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Tags: drivers   graphics   amd-graphics   gpu-driver  
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Title: Switch between Intel/AMD GPU on 18.04
ID: /2018/08/26/Switch-between-Intel_AMD-GPU-on-18.04
Created: August 26, 2018
Upload: November 24, 2022    Layout:  post
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You can find many answers to your question here in Ask Ubuntu:

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Additionally you will find many helpful links from other sources:

All the links are too long to summarize in this answer.

Rather than using lspci -nn | grep VGA which will only show your Intel GPU and not your AMD GPU you should try an expanded search using something like this:

$ lspci -k | grep -EA3 'VGA|Display|3D'
00:02.0 VGA compatible controller: Intel Corporation Skylake Integrated Graphics (rev 06)
	DeviceName:  Onboard IGD
	Subsystem: Dell Skylake Integrated Graphics
	Kernel driver in use: i915
01:00.0 3D controller: NVIDIA Corporation GM204M [GeForce GTX 970M] (rev a1)
	Subsystem: Dell GM204M [GeForce GTX 970M]
	Kernel driver in use: nvidia
	Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384
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