Same problem here. Laptop freezes randomly when using the Nvidia card as primary. Problem can be rectified by Ctrl+Alt+F1 and Ctrl+Alt+F7 combo. But it's so annoying since this process takes about a minute for the display o come back. I have switched to the Inbuilt Intel graphics due to this issue. Hopefully there will be fix out soon
laptop: Dell L502X Graphics Card : GT 525M OS : Ubuntu 14.04 LTS -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1220426 Title: [nvidia-prime]Freeze while using touchpad To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1220426/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs