https://bugs.kde.org/show_bug.cgi?id=386035

            Bug ID: 386035
           Summary: SDDM Loginscreen is black
           Product: plasmashell
           Version: 5.11.1
          Platform: Archlinux Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: k...@davidedmundson.co.uk
          Reporter: 1...@maksimo.de
                CC: plasma-b...@kde.org
  Target Milestone: 1.0

Hello

Notebook with Optimus (Intel and Nvidia)
1. Operation with Intel, login screen is visible.
2. Operation with Nvidia, login screen is black.
It is however possible to log on blindly if the cursor is in the password
field.
Error occurs with sddm.
Drivers are
Intel = xf86-video-intel 1: 2.99.917 + 796 + g04b4f3b7-1
Nvidia = nvidia 387.12-2
OS = ArchLinux

Config under Nvidia
Section "OutputClass"
    Identifier "intel"
    MatchDriver "i915"
    Driver "modesetting"
EndSection

Section "OutputClass"
    Identifier "nvidia"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    "AllowEmptyInitialConfiguration"
    Option "PrimaryGPU" "yes"
    ModulePath "/ usr / lib / nvidia / xorg"
EndSection

Xsetup contains:
xrandr --setprovideroutputsource modesetting NVIDIA-0

xrandr --listproviders returns:
Providers: number: 2
Provider 0: id: 0x2d6 cap: 0x1, Source Output crtcs: 0 outputs: 0
associatedProviders: 1 name: NVIDIA-0
Provider 1: id: 0x46 cap: 0xf, Source Output, Sink Output, Source Offload, Sink
Offload crtcs: 3 outputs: 4 associated providers: 1 name: modesetting

Is it a bug in sddm?

greeting
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