我的第二台显示器没有显示在使用 RTX 3090 nVidia GPU 的显示设置中，请参见第一个屏幕截图，我正在使用 Ubuntu 20.04。
我尝试使用下面屏幕截图中显示的所有驱动程序，
Running xrandr I see:
xrandr
Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767
HDMI-0 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 143.86*+ 119.88 99.90 59.95
2560x1080 59.94
1920x1080 120.00 119.88 100.00 100.00 60.00 59.94 50.00 29.97 25.00 23.98
1440x900 59.89
1440x576 50.00
1440x480 59.94
1366x768 59.79
1280x1024 75.02 60.02
1280x720 59.94 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)
运行 dmseg 管道来检查 nvidia 的注册表达式，我得到：dmesg | grep nvidia
[ 7.515909] nvidia: loading out-of-tree module taints kernel.
[ 7.515915] nvidia: module license 'NVIDIA' taints kernel.
[ 7.558852] nvidia-nvlink: Nvlink Core is being initialized, major device number 508
[ 7.559561] nvidia 0000:01:00.0: vgaarb: changed VGA decodes: olddecodes=io+mem,decodes=none:owns=none
[ 7.617777] nvidia-modeset: Loading NVIDIA Kernel Mode Setting Driver for UNIX platforms 510.47.03 Mon Jan 24 22:51:43 UTC 2022
[ 7.632317] [drm] [nvidia-drm] [GPU ID 0x00000100] Loading driver
[ 8.903911] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:01:00.0 on minor 0
[ 9.087932] nvidia_uvm: module uses symbols from proprietary module nvidia, inheriting taint.
[ 9.110820] nvidia-uvm: Loaded the UVM driver, major device number 506.
[ 9.419891] audit: type=1400 audit(1646695235.248:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe" pid=1007 comm="apparmor_parser"
[ 9.419894] audit: type=1400 audit(1646695235.248:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe//kmod" pid=1007 comm="apparmor_parser"
[ 746.910272] [drm:nv_drm_connector_get_modes [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to get mode at modeIndex 1 of NvKmsKapiDisplay 0x00000100
[ 747.758802] [drm:nv_drm_connector_get_modes [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000100] Failed to get mode at modeIndex 12 of NvKmsKapiDisplay 0x00000200
第二台显示器通过显示端口连接，分辨率为 4K。如果您对下一步该怎么做有任何见解，我将不胜感激，我很乐意提供更多信息。