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[Martin G Miller <mgmiller@xxxxxxxxxxxxx>]

This has apparently been ongoing for  a long time.  I have a Saitek
Eclipse ii keyboard and I and others report that when you click the
keyboard button to change the back light color, it triggers mouse
events.  These end up disabling the mouse.  Unplugging and replugging
the USB cable for the keyboard resets function to normal with the
default blue back light color.  If you try to change the color, the
problem returns.  I am now running 64 bit 14.04 and the problem has been
with me since at least 12.04.

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https://bugs.launchpad.net/bugs/636311

Title:
  Keyboard special keys interfere with mouse

Status in Release Notes for Ubuntu:
  Invalid
Status in “xorg” package in Ubuntu:
  Invalid
Status in “xserver-xorg-input-evdev” package in Ubuntu:
  Invalid
Status in “xorg” source package in Maverick:
  Fix Released
Status in “xserver-xorg-input-evdev” source package in Maverick:
  Invalid
Status in “xorg” source package in Natty:
  Invalid
Status in “xserver-xorg-input-evdev” source package in Natty:
  Invalid

Bug description:
  Binary package hint: xorg

  Following an online update from Kubuntu Lucid to Maverick beta, use of
  almost any of the 'special' buttons on the keyboard (mail, home,
  documents, play/pause, volume up, zoom in...) fires a ButtonPress
  event (as seen by xev) for the physically left mouse button (i.e. left
  click with the mouse set right-handed, 'right click' if set left-
  handed). There is no corresponding ButtonRelease, so the computer acts
  as if that mouse button is held down. The ButtonPress occurs between
  the KeyPress and KeyRelease events of the special key.

  This makes the mouse essentially unusable. So far, I've not found a
  way to reset it besides logging off (i.e. restarting X).

  Hardware:
  - Basic Microsoft keyboard and mouse (optical wheel mouse, Digital Media Keyboard 3000)
  - Intel graphics (lspci says it's an 82G33/31 integrated graphics controller)

  Initially I thought the problem was related to kwin compositing (which
  also causes some problems, see bug 630632 ), but I've found it
  happening even with desktop effects turned off.

  I don't know if xorg is the best package to file this against, so if
  not, please point me in the right direction.

  == Regression details ==
  Discovered in version: maverick
  Last known good version: lucid

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