I have an Asus Laptop with a hybrid GPU (Intel HD 520 & nvidia 940m). On a fresh install of Ubuntu 18.04 LTS, the iGPU performs as expected:
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glmark2 2014.03+git20150611.fa71af2d
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OpenGL Information
GL_VENDOR: Intel Open Source Technology Center
GL_RENDERER: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
GL_VERSION: 3.0 Mesa 18.0.5
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...
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glmark2 Score: 1380
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But the nvidia GPU performs poorly
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glmark2 2014.03+git20150611.fa71af2d
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OpenGL Information
GL_VENDOR: nouveau
GL_RENDERER: NV118
GL_VERSION: 3.0 Mesa 18.0.5
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...
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glmark2 Score: 292
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Even worse performance with the proprietary driver:
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glmark2 2014.03+git20150611.fa71af2d
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OpenGL Information
GL_VENDOR: NVIDIA Corporation
GL_RENDERER: GeForce 940M/PCIe/SSE2
GL_VERSION: 4.6.0 NVIDIA 390.116
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...
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glmark2 Score: 165
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The system runs fine if I use the iGPU but lags terribly with the nvidia gpu (firefox becomes a slideshow). Why is this happening?
glmark2 Score: 4301withNVIDIA 430.34onGTX 1080/PCIe/SSE2but I am usingi3window manager withcomptoncompositor. But indeed Your score seems low...435.21?