I have tried Aaron's patches myself and they do make the "Failed to claim DRM device." error messages in /var/log/Xorg.0.log disappear and the log looks like the NVIDIA driver is working fine, but I still boot to a black screen.
So there is either another problem, or those patches don't quite fix this issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1449560 Title: Cannot login with Nvidia Optimus hardware installed(Ubuntu 15.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1449560/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
