are you using version 331.38-0ubuntu3? Please attach the output of the following commands:
apt-cache policy nvidia-331 apt-cache policy nvidia-331-updates -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to nvidia-graphics-drivers-331-updates in Ubuntu. https://bugs.launchpad.net/bugs/1268771 Title: NVIDIA Prime fails with Linux 3.13 Status in “nvidia-graphics-drivers-331” package in Ubuntu: Fix Released Status in “nvidia-graphics-drivers-331-updates” package in Ubuntu: Fix Released Bug description: When I select the Nvidia® graphics card from control panel using nvidia-prime, after logging out, the screen goes black and the only way to approach it is in text mode. I also used the nvidia-prime 4.2 in Ubuntu 13.10 but I have never encountered such problems. ---------------------------- Specifications --------------------------- Operative System : Ubuntu 14.04LTS 64bit (Daily Build) Package: nvidia-prime 0.5.3 Driver: nvidia-331-updates Graphics: Nvidia® GeForce® 610M Processor: Intel® Core™ i7-2670QM ----------------------------------------------------------------------- To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-331/+bug/1268771/+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