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[Launchpad Bug Tracker <1029203@xxxxxxxxxxxxxxxxxx>]

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When typing in several applications  (libreoffice, and firefox, at
least)  the keyboard is unreliable, to the point of being unusable.
Sometimes it starts missing characters and occasionally inserting extra
characters - input will stop (while I continue to type) and after a few
missing keystrokes operation will resume, oftenwith a few (to a dozen)
extra characters are inserted.  The extra characters will be the same
(for the occurrence), and one of the characters I typed ( I think it may
be the first "missing" character.)  For example, say I was typing
"partridge", and this problem occurs when I type the "t":  I might get
to the end of the word with "part" displaying, then "partrrrrr" might
appear.

I type at 80 words per minute.  If I type at  20 words per minute, this
does not occur.

This is not a hardware fault:  I replaced the hard drive before
installing ubuntu, so I reinstalled the windows 7 drive to see if the
problem was present.  All keyboard operations returned to normal with
the Windows disk.  I again swapped out the disks, then reinstalled
Ubuntu from scatch, reformatting the disk.  The fault continues to
occur.

I note that when this is occurring, I find the following in syslog:
ul 25 17:50:38 tuxtop kernel: [ 6686.308573] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.309058] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.316616] psmouse serio1: TouchPad at isa0060/serio1/input0 - driver resynced.
Jul 25 17:50:38 tuxtop kernel: [ 6686.351147] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 4
Jul 25 17:50:38 tuxtop kernel: [ 6686.352248] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.353865] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.355264] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.356260] psmouse serio1: TouchPad at isa0060/serio1/input0 lost sync at byte 1
Jul 25 17:50:38 tuxtop kernel: [ 6686.356276] psmouse serio1: issuing reconnect request
...
continuously.

Googling for similar, both the overt symptom (keystrokes
missed/repeated) and the above messages have been reported before (at
least as early as 2008), but no fixes identified.

Platform is hp dm1z-3000 laptop, with clickpad.  I have three other
ubuntus (all desktops) which do not exhibit this problem.

** Affects: linux (Ubuntu)
     Importance: Low
         Status: Incomplete


** Tags: bot-comment
-- 
Keyboard randomly loses and inserts keystrokes (often!)
https://bugs.launchpad.net/bugs/1029203
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