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["thomas a. sargent" <sarg314@xxxxxxxxx>]

kernel-bug-exists-upstream
I downloaded and tested the V4.2-rc4-unstable kernel. I verified it was the one running by displaying /proc/version.  The bug still persists.  The F5 key light goes off for about 1 sec. and the keyboard is disabled while the light is off.

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

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https://bugs.launchpad.net/bugs/1478250

Title:
  hp x360 laptop keyboard freezes for 1 sec. every few minutes

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  A couple weeks ago Installed ubuntu 14.04 on an hp spectre x360.  It
  works great except for a strange keyboard problem.  Every 2 or 3
  minutes the keyboard freezes for about 1 second - it misses keystrokes
  completely.   Anything typed during that 1 second period is missed.
  For that same period, the LED in the F5 key turns off.  The F5 key is
  normally illuminated. If you hit it, that turns the LED off and turns
  on the keyboard backlight.  Hit it again, and the backlight goes off
  and F5 lights up again.  Apparently while that light is out, the
  keyboard is disabled.

  I wrote a program that printed a variable character pattern to a
  terminal every 4 times/sec  and just watched it. I wanted to know if
  the whole computer (or just whole desktop?) was freezing, or just the
  keyboard.  When the keyboard light turned off, the program kept
  running, so I think it's just the keyboard.

  The timing of the light blinking off is variable.  If I am not typing, the light seems to blink at a 2min 30 sec.to 3min 30 sec period.  It seems more often than that when I am actually typing, perhaps 2 minutes.  I'm guessing this is a keyboard driver problem?  Anyone else seen this?  
  /proc/version is Linux version 3.16.0-43-generic (buildd@brownie) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #58~14.04.1-Ubuntu SMP Mon Jun 22 10:21:20 UTC 2015.
  --- 
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  sarg314    1860 F.... pulseaudio
   /dev/snd/controlC0:  sarg314    1860 F.... pulseaudio
  CurrentDesktop: Unity
  DistroRelease: Ubuntu 14.04
  HibernationDevice: RESUME=UUID=c0ce179f-fac4-4cc5-8ec4-59859141662e
  InstallationDate: Installed on 2015-07-03 (23 days ago)
  InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
  MachineType: Hewlett-Packard HP Spectre x360 Convertible 13
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-44-generic.efi.signed root=UUID=0d0480e0-4b2f-4413-bcaa-a4ebf1c1b2ec ro quiet splash "acpi_osi=!Windows 2013" "acpi_osi=!Windows 2012" acpi_backlight=vendor acpi_backlight=video video.use_native_backlight=1 vt.handoff=7
  ProcVersionSignature: Ubuntu 3.16.0-44.59~14.04.1-generic 3.16.7-ckt14
  RelatedPackageVersions:
   linux-restricted-modules-3.16.0-44-generic N/A
   linux-backports-modules-3.16.0-44-generic  N/A
   linux-firmware                             1.127.14
  Tags:  trusty
  Uname: Linux 3.16.0-44-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 01/19/2015
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: F.04
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 802D
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 58.16
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrF.04:bd01/19/2015:svnHewlett-Packard:pnHPSpectrex360Convertible13:pvr:rvnHewlett-Packard:rn802D:rvr58.16:cvnHewlett-Packard:ct10:cvrChassisVersion:
  dmi.product.name: HP Spectre x360 Convertible 13
  dmi.sys.vendor: Hewlett-Packard

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