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[Alexander Baldwin <mynameiszanders@xxxxxxxxx>]

Confirmed on HP ENVY 17 (J130EA) with 14.10 x64. VT switch workaround
does not work, nor any patches I've tried.

Also seems to be the case on my desktop (custom build, non-nVidia
graphics card, USB mouse and PS/2 keyboard).

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https://bugs.launchpad.net/bugs/1220426

Title:
  [nvidia-prime]Freeze while using touchpad

Status in X.Org X server:
  Fix Released
Status in xorg-server package in Ubuntu:
  Triaged

Bug description:
  Using Asus N43SL laptop as an example, with nvidia-prime installed, so
  the dedicated NVIDIA graphics card (GT 540m) is in use, once in a
  while, my screen will freeze when I use my touchpad.

  WORKAROUND: Use USB mouse.

  WORKAROUND: Uninstall nvidia-prime and use integrated graphics.

  WORKAROUND: Do a VT switch via Ctrl+Alt+F1 then Ctrl+Alt+F7.

  In the attached Xorg.0.log, you can see "synaptics: ETPS/2 Elantech Touchpad: touchpad found" each time I did a VT switch and regained control:
  https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1220426/+attachment/3801516/+files/Xorg.0.log

  The following upstream report has a patch that addresses this issue:
  https://bugs.freedesktop.org/show_bug.cgi?id=86288

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