Looks like bug #1260220 (Greeter and other clients cannot connect to X server) to me.
So if this gets in line again with the next update of LightDM (1.9.12-0ubuntu1), pls advise. -- 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/1291526 Title: could not start ksmserver with nvidia-prime at next login Status in “nvidia-prime” package in Ubuntu: New Bug description: Steps to reproduce: Install nvidia-prime, select nvidia card using prime-select nvidia, connect external monitor and try to change the resolution, log out and log back in, Could not start ksmserver message pops up. Works fine with ubuntu, must be a KDE related bug. The problem is not present when using the intel card. This bug has been present in 13.10, too. baloo@LeW-O-Laptop:~$ dpkg -l | grep nvidia ii nvidia-331 331.49-0ubuntu1~xedgers14.04.3 amd64 NVIDIA binary driver - version 331.49 ii nvidia-libopencl1-331 331.49-0ubuntu1~xedgers14.04.3 amd64 NVIDIA OpenCL Driver and ICD Loader library ii nvidia-opencl-icd-331 331.49-0ubuntu1~xedgers14.04.3 amd64 NVIDIA OpenCL ICD ii nvidia-prime 0.6 amd64 Tools to enable NVIDIA's Prime ii nvidia-settings 331.38-0ubuntu1~xedgers~trusty1 amd64 Tool for configuring the NVIDIA graphics driver I'm on a Dell N7110. lsb_release -rd Description: Ubuntu Trusty Tahr (development branch) Release: 14.04 ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: kdebase-workspace (not installed) ProcVersionSignature: Ubuntu 3.13.0-17.37-generic 3.13.6 Uname: Linux 3.13.0-17-generic x86_64 ApportVersion: 2.13.3-0ubuntu1 Architecture: amd64 CurrentDesktop: KDE Date: Wed Mar 12 18:57:25 2014 InstallationDate: Installed on 2014-03-11 (1 days ago) InstallationMedia: Kubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140311) SourcePackage: kde-workspace UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1291526/+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
