I have a Sager 8268-s / Clevo 150 running Ubuntu 14.10, nvidia 343 for GTX 870M.
The screen freeze is guaranteed to happen. It seems to be triggered when I am using the nvidia GPU and the touchpad. Using the Intel Graphics via prime-select prevents the screen freeze. I don't know if touchpad details would help with fixing this nvidia bug. The touchpad is I: Bus=0011 Vendor=0002 Product=0007 Version=01b1 N: Name="SynPS/2 Synaptics TouchPad" P: Phys=isa0060/serio2/input0 S: Sysfs=/devices/platform/i8042/serio2/input/input10 U: Uniq= H: Handlers=mouse0 event14 B: PROP=9 B: EV=b B: KEY=6420 30000 0 0 0 0 B: ABS=260800011000003 01:00.0 VGA compatible controller: NVIDIA Corporation GK104M [GeForce GTX 870M] (rev a1) (prog-if 00 [VGA controller]) Subsystem: CLEVO/KAPOK Computer Device 5281 Flags: bus master, fast devsel, latency 0, IRQ 56 Memory at f6000000 (32-bit, non-prefetchable) [size=16M] Memory at e0000000 (64-bit, prefetchable) [size=256M] Memory at f0000000 (64-bit, prefetchable) [size=32M] I/O ports at e000 [size=128] [virtual] Expansion ROM at f7000000 [disabled] [size=512K] Capabilities: <access denied> Kernel driver in use: nvidia -- 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 : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp