Barry Drake, thank you for performing the requested test. Given this is
correlated to the desktop environment one uses, this would appear not to
be a kernel issue, but something to do with userspace. I'll send to xorg
(Ubuntu) for them to have a look.

** Description changed:

  Every third or fourth boot, the keyboard is not found although it is
  accessible by grub2 and by pressing <CTRL>+<ALT>+F2 and withing the
  terminal.  Logout and login from the terminal followed by
  <CTRL>+<ALT>+F7 to reaccess X does not bring back the keyboard.  My
  current workaround is to use suspend and then reactivate.  This always
- finds the keyboard after which all is normal.
+ finds the keyboard after which all is normal. The problem began after an
+ update to something (I'm not sure what as the problem is spasmodic).  It
+ was first noticed some two or three weeks ago.
  
- The problem began after an update to something (I'm not sure what as the
- problem is spasmodic).  It was first noticed some two or three weeks
- ago.
- 
- I will be happy to carry out tests if someone wants to point me in the
- right direction.
+ WORKAROUND: Works in Lubuntu 14.04.
  
  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: xserver-xorg-input-all 1:7.7+1ubuntu7
  ProcVersionSignature: Ubuntu 3.12.0-7.15-generic 3.12.4
  Uname: Linux 3.12.0-7-generic i686
  .tmp.unity.support.test.0:
-  
+ 
  ApportVersion: 2.12.7-0ubuntu3
  Architecture: i386
  CompizPlugins: No value set for 
`/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  CurrentDmesg:
-  [   26.884218] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
-  [  550.563790] audit_printk_skb: 138 callbacks suppressed
-  [  550.563794] type=1400 audit(1388145574.597:67): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/lib/cups/backend/cups-pdf" pid=2772 comm="apparmor_parser"
-  [  550.563802] type=1400 audit(1388145574.597:68): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/sbin/cupsd" pid=2772 comm="apparmor_parser"
-  [  550.564387] type=1400 audit(1388145574.597:69): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/sbin/cupsd" pid=2772 comm="apparmor_parser"
+  [   26.884218] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
+  [  550.563790] audit_printk_skb: 138 callbacks suppressed
+  [  550.563794] type=1400 audit(1388145574.597:67): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/lib/cups/backend/cups-pdf" pid=2772 comm="apparmor_parser"
+  [  550.563802] type=1400 audit(1388145574.597:68): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/sbin/cupsd" pid=2772 comm="apparmor_parser"
+  [  550.564387] type=1400 audit(1388145574.597:69): apparmor="STATUS" 
operation="profile_replace" parent=2768 profile="unconfined" 
name="/usr/sbin/cupsd" pid=2772 comm="apparmor_parser"
  Date: Fri Dec 27 16:23:05 2013
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  ExtraDebuggingInterest: Yes
  GraphicsCard:
-  Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7560D] [1002:9904] 
(prog-if 00 [VGA controller])
-    Subsystem: ASRock Incorporation Device [1849:9901]
+  Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7560D] [1002:9904] 
(prog-if 00 [VGA controller])
+    Subsystem: ASRock Incorporation Device [1849:9901]
  InstallationDate: Installed on 2013-10-21 (67 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20131021)
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.12.0-7-generic 
root=UUID=b0a5ccea-5d55-4be4-838d-195afa498cc5 ro quiet splash vt.handoff=7
  SourcePackage: xorg
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 05/03/2013
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.50
  dmi.board.name: FM2A55M-VG3
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: 
dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd05/03/2013:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnFM2A55M-VG3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
  version.libdrm2: libdrm2 2.4.50-1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.0.1-1ubuntu2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.0.1-1ubuntu2
  version.xserver-xorg-core: xserver-xorg-core 2:1.14.5-1ubuntu2
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu1
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 
1:1.0.10-1ubuntu1
  xserver.bootTime: Fri Dec 27 11:50:49 2013
  xserver.configfile: default
  xserver.devices:
-  input        Power Button         KEYBOARD, id 6
-  input        Power Button         KEYBOARD, id 7
-  input        Logitech Optical USB Mouse MOUSE, id 8
-  input        AT Translated Set 2 keyboard KEYBOARD, id 9
+  input        Power Button         KEYBOARD, id 6
+  input        Power Button         KEYBOARD, id 7
+  input        Logitech Optical USB Mouse MOUSE, id 8
+  input        AT Translated Set 2 keyboard KEYBOARD, id 9
  xserver.errors:
-  
+ 
  xserver.logfile: /var/log/Xorg.0.log
  xserver.version: 2:1.14.5-1ubuntu2
  xserver.video_driver: radeon

** Changed in: linux (Ubuntu)
   Importance: Medium => Low

** Package changed: linux (Ubuntu) => xorg (Ubuntu)

** Changed in: xorg (Ubuntu)
       Status: Incomplete => New

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1264543

Title:
  Trusty boots spasmodically with inactive keyboard .....

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