Here is the output on my optimus laptop. I suffer from the same issue of no video output on Nvidia, but Intel's working fine. Have to go to VT and purge nvidia and restart. Then reinstall nvidia and switch to Intel using nvidia-settings.
Ubuntu Trusty. Dell XPS L502X, Intel HD Graphics, Nvidia 540M. ** Attachment added: "Output of apt-cache policy nvidia-331 && apt-cache policy nvidia-331-updates" https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1268771/+attachment/3964187/+files/output.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1268771 Title: NVIDIA Prime fails with Linux 3.13 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1268771/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
