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[Bug 1220426] Re: [nvidia-prime]Freeze while using touchpad

 

Confirming Bug using nvidia-prime on Kubuntu 14.10 & Ubuntu 14.10 using
driver Nvidia-331.89, GT540M (Optimus) and ELAN trackpad on Acer 5755G.
The freezing occurs when running on battery power in about every 2 to 5
minutes of usage in my case, Switching to and from VT only solution. On
AC power the freezing generally occurs only once or twice in 24 hours.

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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-graphics-drivers-343” 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.

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