[GK107 10de:0fc1 Kepler] [drm:drm_client_modeset_probe] No connectors reported connected - black screen; no keyboard response

Downstream SUSE bug 1225296 All x86_64 kernels through 6.6.50 behave as expected. Tumbleweed and Slowroll kernels 6.7.9, 6.8.9, 6.9.9, 6.10.10 & 6.11.00, and same or similar kernel versions from Debian Testing, Fedora 39/40 and Ubuntu 24.04, produce an unusable computer, unless its use is limited to remote logins and/or remotely controlled server. The downstream bug provides a 25 day/2 kernel 2024 Feb 22 to Mar 18 range where breakage appeared through backporting into the openSUSE Leap "6.4" kernel. Behavior was totally as expected, exclusive of issue #214, before replacing GF119 10de:107d Fermi with GK107 10de:0fc1 Kepler.

# inxi -Gxxz
Graphics:
  Device-1: NVIDIA GK107 [GeForce GT 640] vendor: ZOTAC driver: nouveau
    v: kernel pcie: speed: 2.5 GT/s lanes: 16 ports: active: none
    empty: DVI-D-1,DVI-I-1,HDMI-A-1 bus-ID: 01:00.0 chip-ID: 10de:0fc1
    temp: 42.0 C
  Display: unspecified server: X.org v: 1.21.1.12 driver: X:
    loaded: modesetting unloaded: fbdev,vesa alternate: nouveau,nv,nvidia
    dri: nouveau gpu: nouveau
…

Expected behavior:

1.console keyboard working 
2.console video working on all connected outputs 
3.X working

Actual behavior (example using SUSE's Kernel:/HEAD/standard's 6.11.00 x86_64):

1.none of the above listed expected behavior
2.# dmesg | grep veau
[   24.294638] [    T498] nouveau 0000:01:00.0: vgaarb: deactivate vga console
[   24.294737] [    T498] nouveau 0000:01:00.0: NVIDIA GK107 (0e7010a2)
[   24.407258] [    T498] nouveau 0000:01:00.0: bios: version 80.07.42.00.08
[   24.408436] [    T498] nouveau 0000:01:00.0: fb: 2048 MiB DDR3
[   25.505094] [    T498] nouveau 0000:01:00.0: DRM: VRAM: 2048 MiB
[   25.505104] [    T498] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[   25.505110] [    T498] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[   25.506722] [    T498] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[   25.508379] [    T498] snd_hda_intel 0000:01:00.1: bound 0000:01:00.0 (ops nv50_audio_component_bind_ops [nouveau])
[   25.509848] [    T498] [drm] Initialized nouveau 1.4.0 for 0000:01:00.0 on minor 0
[   25.511443] [    T498] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DVI-I-1
[   25.522425] [    T498] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
[   25.522443] [    T498] nouveau 0000:01:00.0: [drm] Cannot find any crtc or sizes
[   25.557584] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DVI-I-1
[   25.568574] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
[   25.568595] [     T27] nouveau 0000:01:00.0: [drm] Cannot find any crtc or sizes
[   25.570020] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DVI-I-1
[   25.580978] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
[   25.580988] [     T27] nouveau 0000:01:00.0: [drm] Cannot find any crtc or sizes
[   25.582427] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DVI-I-1
[   25.593385] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
[   25.593395] [     T27] nouveau 0000:01:00.0: [drm] Cannot find any crtc or sizes
[   25.594823] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for DVI-I-1
[   25.605784] [     T27] nouveau 0000:01:00.0: DRM: DDC responded, but no EDID for HDMI-A-1
[   25.605799] [     T27] nouveau 0000:01:00.0: [drm] Cannot find any crtc or sizes
#

I am not a programmer, don't know (or want to know) how to use OBS, and cannot do detailed bisections requiring compiling. Attachment cmdline options include drm.debug=255 dmesg-nvGK107-k61100-202409170250.txt