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[SOLVED] Black screen when try to use Optimus

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UlvHare
n00b
n00b

Joined: 09 Sep 2015
Posts: 20
Location: USSR

Posted: Thu Mar 07, 2024 10:14 am Post subject: [SOLVED] Black screen when try to use Optimus

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

Code:

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/Optimus/EDID_Xorg.conf_Example and http://us.download.nvidia.com/XFree86/Linux-x86_64/535.154.05/README/randr14.html, so I have such configuration:

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

/etc/sddm/scripts/Xsetup:

Code:

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

in /etc/default/grub:

Code:

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:

Code:

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!

Last edited by UlvHare on Thu Mar 07, 2024 6:28 pm; edited 1 time in total

UlvHare
n00b
n00b

Joined: 09 Sep 2015
Posts: 20
Location: USSR

Posted: Thu Mar 07, 2024 6:26 pm Post subject:

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

Code:

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

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