This is bug is still persist in Kubuntu 16.4 LTS. Every time, when my laptop (HP Pavilion 15 Notebook PC) wake up from sleep the point freezes. To get it work again I do:
xinput set-prop 12 "Device Enabled" 1 where 12 in my touch-pad device number. and sometime ctrl+alt+f2 then ctrl+alt+f7 to get the pad accepting the clicking. This is laptop has dual graphics cards (Nvidia GM108M [GeForce 840M] and intel) with default to Nvidia driver nvidia-361 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+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
