First of all: I know next to nothing about dri3, but when I try running an application (the x86_64 release of a file sync application at https://github.com/FilenCloudDienste/fi ... p/releases), I get an error message
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[4291:0804/104713.546997:ERROR:gpu_memory_buffer_support_x11.cc(44)] dri3 extension not supported.
This is my card
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$ lspci | grep -i --color 'vga\|3d\|2d'
05:00.0 VGA compatible controller: NVIDIA Corporation GP104 [GeForce GTX 1070] (rev a1)
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$ xdpyinfo | grep -i "DRI"
DRI2
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$ sudo apt list --installed | grep dri3
WARNING: apt does not have a stable CLI interface. Use with caution in scripts.
libxcb-dri3-0/stable,now 1.14-3 amd64 [installed,automatic]
libxcb-dri3-dev/stable,now 1.14-3 amd64 [installed]