I have the same problem, or, at least, a similar one. My system is: HP Pavilion dm1 / Ubuntu 14.04.3 LTS / Radeon HD 6320 graphics / PS/2 Synaptics TouchPad.
My touchpad stops working periodically. A display swap (CTRL+ALT+f1 etc.) *sometimes* solves the problem, but I'm also finding that sometimes my keyboard stops working at the same time - which of course means that I can't swap displays using the keyboard. The problem does seem to be solved by connecting a USB mouse and a USB keyboard - but as it's a laptop I can't always do that. I have tried the solution suggested at post #18. This worked very briefly, but before long the touchpad and (non-USB) keyboard stopped working again. I have briefly looked at the solution suggested at post #251. Pardon my ignorance as a relative novice, but do I need to compile the package at https://launchpad.net/~snafu109/+archive/ubuntu/xorg-server ? I've added the PPA address as instructed, but I'm guessing that's not all I need to do? If someone could help with this I'd be very grateful. -- 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
