Comment 26 for bug 1310489

BTW I'm going to second the "nogpumanager" approach, because I just rebooted and even with a completely commented-out gpu-manager.conf it still ran and decided the number of cards had changed and removed my xorg.conf leaving my system unusable. Putting "nogpumanager" into the kernel command line via /etc/default/grub did the trick. gpu-manager still runs, but now it explicitly logs that it was disabled by the kernel parameter.