I recently tried to check if my AMT ATI HD7970M graphics was working by issuing some test command to it and it was working. However, today I tried the same but it seems I can't make my AMD GPU to be detected by preceding commands with DRI_PRIME=1.
I leave here some commands outputs, maybe they help you to help me.
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glxinfo | grep -i "OpenGL Renderer"
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
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DRI_PRIME=1 glxinfo | grep -i "OpenGL Renderer"
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
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xandr --listproviders
Providers: number : 1
Provider 0: id: 0x4a cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 8 associated providers: 0 name:modesetting
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lspci -k | grep -EA3 'VGA|Display'
If needed, I can past here also my .xsessionerrors which is quite big.00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
Subsystem: CLEVO/KAPOK Computer 3rd Gen Core processor Graphics Controller
Kernel driver in use: i915
Kernel modules: i915
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01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Wimbledon XT [Radeon HD 7970M]
Subsystem: CLEVO/KAPOK Computer Wimbledon XT [Radeon HD 7970M]
Kernel modules: radeon, amdgpu
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411 PCI Express Card Reader (rev 01)
Any ideas what the problem is and/or how to solve this?