等待牛人解决的问题

遇到的问题:不能使用独立显卡,从304到最新的361我都试过了,网上说用Bumblebee 控制双显卡切换我也试过了,实在是无解,以下是部分日志。

笔记本型号:acer E5-572G-58HZ
CPU: i5-4210M
双显卡:GeForce940M + intel集成显卡
系统:ubuntu14.04 LTS
内核版本: Linux datanode1 3.19.0-25-generic #26~14.04.1-Ubuntu SMP Fri Jul 24 21:16:20 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

[ 1.919849] nvidia: module license ‘NVIDIA’ taints kernel.
kernel: [ 1.919852] Disabling lock debugging due to kernel taint
kernel: [ 1.923950] nvidia: module verification failed: signature and/or required ke
kernel: [ 1.934502] nvidia 0000:01:00.0: enabling device (0006 -> 0007)

nvidia-persistenced: Started (1234)
nvidia-persistenced: Failed to query NVIDIA devices. Please ensure that the NVIDIA devic
nvidia-persistenced: Shutdown (1234)

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