernel: [97946.782908] usb 6-3: new low-speed USB device number 41 using ohci-pci
  Sep 27 17:09:28 monikerpc kernel: [97947.603071] usb 6-3: new low-speed USB device number 42 using ohci-pci
  Sep 27 17:09:28 monikerpc kernel: [97947.743060] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:29 monikerpc kernel: [97947.986974] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:33 monikerpc kernel: [97951.923361] usb 6-3: new low-speed USB device number 48 using ohci-pci
  Sep 27 17:09:33 monikerpc kernel: [97952.063382] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:36 monikerpc kernel: [97955.059648] usb 6-3: new low-speed USB device number 51 using ohci-pci
  Sep 27 17:09:36 monikerpc kernel: [97955.199625] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:36 monikerpc kernel: [97955.443701] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:09:36 monikerpc kernel: [97955.683710] usb 6-3: new low-speed USB device number 52 using ohci-pci
  Sep 27 17:09:41 monikerpc kernel: [97959.768019] usb 6-3: new low-speed USB device number 56 using ohci-pci
  Sep 27 17:10:03 monikerpc kernel: [97982.146060] usb 6-3: new low-speed USB device number 72 using ohci-pci
  Sep 27 17:10:03 monikerpc kernel: [97982.286094] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:10:03 monikerpc kernel: [97982.530091] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:10:04 monikerpc kernel: [97982.770088] usb 6-3: new low-speed USB device number 73 using ohci-pci
  Sep 27 17:10:04 monikerpc kernel: [97982.910102] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:10:04 monikerpc kernel: [97983.154139] usb 6-3: device descriptor read/64, error -62
  Sep 27 17:10:04 monikerpc kernel: [97983.394140] usb 6-3: new low-speed USB device number 74 using ohci-pci
  Sep 27 17:10:05 monikerpc kernel: [97983.802167] usb 6-3: device not accepting address 74, error -62
  Sep 27 17:10:05 monikerpc kernel: [97983.938199] usb 6-3: new low-speed USB device number 75 using ohci-pci
  Sep 27 17:10:05 monikerpc kernel: [97984.346231] usb 6-3: device not accepting address 75, error -62
  Sep 27 17:10:05 monikerpc kernel: [97984.346289] usb usb6-port3: unable to enumerate USB device

  I recall this working in the past, so I'll have to do a bisect to
  confirm this.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-11-generic 4.2.0-11.13
  ProcVersionSignature: Ubuntu 4.2.0-11.13-generic 4.2.1
  Uname: Linux 4.2.0-11-generic x86_64
  ApportVersion: 2.19-0ubuntu1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  moniker    2155 F.... pulseaudio
   /dev/snd/controlC0:  moniker    2155 F.... pulseaudio
  CurrentDesktop: GNOME-Flashback:Unity
  Date: Sun Sep 27 17:14:54 2015
  HibernationDevice: RESUME=UUID=df17fdb9-57a4-4302-856e-3cd656848355
  InstallationDate: Installed on 2014-06-21 (463 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: LENOVO 20319
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-11-generic.efi.signed root=UUID=a2db89ed-d599-4138-8838-0b950b6c3fbb ro quiet splash crashkernel=384M-:128M crashkernel=384M-:128M crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M nomdmonddf nomdmonisw crashkernel=384M-:128M
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-11-generic N/A
   linux-backports-modules-4.2.0-11-generic  N/A
   linux-firmware                            1.148
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 10/14/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8CCN34WW(V3.04)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lenovo IdeaPad S415 Touch
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058Std
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo IdeaPad S415 Touch
  dmi.modalias: dmi:bvnLENOVO:bvr8CCN34WW(V3.04):bd10/14/2014:svnLENOVO:pn20319:pvrLenovoIdeaPadS415Touch:rvnLENOVO:rnLenovoIdeaPadS415Touch:rvr31900058Std:cvnLENOVO:ct10:cvrLenovoIdeaPadS415Touch:
  dmi.product.name: 20319
  dmi.product.version: Lenovo IdeaPad S415 Touch
  dmi.sys.vendor: LENOVO

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