Ubuntu 18.04 无法使用专用 Nvidia GPU/无法禁用集成 GPU/PRIME 似乎不起作用

Question

我的问题如标题所述。我已成功安装了 Nvidia 440 驱动程序，但游戏使用集成的 Intel 530 GPU。无论我做什么，设置中的详细信息部分也显示 Intel GPU。lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA命令也显示 Intel 530。真的不知道该怎么办。

00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
Subsystem: ASUSTeK Computer Inc. HD Graphics 530
Kernel driver in use: i915
Kernel modules: i915

01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 950M] (rev a2)
Subsystem: ASUSTeK Computer Inc. GM107M [GeForce GTX 950M]
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia

输出glxinfo | grep OpenGL：

OpenGL vendor string: Intel Open Source Technology Center
OpenGL vendor string: Intel Open Source Technology Center
OpenGL core profile version string: 4.5 (Core Profile) Mesa 19.2.1
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 19.2.1
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 19.2.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

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