Hi Shamila,

Thanks for the bug report. Could you please help to share your observation with 
331.89 or latest drivers?
Here the link for 340.24_x86_64 [long live branch] 
http://www.nvidia.com/content/DriverDownload-March2009/confirmation.php?url=/XFree86/Linux-x86_64/340.24/NVIDIA-Linux-x86_64-340.24.run&lang=us&type=geforcem
 

Also Shamila / Darren and all,

Please help to increase the X log level and try to reproduce the issue.
Here the link, which guide you: http://askubuntu.com/questions/55590
/how-to-startx-with-logverbose-6-arguments

Once issue reproduced, please do share the latest logs.

NVIDIA-Bug-reprort logs, what ever we got, It doesn't have enough
information to conclude whether it's NVIDIA driver issue or not.

Still in our end, we are trying to reproduce this issue locally.

-- 
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:
  Triaged
Status in “nvidia-graphics-drivers-331” package in Ubuntu:
  Triaged
Status in “nvidia-prime” package in Ubuntu:
  Triaged

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:
https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1220426/+subscriptions

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