(Note: I intentionally don't fix repeated characters
cccaaaaauuuusssssseeeeeedddd by that issue in my message below)

I'm affected by   ttthhheeeeee     sssssssame issue.

Initially I have installed Ubuntu 16.04.4 LTS. While installing it, I
had to add ttttthe boot parameter "acpi=off" in grub settings (both for
the installer andd    for booting of the installed OS). Otherwise, I got
a freeze on boot.

AAAAaafter installation, I got this probleeemmmm. But next to issues
with repeated keys, I got temporary freezes in firefox. I see that
sometimes the caret is applicaatioooooonsssss     flickers too fast (and
that is when I get repeated characters). And other strange issues.

I opened a clock application in https://www.online-stopwatch.com/online-
clock/ and I saw that the speed offf  the "seconds" needle is not
regular, and it sometimes moves backwardssss  bbbyyyy      10 to 15
seconds. There is really something wrong with system time.

Then I have upgraded to Ubuntu 17.10, but it was the same (but I got
additional issues because of the upgrade :( ).

And the solution was the one from comment #356 from this thread (
), which adds a "clocksource=jiffies" boot option.

I'm not done yet. Now I have a hang on Ubuntu shutdown (
restart ), and the suggested solution there is ... forcing acpi in boot
options :(

I have no idea whether this issue is related my acpi issues.

You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xorg-server in Ubuntu.

  Keyboard keys get stuck and repeat

Status in GNU Emacs:
Status in Linux:
Status in X.Org X server:
  In Progress
Status in linux package in Ubuntu:
  Won't Fix
Status in xorg-server package in Ubuntu:
  Won't Fix
Status in linux source package in Jaunty:
  Won't Fix
Status in xorg-server source package in Jaunty:
Status in Gentoo Linux:

Bug description:
  Keyboard keys such as the arrows, Alt-F4, PageUp/PageDown, etc. often
  get 'stuck' and continue being 'clicked' even after they are
  physically released. For example when clicking Alt-F4, sometimes it
  gets stuck so all the windows are closed instead of just one.

  My configuration is Feisty + Xgl + Compiz Fusion. My previous
  configuration was Edgy + Xgl + Beryl, where this didn't happen. Others
  have reported the same problem without using either Xgl or Compiz.

  The keyboard itself isn't the problem. When dual-booting to Windows,
  everything works fine. Also, the problem happens with two different
  keyboards (internal laptop, external USB).

  My best guess is that the problem occurs at time of high system load.
  Somehow during these times the key-release signal gets lost and the
  key-press is repeated indefinitely. This happens more often with
  Compiz configurations because Compiz tends to increase system load. It
  also happens more often with power-hungry apps like Firefox and
  Acrobat Reader for similar reasons.

  PS: When the keys would repeat all input devices would be locked up.
  ie. mouse won't move, clicks don't do anything, keyboard presses don't
  register. Then when it becomes unstuck, the mouse moves around and
  everything. Hope this helps.

  See also this forum thread for other people with the same problem:

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