我使用的是 Sager NP5160 笔记本电脑，它有 NVIDIA GT 540M dGPU 和集成显卡。我同时启动 Windows 7 和 Linux Mint。最近我注意到，当我在 Windows 7 中切换到平衡模式（从 UMA 模式）时，游戏的性能不如应有的那样好。查看设备详细信息后，似乎出现了代码 43。我在一些地方读到这是硬件问题，我需要将笔记本电脑送去维修，而在其他地方，这可能只是驱动程序问题。我尝试重新安装驱动程序，既从 NVIDIA 网站安装，也从原始 Sager 磁盘安装，但都没有解决问题。
然后我尝试optirun glxgears在 Mint 上运行，看看我的显卡是否能在 Linux 中工作。结果如下：
[ 1693.231169] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) NVIDIA(0): Failed to initialize the NVIDIA GPU at PCI:1:0:0. Please
[ 1693.231258] [ERROR]Aborting because fallback start is disabled.
运行 lspci 确实检测到了我的卡：
01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1)
检查内核日志，似乎 Bumblebee 成功找到并尝试启动卡，但随后初始化失败：
Dec 27 10:50:00 RmRfSlash kernel: [ 501.993242] bbswitch: enabling discrete graphics
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305585] pci 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305603] pci 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305657] pci 0000:01:00.0: restoring config space at offset 0x1 (was 0x100006, writing 0x100000)
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305685] pci 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305692] pci 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305701] pci 0000:01:00.0: enabling device (0000 -> 0003)
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305717] pci 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Dec 27 10:50:01 RmRfSlash kernel: [ 502.305727] pci 0000:01:00.0: setting latency timer to 64
Dec 27 10:50:01 RmRfSlash kernel: [ 502.543867] nvidia: module license 'NVIDIA' taints kernel.
Dec 27 10:50:01 RmRfSlash kernel: [ 502.543873] Disabling lock debugging due to kernel taint
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593722] nvidia 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593733] nvidia 0000:01:00.0: power state changed by ACPI to D0
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593744] nvidia 0000:01:00.0: enabling device (0000 -> 0003)
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593760] nvidia 0000:01:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593777] nvidia 0000:01:00.0: setting latency timer to 64
Dec 27 10:50:01 RmRfSlash kernel: [ 502.593788] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=none
Dec 27 10:50:01 RmRfSlash kernel: [ 502.594061] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 295.40 Thu Apr 5 21:37:00 PDT 2012
Dec 27 10:50:04 RmRfSlash kernel: [ 505.462708] NVRM: RmInitAdapter failed! (0x27:0xffffffff:1190)
Dec 27 10:50:04 RmRfSlash kernel: [ 505.462717] NVRM: rm_init_adapter(0) failed
这似乎是一个硬件问题，但在处理发送笔记本电脑的麻烦之前，我想看看是否有人有建议的解决办法。
谢谢！