Bug#1121250: nvidia-xconfig: Generated xorg.conf not working.

Riccardo Gagliarducci inlate at tin.it
Sun Nov 23 19:12:33 GMT 2025


Package: nvidia-xconfig
Version: 550.163.01-1
Severity: important
X-Debbugs-Cc: inlate at tin.it

Dear Maintainer,
the package has different outputs for the same hardware on Debian Bookworm and
Trixie

The result on Bookworm ( nvidia-xconfig version 535.171.04) is correct: it
takes into account multiple video cards
and enables HDMI outputs to work.
The result on Trixie (version 550.163.01), on the other hand, causes Xorg to
fail and clearly fails
to achieve the purpose for which it was executed.

The instructions followed are according to the manual:
https://wiki.debian.org/NVIDIA%20Optimus#Using_NVIDIA_PRIME_Render_Offload

To disable the incorrect configuration the xorg.conf  must be renamed.
Using the configuration created by Bookworm on Trixie solves the problem.

I am attaching the two configurations.

Thank you,
Riccardo


-- System Information:
Debian Release: 13.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.57+deb13-amd64 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages nvidia-xconfig depends on:
ii  libc6                     2.41-12
ii  libpciaccess0             0.17-3+b3
ii  nvidia-installer-cleanup  20240109+1

Versions of packages nvidia-xconfig recommends:
ii  nvidia-driver [nvidia-driver-any]  550.163.01-2

nvidia-xconfig suggests no packages.

-- no debconf information
-------------- next part --------------
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 535.171.04


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Inactive       "InactiveDevice1"
    Inactive       "InactiveDevice1"
    Inactive       "InactiveDevice1"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "InputDevice"

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

Section "InputDevice"

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

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "InactiveDevice1"
    Driver         "modesetting"
    VendorName     "Unknown"
EndSection

Section "Device"
    Identifier     "InactiveDevice1"
    Driver         "modesetting"
    VendorName     "Unknown"
EndSection

Section "Device"
    Identifier     "InactiveDevice1"
    Driver         "modesetting"
    VendorName     "Unknown"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "AllowEmptyInitialConfiguration" "True"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
-------------- next part --------------
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 550.163.01

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0"
    Inactive       "InactiveDevice1"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

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

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

Section "Monitor"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Unknown"
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BusID          "PCI:1:0:0"
EndSection

Section "Device"
    Identifier     "InactiveDevice1"
    Driver         "modesetting"
    VendorName     "Unknown"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "AllowEmptyInitialConfiguration" "True"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection



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