Ok, THAT is interesting. Maybe it is just a coincidence that you mention Civilization V but this was also when I encountered the bug for the first time. Since than it has also occurred when NOT playing that game but it was the first time.
On my system (Acer Aspire 5750G) the problem is also not "sporadic" but occurs very often, mostly after a few minutes. If using the workaround to switch to a different VT and switch back the bug will be back within seconds or minutes. -- 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-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. 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 : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

