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["Chas. Owens" <1206900@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-fixed-upstream

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

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https://bugs.launchpad.net/bugs/1206900

Title:
  046d:c52f [HP Elite 7100 Microtower PC] Kernel crash with Logitech
  K760 Bluetooth keyboard

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  I have a Logitech K760 Bluetooth keyboard.  This keyboard has three
  buttons that allow you to connect to three different machines via
  Bluetooth.  I have button three mapped to my Ubuntu box.  When I hit
  button one and then quickly hit button three, the kernel crashes.  If
  I wait a long period of time, it does not crash.  The logs (see end
  for full trace) seem to indicate that there is a problem with the
  kernel trying to create file that already exists:

      sysfs: cannot create duplicate filename
  '/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.7/2-1.7:1.0/bluetooth/hci0/hci0:21'

  I assume this is happening because the kernel has yet to clean up
  after the disconnection before the device tries to reconnect.  My
  current workaround is to wait a while before hitting button 3 when I
  accidentally hit button 1.  It would be nice if I reduce the timeout
  before the kernel cleans up the after the device to shorten the period
  of time I have to wait.

  Here I have hit button 1 and waited a few seconds:

      Jul 31 07:25:01 LD-cowens kernel: [  199.114124] power_supply hid-00:1f:20:3d:cf:09-battery: driver failed to report `capacity' property: -5
      Jul 31 07:25:06 LD-cowens kernel: [  204.105779] power_supply hid-00:1f:20:3d:cf:09-battery: driver failed to report `capacity' property: -5

  Then I hit button 3:

      Jul 31 07:25:31 LD-cowens kernel: [  229.279867] hid-generic 0005:046D:B316.0006: unknown main item tag 0x0
      Jul 31 07:25:31 LD-cowens kernel: [  229.293875] input: Logitech K760 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.7/2-1.7:1.0/bluetooth/hci0/hci0:21/input16
      Jul 31 07:25:31 LD-cowens kernel: [  229.294115] hid-generic 0005:046D:B316.0006: input,hidraw4: BLUETOOTH HID v1.1b Keyboard [Logitech K760] on 00:02:72:dd:e9:e1

  Hit button 1 and wait a few seconds:

      Jul 31 07:25:47 LD-cowens kernel: [  244.558409] power_supply hid-00:1f:20:3d:cf:09-battery: driver failed to report `capacity' property: -5
      Jul 31 07:25:52 LD-cowens kernel: [  249.550056] power_supply hid-00:1f:20:3d:cf:09-battery: driver failed to report `capacity' property: -5

  Hit button 3:

      Jul 31 07:26:15 LD-cowens kernel: [  272.731818] hid-generic 0005:046D:B316.0007: unknown main item tag 0x0
      Jul 31 07:26:15 LD-cowens kernel: [  272.770990] input: Logitech K760 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.7/2-1.7:1.0/bluetooth/hci0/hci0:21/input17
      Jul 31 07:26:15 LD-cowens kernel: [  272.771187] hid-generic 0005:046D:B316.0007: input,hidraw4: BLUETOOTH HID v1.1b Keyboard [Logitech K760] on 00:02:72:dd:e9:e1

  Hit button 1 and then button 3 without waiting long:
  https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1206900/+attachment/3759322/+files/crashlog

  ---
  ApportVersion: 2.9.2-0ubuntu8.1
  Architecture: i386
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  cowens     1923 F.... pulseaudio
   /dev/snd/controlC0:  cowens     1923 F.... pulseaudio
  CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
  DistroRelease: Ubuntu 13.04
  HibernationDevice: RESUME=UUID=f8b6484e-0229-4260-b9a1-5016d0a11cc5
  InstallationDate: Installed on 2013-07-12 (18 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
  IwConfig:
   lo        no wireless extensions.

   eth0      no wireless extensions.
  MachineType: Hewlett-Packard HP Elite 7100 Microtower PC
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-27-generic root=UUID=c90bacae-dd12-4683-9daf-94380f539408 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
  RelatedPackageVersions:
   linux-restricted-modules-3.8.0-27-generic N/A
   linux-backports-modules-3.8.0-27-generic  N/A
   linux-firmware                            1.106
  RfKill:
   0: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no
  Tags:  raring
  Uname: Linux 3.8.0-27-generic i686
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 03/03/2010
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: 5.13
  dmi.board.name: 2A9Ch
  dmi.board.vendor: MSI
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: MXL0150LB0
  dmi.chassis.type: 3
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr5.13:bd03/03/2010:svnHewlett-Packard:pnHPElite7100MicrotowerPC:pvrxxx0204GRxxxxxxxx0:rvnMSI:rn2A9Ch:rvr1.0:cvnHewlett-Packard:ct3:cvr:
  dmi.product.name: HP Elite 7100 Microtower PC
  dmi.product.version: xxx0204GRxxxxxxxx0
  dmi.sys.vendor: Hewlett-Packard

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