I've kept trying, and with the most recent updates (versions below) logging in is possible (but only with the external monitor connected via HDMI, which is wired to the nvidia card), however KDE seems to forget my prevorious display setup (i think this is why i can log in), but as soon as I try to realign the displays, the could not start ksmserver msg pops up.
baloo@LeW-O-Laptop:~$ dpkg -l | grep nvidia ii nvidia-331 331.38-0ubuntu5 amd64 NVIDIA binary driver - version 331.38 ii nvidia-libopencl1-331 331.38-0ubuntu5 amd64 NVIDIA OpenCL Driver and ICD Loader library ii nvidia-opencl-icd-331 331.38-0ubuntu5 amd64 NVIDIA OpenCL ICD ii nvidia-prime 0.6.1 amd64 Tools to enable NVIDIA's Prime ii nvidia-settings 331.20-0ubuntu8 amd64 Tool for configuring the NVIDIA graphics driver I also got a backtrace after a crash, I've attached it. ** Attachment added: "ksmserver-20140317-163302.kcrash.txt" https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1291526/+attachment/4028569/+files/ksmserver-20140317-163302.kcrash.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1291526 Title: could not start ksmserver with nvidia-prime at next login To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1291526/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs