Same issue here on Ubuntu 13.10  Nvidia GT 750M using nvidia-331 and
nvidia-prime. The same issue doesn't happen when using #18 fix or using
an external mouse. I also have a touchscreen (eGalax Inc. eGalaxTouch
EXC7910-1023-12.00.00) - I wonder if that can cause the issue.

Regarding #18 fix, any idea if touchpad scrolling can be enabled (using
a Synaptics touchpad here)? I would rather have scrolling - sure the
freezes are annoying but Ctrl + Shift + F1 and Ctrl + Shift + F7 quickly
brings it back - better than having no touchpad scrolling.

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to nvidia-prime in Ubuntu.
https://bugs.launchpad.net/bugs/1220426

Title:
  [nvidia-prime]Freeze while using touchpad

Status in “nvidia-graphics-drivers-319” package in Ubuntu:
  Confirmed
Status in “nvidia-prime” package in Ubuntu:
  Opinion

Bug description:
  I'm using an Optimus laptop (Asus N43SL)
  nvidia-prime is installed, so my nvidia dedicated graphics card (GT 540m) is 
in use.

  Once in a while, my screen will freeze, only when I use my touchpad.
  This does not happen with my USB mouse.
  This does not happen either when I uninstall nvidia-prime and use my intel 
integrated graphics (HD3000).

  I can temporarily solve the issue by doing a VT switch.

  
  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.

To manage notifications about this bug go to:
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