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[Maga Laan <magalaan@xxxxxxxxx>]

I see. Thanks for the explanation.
Maybe you should report this as a bug ;-)

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https://bugs.launchpad.net/bugs/883646

Title:
  "ERROR no room on ep ring" fills up syslog and hard disk in minutes

Status in The Linux Kernel:
  Invalid
Status in “linux” package in Ubuntu:
  Invalid

Bug description:
  I am running a fresh install of Ubuntu Oneiric 11.10 64-bit. After
  installing Gnome15 to use the extra features of my Logitech G15
  keyboard via the USB 3.0 connector on my system. The G15 is a low
  speed USB 2.0 device.

  Post from dmesg:
  [   62.496997] xhci_hcd 0000:05:00.0: ERROR no room on ep ring
  [   62.497005] usb 5-2.4: usbfs: usb_submit_urb returned -12
  [   62.499905] xhci_hcd 0000:05:00.0: ERROR no room on ep ring
  [   62.499913] usb 5-2.4: usbfs: usb_submit_urb returned -12
  [   62.502844] xhci_hcd 0000:05:00.0: ERROR no room on ep ring
  [   62.502847] usb 5-2.4: usbfs: usb_submit_urb returned -12
  [   62.505902] xhci_hcd 0000:05:00.0: ERROR no room on ep ring
  [   62.505911] usb 5-2.4: usbfs: usb_submit_urb returned -12
  [   62.508900] xhci_hcd 0000:05:00.0: ERROR no room on ep ring
  [   62.508908] usb 5-2.4: usbfs: usb_submit_urb returned -12

  Dmesg from me plugging my G15 keyboard into another USB port (to show the device ids involved):
  [  313.191977] usb 2-1.5: new full speed USB device number 7 using ehci_hcd
  [  313.286537] hub 2-1.5:1.0: USB hub found
  [  313.286852] hub 2-1.5:1.0: 4 ports detected
  [  313.555590] usb 2-1.5.1: new low speed USB device number 8 using ehci_hcd
  [  313.656960] input: Logitech Logitech Gaming Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.1/2-1.5.1:1.0/input/input15
  [  313.657081] generic-usb 0003:046D:C221.0006: input,hidraw2: USB HID v1.10 Keyboard [Logitech Logitech Gaming Keyboard] on usb-0000:00:1d.0-1.5.1/input0
  [  313.662412] input: Logitech Logitech Gaming Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.1/2-1.5.1:1.1/input/input16
  [  313.662561] generic-usb 0003:046D:C221.0007: input,hiddev0,hidraw3: USB HID v1.10 Device [Logitech Logitech Gaming Keyboard] on usb-0000:00:1d.0-1.5.1/input1
  [  313.731375] usb 2-1.5.4: new full speed USB device number 9 using ehci_hcd
  [  313.829219] input: G15 Keyboard G15 Keyboard as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5/2-1.5.4/2-1.5.4:1.0/input/input17
  [  313.829594] generic-usb 0003:046D:C222.0008: input,hiddev0,hidraw4: USB HID v1.11 Keypad [G15 Keyboard G15 Keyboard] on usb-0000:00:1d.0-1.5.4/input0

  WORKAROUND: Plug into native USB 2.0 port (from the Intel controller).

  I am now using 3.4.0-030400-generic from the Ubuntu Kernel Team and
  the error message no longer shows up!

  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  cyberwizzard   1796 F.... pulseaudio
   /dev/snd/controlC0:  cyberwizzard   1796 F.... pulseaudio
   /dev/snd/pcmC0D0p:   cyberwizzard   1796 F...m pulseaudio
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xfb420000 irq 63'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,10438469,00100302'
     Controls      : 35
     Simple ctrls  : 20
  Card1.Amixer.info:
   Card hw:1 'U0x46d0x8d7'/'USB Device 0x46d:0x8d7 at usb-0000:00:1d.0-1.2, full speed'
     Mixer name	: 'USB Mixer'
     Components	: 'USB046d:08d7'
     Controls      : 3
     Simple ctrls  : 2
  DistroRelease: Ubuntu 11.10
  HibernationDevice: RESUME=UUID=f894ce2a-5781-49bc-a11e-9f268085f583
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: System manufacturer System Product Name
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=20e1561c-ee2f-447b-a128-769fa5777bca ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
  RelatedPackageVersions:
   linux-restricted-modules-3.0.0-12-generic N/A
   linux-backports-modules-3.0.0-12-generic  N/A
   linux-firmware                            1.60
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
  StagingDrivers: mei
  Tags:  oneiric running-unity staging
  Uname: Linux 3.0.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm admin cdrom dialout fuse lpadmin plugdev sambashare
  dmi.bios.date: 03/02/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1502
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8P67 PRO
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1502:bd03/02/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8P67PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  ---
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  cyberwizzard   2030 F.... pulseaudio
   /dev/snd/pcmC0D0p:   cyberwizzard   2030 F...m pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  Card0.Amixer.info:
   Card hw:0 'PCH'/'HDA Intel PCH at 0xfb420000 irq 64'
     Mixer name	: 'Realtek ALC892'
     Components	: 'HDA:10ec0892,10438469,00100302'
     Controls      : 40
     Simple ctrls  : 19
  DistroRelease: Ubuntu 12.04
  HibernationDevice: RESUME=UUID=f894ce2a-5781-49bc-a11e-9f268085f583
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: System manufacturer System Product Name
  NonfreeKernelModules: nvidia
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 VESA VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-24-generic root=UUID=20e1561c-ee2f-447b-a128-769fa5777bca ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.2.0-24.39-generic 3.2.16
  PulseList:
   Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/cyberwizzard not ours.
   No PulseAudio daemon running, or not running as session daemon.
  RelatedPackageVersions:
   linux-restricted-modules-3.2.0-24-generic N/A
   linux-backports-modules-3.2.0-24-generic  N/A
   linux-firmware                            1.79
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  StagingDrivers: mei
  Tags:  precise staging precise staging
  Uname: Linux 3.2.0-24-generic x86_64
  UpgradeStatus: Upgraded to precise on 2012-04-13 (43 days ago)
  UserGroups:

  dmi.bios.date: 03/02/2011
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 1502
  dmi.board.asset.tag: To be filled by O.E.M.
  dmi.board.name: P8P67 PRO
  dmi.board.vendor: ASUSTeK Computer INC.
  dmi.board.version: Rev 1.xx
  dmi.chassis.asset.tag: Asset-1234567890
  dmi.chassis.type: 3
  dmi.chassis.vendor: Chassis Manufacture
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1502:bd03/02/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8P67PRO:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion:
  dmi.product.name: System Product Name
  dmi.product.version: System Version
  dmi.sys.vendor: System manufacturer
  ---
  ApportVersion: 2.0.1-0ubuntu7
  Architecture: amd64
  DistroRelease: Ubuntu 12.04
  InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
  Package: linux (not installed)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: linux-meta
  Tags:  precise precise
  Uname: Linux 3.4.0-030400-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: Upgraded to precise on 2012-04-13 (43 days ago)
  UserGroups:

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