Mine is a bit different. Also for a Lenovo, you can try it under the same name. Just edit the file with this:
Section "Device"
Identifier "AMD"
Driver "amdgpu"
Option "DRI" "3"
Option "TearFree" "true"
EndSection
How can i read more about Xorg configuration?
I do not know about TearFree and DRI.
Pouria
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