I have the same problem on ubuntu 14.04 with elan touchpad. I use a optimus laptop with nvidia 640m gpu and intel gpu. Using the touchpad causes ubuntu to freeze, and it is possible to unfreeze going to and from a virtual console. I am using nvidia 331 and prime.
-- 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-graphics-drivers-331” 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: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-319/+bug/1220426/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
