bumblebeed：未找到集成显卡，正在退出

Question

我正在尝试让 Bumblebee 在 Ubuntu 14.10 x64 和 NVIDIA OPTIMUS 上工作：
- Intel HD3000 （不知道使用了哪些驱动程序：我在 14.04 和 14.04 上安装了 Intel(R) Graphics Installer for Linux* 1.0.7然后升级到 14.10)
- 带有 331.113 驱动程序的 NVIDIA GT555M

~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GF106M [GeForce GT 555M] (rev a1)

~$ optirun --status
[  793.908226] [ERROR]The Bumblebee daemon has not been started yet or the socket path /var/run/bumblebee.socket was incorrect.
[  793.908349] [ERROR]Could not connect to bumblebee daemon - is it running?

~$ bumblebeed
[  842.118430] [ERROR]No integrated video card found, quitting.

^ 我该如何解决？