In an attempt to replace a NVIDIA GPU with a GeForce GTX 1650 using driver 450.57, this happens:
[ 6.861113] nvidia: loading out-of-tree module taints kernel.
[ 6.861125] nvidia: module license 'NVIDIA' taints kernel.
[ 6.913259] nvidia: module verification failed: signature and/or required key missing - tainting kernel
[ 6.944834] nvidia-nvlink: Nvlink Core is being initialized, major device number 242
[ 6.967827] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=io+mem
[ 7.012712] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 450.57 Sun Jul 5 14:42:25 UTC 2020
[ 7.263737] nvidia-uvm: Loaded the UVM driver, major device number 240.
[ 7.506427] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 450.57 Sun Jul 5 14:52:29 UTC 2020
[ 7.522984] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[ 7.714194] caller _nv000743rm+0x1af/0x200 [nvidia] mapping multiple BARs
[ 18.727114] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 0
[ 23.883503] nvidia-modeset: WARNING: GPU:0: Lost display notification (0:0x00000000); continuing.
[ 1750.099] (II) NVIDIA(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 1750.099] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32
[ 1750.099] (==) NVIDIA(0): RGB weight 888
[ 1750.099] (==) NVIDIA(0): Default visual is TrueColor
[ 1750.099] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
[ 1750.100] (**) NVIDIA(0): Enabling 2D acceleration
[ 1750.100] (II) Loading sub module "glxserver_nvidia"
[ 1750.100] (II) LoadModule: "glxserver_nvidia"
[ 1750.100] (II) Loading /usr/lib64/xorg/modules/extensions/libglxserver_nvidia.so
[ 1750.202] (II) Module glxserver_nvidia: vendor="NVIDIA Corporation"
[ 1750.202] compiled for 1.6.99.901, module version = 1.0.0
[ 1750.202] Module class: X.Org Server Extension
[ 1750.204] (II) NVIDIA GLX Module 450.57 Sun Jul 5 14:43:44 UTC 2020
[ 1750.206] (II) NVIDIA: The X server supports PRIME Render Offload.
[ 1750.207] (--) NVIDIA(0): Valid display device(s) on GPU-0 at PCI:1:0:0
[ 1750.207] (--) NVIDIA(0): DFP-0
[ 1750.207] (--) NVIDIA(0): DFP-1
[ 1750.207] (--) NVIDIA(0): DFP-2
[ 1750.207] (--) NVIDIA(0): DFP-3 (boot)
[ 1750.208] (II) NVIDIA(0): NVIDIA GPU GeForce GTX 1650 (TU117-A) at PCI:1:0:0 (GPU-0)
[ 1750.208] (--) NVIDIA(0): Memory: 4194304 kBytes
[ 1750.208] (--) NVIDIA(0): VideoBIOS: 90.17.3d.00.71
[ 1750.208] (II) NVIDIA(0): Detected PCI Express Link width: 16X
[ 1758.206] (--) NVIDIA(GPU-0): DFP-0: disconnected
[ 1758.206] (--) NVIDIA(GPU-0): DFP-0: Internal TMDS
[ 1758.206] (--) NVIDIA(GPU-0): DFP-0: 330.0 MHz maximum pixel clock
[ 1758.206] (--) NVIDIA(GPU-0):
[ 1766.206] (--) NVIDIA(GPU-0): DFP-1: disconnected
[ 1766.206] (--) NVIDIA(GPU-0): DFP-1: Internal TMDS
[ 1766.206] (--) NVIDIA(GPU-0): DFP-1: 165.0 MHz maximum pixel clock
[ 1766.206] (--) NVIDIA(GPU-0):
[ 1766.206] (--) NVIDIA(GPU-0): DFP-2: disconnected
[ 1766.206] (--) NVIDIA(GPU-0): DFP-2: Internal DisplayPort
[ 1766.206] (--) NVIDIA(GPU-0): DFP-2: 2660.0 MHz maximum pixel clock
[ 1766.206] (--) NVIDIA(GPU-0):
[ 1794.318] (--) NVIDIA(GPU-0): Samsung S24E650 (DFP-3): connected
[ 1794.318] (--) NVIDIA(GPU-0): Samsung S24E650 (DFP-3): Internal TMDS
[ 1794.318] (--) NVIDIA(GPU-0): Samsung S24E650 (DFP-3): 165.0 MHz maximum pixel clock
[ 1794.318] (--) NVIDIA(GPU-0):
[ 1894.318] (==) NVIDIA(0):
[ 1894.318] (==) NVIDIA(0): No modes were requested; the default mode "nvidia-auto-select"
[ 1894.318] (==) NVIDIA(0): will be used as the requested mode.
[ 1894.318] (==) NVIDIA(0):
[ 1902.318] (II) NVIDIA(0): Validated MetaModes:
[ 1902.318] (II) NVIDIA(0): "DFP-3:nvidia-auto-select"
[ 1902.318] (II) NVIDIA(0): Virtual screen size determined to be 1920 x 1200
[ 2158.318] (--) NVIDIA(0): DPI set to (93, 95); computed from "UseEdidDpi" X config
[ 2158.318] (--) NVIDIA(0): option
[ 2158.318] (II) UnloadModule: "nouveau"
[ 2158.318] (II) Unloading nouveau
[ 2158.318] (II) UnloadModule: "modesetting"
[ 2158.318] (II) Unloading modesetting
[ 2158.318] (II) UnloadModule: "fbdev"
[ 2158.318] (II) Unloading fbdev
[ 2158.318] (II) UnloadSubModule: "fbdevhw"
[ 2158.318] (II) Unloading fbdevhw
[ 2158.319] (II) UnloadModule: "vesa"
[ 2158.319] (II) Unloading vesa
[ 2158.319] (II) NVIDIA: Using 24576.00 MB of virtual memory for indirect memory
[ 2158.319] (II) NVIDIA: access.
[ 2158.322] (II) NVIDIA(0): ACPI: failed to connect to the ACPI event daemon; the daemon
[ 2158.322] (II) NVIDIA(0): may not be running or the "AcpidSocketPath" X
[ 2158.322] (II) NVIDIA(0): configuration option may not be set correctly. When the
[ 2158.322] (II) NVIDIA(0): ACPI event daemon is available, the NVIDIA X driver will
[ 2158.322] (II) NVIDIA(0): try to use it to receive ACPI event notifications. For
[ 2158.322] (II) NVIDIA(0): details, please see the "ConnectToAcpid" and
[ 2158.322] (II) NVIDIA(0): "AcpidSocketPath" X configuration options in Appendix B: X
[ 2158.322] (II) NVIDIA(0): Config Options in the README.
[ 2158.349] (II) NVIDIA(0): Setting mode "DFP-3:nvidia-auto-select"
[ 2194.346] (WW) NVIDIA(0): Failed to set the display configuration
[ 2302.350] (EE)
Fatal server error:
[ 2302.350] (EE) AddScreen/ScreenInit failed for driver 0
[ 2302.350] (EE)
[ 2302.350] (EE)
System: openSUSE Tumbleweed 20200810, Kernel 5.8.0
A different monitor cable behaves similar.
Any advice appreciated.