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[laurence dawney <1220426@xxxxxxxxxxxxxxxxxx>]

Patch applied, tested and working perfectly :)
Been testing for over two hours now and hasn't missed a beat! no freezing, no issues of any kind with touchpad. 
Thank you Nikhil Mahale for the patch and Patrick Mertens for the guide :)

Dell Inspiron 15 7537
intel 4400/nvidia GT750m
synaptics touchpad
Linux Mint 17 x64 KDE, kernel 3.17.4

Tested with nvidia-331 drivers, will try also 340 and 346 (xedgers) tomorrow
Thanks again guys! :)

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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 X.Org X server:
  Confirmed
Status in “nvidia-graphics-drivers-319” package in Ubuntu:
  Invalid
Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  Invalid
Status in “nvidia-graphics-drivers-343” package in Ubuntu:
  Invalid
Status in “nvidia-prime” package in Ubuntu:
  Invalid

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.

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