NiceDCV and Rocky 9.3 Info

Sysadmins
13

You can avoid the EDID route and have access to most/all resolutions by adding this option to the screen section:

    Option         "ModeValidation" "NoDFPNativeResolutionCheck,NoVirtualSizeCheck,NoEdidMaxPClkCheck,NoMaxPClkCheck,NoHorizSyncCheck,NoVertRefreshCheck,NoWidthAlignmentCheck,AllowNonEdidModes"

Add this to the GPU/device section to tell the GPU/xorg its connected. Choose whatever output your GPU has:

    Option         "ConnectedMonitor" "DFP-2"

For reference, here is my xorg.conf. I don’t have anything physically connected to my GPU.

# nvidia-settings: X configuration file generated by nvidia-settings

Section "ServerLayout"
    Identifier     "Layout0"
    Screen	0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    InputDevice  "DCV Stylus Pen"
    InputDevice  "DCV Stylus Eraser"
    InputDevice  "DCV Touchscreen"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/input/mice"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    HorizSync       18.0 - 18.0
    VertRefresh     24.0 - 60.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName	   "NVIDIA RTX A5000"
    Option         "ConnectedMonitor" "DFP-2"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-2"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    Option         "ModeValidation" "NoDFPNativeResolutionCheck,NoVirtualSizeCheck,NoMaxPClkCheck,NoHorizSyncCheck,NoVertRefreshCheck,NoWidthAlignmentCheck,AllowNonEdidModes"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "InputDevice"
  Identifier "DCV Stylus Pen"
  Driver "dcvinput"
EndSection

Section "InputDevice"
  Identifier "DCV Stylus Eraser"
  Driver "dcvinput"
EndSection

Section "InputDevice"
  Identifier "DCV Touchscreen"
  Driver "dcvinput"
EndSection
2 Likes