[SOLVED] Black screen when try to use Optimus

[UlvHare]

Hello all!
I'm trying to use my 3d accelerator with PRIME:

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01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 850M] (rev a2)
        Subsystem: ASUSTeK Computer Inc. GM107M [GeForce GTX 850M]
        Kernel driver in use: nvidia
        Kernel modules: nvidia_drm, nvidia

I've read https://wiki.gentoo.org/wiki/NVIDIA/Optimus and https://wiki.gentoo.org/wiki/NVIDIA/nvidia-drivers and https://wiki.gentoo.org/wiki/NVIDIA/Opt ... nf_Example and http://us.download.nvidia.com/XFree86/L ... ndr14.html, so I have such configuration:

/etc/xorg.conf.d/20-prime.conf
kernel config

/etc/sddm/scripts/Xsetup:

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#!/bin/sh
xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto

in /etc/default/grub:

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GRUB_CMDLINE_LINUX_DEFAULT="drm_kms_helper.edid_firmware=edid/monitor.bin"

But when I'm trying to start X(KDE) session I have a black screen and a such Xorg.0.log.

When using only intel configuration (replace /etc/xorg.conf.d/20-prime.conf by /etc/xorg.conf.d/20-intel.conf), everything OK except:

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xrandr --listproviders
Providers: number : 1
Provider 0: id: 0x47 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 5 associated providers: 0 name:Intel

What's wrong? Please, help!

[UlvHare]

Now solved! From here I've removed /etc/X11/xorg.conf.d/20-prime.conf and add /etc/X11/xorg.conf from official readme:

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    Section "ServerLayout"
      Identifier "layout"
      Screen 0 "iGPU"
    EndSection

    Section "Device"
      Identifier "iGPU"
      Driver "modesetting"
    EndSection

    Section "Screen"
      Identifier "iGPU"
      Device "iGPU"
    EndSection

    Section "Device"
      Identifier "dGPU"
      Driver "nvidia"
    EndSection

And now it works. Full recipe is https://wiki.gentoo.org/wiki/NVIDIA/Optimus except auto-configure X and read-edid, which doesn't work in my laptop, so I used script from this message