Ok so instead of typing up the issue, I'm having the exact same problem as this guy (the shutting the laptop lid and reopening also works for me).
Quoted from: http://askubuntu.com/questions/464534/ubuntu-14-04-lts-randomly-freezes-graphics-unity-only
When I'm just chilling on the desktop or doing whatever, Ubuntu 14.04
LTS will (every 10-20 minutes or so) just randomly freeze. The screen
just stops, I can't see my mouse move, etc. However, I can Alt+Ctrl+F1
into a tty terminal (though it's not much use).However, I noticed that if I close my laptop's lid, re-open it, then
enter my password to unlock the lock screen, everything is fine.What is going on here? How can I fix / stop / prevent this?
Note: My laptop has an nvidia-optimus setup, but Ubuntu 14.04 LTS
automatically recognized it and had the nvidia drivers applied.
However the solution posted is basically a work around more than a solution (use a usb mouse instead of touchpad). I recently managed to get my nvidia gtx 860m to actually work within ubuntu (after about 2 days of frustration) and trying to install other drivers doesn't seem to work at all. I currenlly have the following packages installed:
- nvidia-331
- nvidia-settings
- nvidia-prime
The GPU is being used for graphics processing as shown in this screen shot.
Has anybody had this issue and have a permanent solution ? Or can help me solve it, its driving me mad the system logs show nothing useful. I'm going to continue to research this problem if I find a solution I'll be sure to update.