Xorg configuration - two NVidia cards, xinerama breaks hardware acceleration, 390.25 current driver

Okay, removing

options nvidia-drm modeset=1

and updating initramfs.

Same issue - no valid metamode BaseMosaic configuration.

Current xorg.conf:

ection "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "HP E221"
    HorizSync       24.0 - 94.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "HP E221"
    HorizSync       24.0 - 94.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor2"
    VendorName     "Unknown"
    ModelName      "HP E221"
    HorizSync       24.0 - 94.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor3"
    VendorName     "Unknown"
    ModelName      "HP E221"
    HorizSync       24.0 - 94.0
    VertRefresh     50.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 580"
    BusID          "PCI:3:0:0"
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 580"
    BusID          "PCI:5:0:0"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "BaseMosaic" "True"
    Option         "MetaModes" "GPU-1.TV-2: 1920x1080 +0+0, GPU-0.TV-0:  1920x1080 +1920+0, GPU-1.TV-2: 1920x1080 +3840+0"
#    Option         "nvidiaXineramaInfo" "FALSE"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

nvidia-query-info lists:

root@nope:~# nvidia-xconfig --query-gpu-info
Number of GPUs: 2

GPU #0:
  Name      : GeForce GTX 580
  UUID      : GPU-5cbd392c-7fc6-23f1-ab15-9261c1ed9f76
  PCI BusID : PCI:3:0:0

  Number of Display Devices: 2

  Display Device 0 (TV-0):
      EDID Name             : HP E221
      Minimum HorizSync     : 24.000 kHz
      Maximum HorizSync     : 94.000 kHz
      Minimum VertRefresh   : 50 Hz
      Maximum VertRefresh   : 76 Hz
      Maximum PixelClock    : 170.000 MHz
      Maximum Width         : 1920 pixels
      Maximum Height        : 1080 pixels
      Preferred Width       : 1920 pixels
      Preferred Height      : 1080 pixels
      Preferred VertRefresh : 60 Hz
      Physical Width        : 500 mm
      Physical Height       : 290 mm

  Display Device 1 (TV-2):
      EDID Name             : HP E221
      Minimum HorizSync     : 24.000 kHz
      Maximum HorizSync     : 94.000 kHz
      Minimum VertRefresh   : 50 Hz
      Maximum VertRefresh   : 76 Hz
      Maximum PixelClock    : 170.000 MHz
      Maximum Width         : 1920 pixels
      Maximum Height        : 1080 pixels
      Preferred Width       : 1920 pixels
      Preferred Height      : 1080 pixels
      Preferred VertRefresh : 60 Hz
      Physical Width        : 500 mm
      Physical Height       : 290 mm

GPU #1:
  Name      : GeForce GTX 580
  UUID      : GPU-4afb5f0b-c4fb-be37-9573-99aac2abd504
  PCI BusID : PCI:5:0:0

  Number of Display Devices: 2

  Display Device 0 (TV-0):
      EDID Name             : HP E221
      Minimum HorizSync     : 24.000 kHz
      Maximum HorizSync     : 94.000 kHz
      Minimum VertRefresh   : 50 Hz
      Maximum VertRefresh   : 76 Hz
      Maximum PixelClock    : 170.000 MHz
      Maximum Width         : 1920 pixels
      Maximum Height        : 1080 pixels
      Preferred Width       : 1920 pixels
      Preferred Height      : 1080 pixels
      Preferred VertRefresh : 60 Hz
      Physical Width        : 500 mm
      Physical Height       : 290 mm

  Display Device 1 (TV-2):
      EDID Name             : HP E221
      Minimum HorizSync     : 24.000 kHz
      Maximum HorizSync     : 94.000 kHz
      Minimum VertRefresh   : 50 Hz
      Maximum VertRefresh   : 76 Hz
      Maximum PixelClock    : 170.000 MHz
      Maximum Width         : 1920 pixels
      Maximum Height        : 1080 pixels
      Preferred Width       : 1920 pixels
      Preferred Height      : 1080 pixels
      Preferred VertRefresh : 60 Hz
      Physical Width        : 500 mm
      Physical Height       : 290 mm

You will find error log attached.

nvidia-bug-report.log.gz (105 KB)