有没有 V 友使用双卡的时候遇到这个问题，我在 windows 上安装驱动是能识别两张卡，在 Ubuntu 上只能识别一张，主板是华硕 X670E-F 第一个 pcie 全长插槽支持 5.0x16 第二个只支持 4.0 x4 不支持拆分 x8 x8 但是在 windows 下安装好驱动 nvidia-smi 能识别到两张卡都能工作，单独测每张卡都是好的，在 ubuntu 24.04 桌面和 server 都不行只能识别到第一个 pcie 插槽的卡。 主板设置，Resizable BAR 关闭的，Above 4G Decoding 开启 双卡, Ubuntu
有没有朋友遇到这种情况给点建议下面是日志 sudo dmesg | grep -i nvidia [ 7.143512] nvidia: loading out-of-tree module taints kernel. [ 7.143518] nvidia: module license 'NVIDIA' taints kernel. [ 7.143520] nvidia: module verification failed: signature and/or required key missing - tainting kernel [ 7.143520] nvidia: module license taints kernel. [ 7.213959] nvidia-nvlink: Nvlink Core is being initialized, major device number 235 [ 7.229299] nvidia 0000:01:00.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=none:owns=none [ 7.287510] nvidia 0000:05:00.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=none:owns=none [ 7.322709] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:01.1/0000:01:00.1/sound/card0/input15 [ 7.322731] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:01.1/0000:01:00.1/sound/card0/input16 [ 7.322750] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:01.1/0000:01:00.1/sound/card0/input17 [ 7.322767] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:01.1/0000:01:00.1/sound/card0/input18 [ 7.346135] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 580.95.05 Tue Sep 23 10:11:16 UTC 2025 [ 7.372805] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 580.95.05 Tue Sep 23 09:41:17 UTC 2025 [ 7.375236] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver [ 7.385160] input: HDA NVidia HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:02.1/0000:03:00.0/0000:04:00.0/0000:05:00.1/sound/card2/input19 [ 7.385185] input: HDA NVidia HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:02.1/0000:03:00.0/0000:04:00.0/0000:05:00.1/sound/card2/input20 [ 7.385202] input: HDA NVidia HDMI/DP,pcm=8 as /devices/pci0000:00/0000:00:02.1/0000:03:00.0/0000:04:00.0/0000:05:00.1/sound/card2/input21 [ 7.385217] input: HDA NVidia HDMI/DP,pcm=9 as /devices/pci0000:00/0000:00:02.1/0000:03:00.0/0000:04:00.0/0000:05:00.1/sound/card2/input22 [ 9.028308] [drm] Initialized nvidia-drm 0.0.0 for 0000:01:00.0 on minor 1 [ 9.070544] nvidia 0000:01:00.0: vgaarb: deactivate vga console [ 9.116203] fbcon: nvidia-drmdrmfb (fb0) is primary device [ 9.116207] nvidia 0000:01:00.0: [drm] fb0: nvidia-drmdrmfb frame buffer device [ 9.134266] [drm] [nvidia-drm] [GPU ID 0x00000500] Loading driver [ 11.778846] [drm:nv_drm_dev_load [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000500] Failed to allocate NvKmsKapiDevice [ 11.792882] nvidia_uvm: module uses symbols nvUvmInterf
