I have same error sometimes and I have to reboot. $ sudo prime-select nvidia Error: alternatives are not set up properly Error: nvidia mode can't be enabled
Linux 3.13.0-24-generic nvidia-prime 0.6.2 nvidia-331 331.38-0ubuntu7 Ubuntu 14.04 lightdm (1.10.0-0ubuntu3) trusty $ lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF117M [GeForce 610M/710M/820M / GT 620M/625M/630M/720M] (rev ff) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1310023 Title: 14.04: Nvidia Prime is unable to switch to the Nvidia card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1310023/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
