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[McLoy Loi Ivan <1220426@xxxxxxxxxxxxxxxxxx>]

sorry for my english , I'm Italian ...
1 year is that living with this bug or something . Continuous freeze random every day . But I do not have the touchpad . it is possible to have the same bug without it ? reading your comments I have tried to remove " xorg - input- synaptics " . it seems that by four days I have not had any freeze ....
linux mint cinnamon 17.2
nvidia gtx 460 Driver 346.87
Ps : is released update nvidia 346.96 has anyone tried it ?

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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:
  Fix Released
Status in xorg-server source package in Trusty:
  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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