help me! why it shows Gallium 0.4 on llvmpipe (LLVM 3.9, 25

[ninscious]

when i installed nvidia bumblebee drivers for my debian stretch.
it shows Gallium 0.4 on llvmpipe (LLVM 3.9, 256 bits)
what can i do for this?

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nins@debian:~$ lspci | grep '3D'
04:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 940M] (rev a2)

[ninscious]

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root@debian:/home/nins# inxi -G
Graphics:  Card-1: Intel HD Graphics 5500
           Card-2: NVIDIA GM108M [GeForce 940M]
           Display Server: X.org 1.19.2 drivers: modesetting (unloaded: fbdev,vesa)
           tty size: 80x24 Advanced Data: N/A for root

This is my inix -G shows.

[stevepusser]

First, you ran inxi as root for no reason, so you can't see the full output.

As far as I know, the Broadwell iGPU you have does not require firmware-misc-nonfree. What kernel are you running? (uname -r) Did you see this problem before installing the Nvidia drivers? Inxi also says you're using the kernel's modesetting driver instead of the "intel" one provided by xserver-xorg-video-intel, if that makes any difference. But I have heard the intel driver is unstable on Broadwell chipsets.