系统规格：
- 锐龙 9 3900x
- 64GB 内存
- GeForce GTX 960 (GM206)
- 运行 nvidia-driver-515 (专有，已测试)
- 4 个显示器连接到 GTX 960，其中 3 个连接到 DP，1 个连接到 HDMI
操作系统：
- Ubuntu 22.04.1 LTS
- Gnome 42.4
- 窗口化 X11
我已经安装了 Ubuntu 22.04，但我的一台显示器在 Ubuntu 中显示可用，但显示器本身没有信号。更换 HDMI 电缆所在的显示器会将问题转移到该显示器上，并且所有显示器在 Windows 上都可以正常工作，因此我怀疑是驱动程序问题，而不是显示器本身的问题。
输出：
lsb_release-a：
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.1 LTS
Release: 22.04
Codename: jammy
uname -a：
$ uname -a
Linux HostName 5.15.0-50-generic #56-Ubuntu SMP Tue Sep 20 13:23:26 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
xrandr：- 问题连接是 HDMI-0
$ xrandr
Screen 0: minimum 8 x 8, current 4920 x 2520, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 1920x1080+3000+0 (normal left inverted right x axis y axis) 521mm x 293mm
1920x1080 60.00*+ 59.94 50.00
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 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-0 disconnected (normal left inverted right x axis y axis)
DP-1 connected primary 1920x1080+1080+0 (normal left inverted right x axis y axis) 510mm x 290mm
1920x1080 60.00*+
1680x1050 59.95
1280x1024 75.02 60.02
1280x960 60.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32 56.25
640x480 75.00 59.94
DP-2 connected 3440x1440+1080+1080 (normal left inverted right x axis y axis) 797mm x 333mm
3440x1440 100.00*+ 60.02
2560x1440 99.92 59.95
1920x1080 100.00 99.90 60.00 59.94 50.00 50.00
1680x1050 99.85 59.95
1440x900 99.93 59.89
1280x1024 99.96 75.02 60.02
1280x720 59.94 50.00
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 59.93
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 connected 1080x1920+0+600 left (normal left inverted right x axis y axis) 600mm x 340mm
1920x1080 60.00*+
1680x1050 59.95
1600x900 60.00
1440x900 59.89
1280x1024 60.02
1280x720 60.00
1024x768 60.00
800x600 60.32
640x480 59.94
DP-5 disconnected (normal left inverted right x axis y axis)
sudo dmesg | grep drm：
$ sudo dmesg | grep drm
[ 4.261167] systemd[1]: Starting Load Kernel Module drm...
[ 4.275398] systemd[1]: [email protected]: Deactivated successfully.
[ 4.275550] systemd[1]: Finished Load Kernel Module drm.
[ 5.332037] [drm] [nvidia-drm] [GPU ID 0x00000800] Loading driver
[ 6.563315] [drm] Initialized nvidia-drm 0.0.0 20160202 for 0000:08:00.0 on minor 0
[ 22.839683] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.839743] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.839766] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.839789] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.870685] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.870742] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.870766] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.870789] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.902678] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.902761] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.902795] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 22.902826] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
[ 60.081283] [drm:nv_drm_master_set [nvidia_drm]] *ERROR* [nvidia-drm] [GPU ID 0x00000800] Failed to grab modeset ownership
dpkg -l | grep nvidia：
$ dpkg -l | grep nvidia
ii libnvidia-cfg1-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA binary OpenGL/GLX configuration library
ii libnvidia-common-515 515.65.01-0ubuntu0.22.04.1 all Shared files used by the NVIDIA libraries
rc libnvidia-compute-470:amd64 470.141.03-0ubuntu0.22.04.1 amd64 NVIDIA libcompute package
ii libnvidia-compute-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA libcompute package
ii libnvidia-compute-515:i386 515.65.01-0ubuntu0.22.04.1 i386 NVIDIA libcompute package
ii libnvidia-decode-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-515:i386 515.65.01-0ubuntu0.22.04.1 i386 NVIDIA Video Decoding runtime libraries
ii libnvidia-egl-wayland1:amd64 1:1.1.9-1.1 amd64 Wayland EGL External Platform library -- shared library
ii libnvidia-encode-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-515:i386 515.65.01-0ubuntu0.22.04.1 i386 NVENC Video Encoding runtime library
ii libnvidia-extra-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 Extra libraries for the NVIDIA driver
ii libnvidia-fbc1-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-515:i386 515.65.01-0ubuntu0.22.04.1 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-gl-515:amd64 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-515:i386 515.65.01-0ubuntu0.22.04.1 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
rc nvidia-compute-utils-470 470.141.03-0ubuntu0.22.04.1 amd64 NVIDIA compute utilities
ii nvidia-compute-utils-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA compute utilities
rc nvidia-dkms-470 470.141.03-0ubuntu0.22.04.1 amd64 NVIDIA DKMS package
ii nvidia-dkms-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA DKMS package
ii nvidia-driver-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA driver metapackage
rc nvidia-kernel-common-470 470.141.03-0ubuntu0.22.04.1 amd64 Shared files used with the kernel module
ii nvidia-kernel-common-515 515.65.01-0ubuntu0.22.04.1 amd64 Shared files used with the kernel module
ii nvidia-kernel-source-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA kernel source package
ii nvidia-prime 0.8.17.1 all Tools to enable NVIDIA's Prime
ii nvidia-settings 510.47.03-0ubuntu1 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-utils-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA driver support binaries
ii screen-resolution-extra 0.18.2 all Extension for the nvidia-settings control panel
ii xserver-xorg-video-nvidia-515 515.65.01-0ubuntu0.22.04.1 amd64 NVIDIA binary Xorg driver
cat /proc/driver/nvidia/版本
$ cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX x86_64 Kernel Module 515.65.01 Wed Jul 20 14:00:58 UTC 2022
GCC version: gcc version 11.2.0 (Ubuntu 11.2.0-19ubuntu1)
猫/系统/模块/ NVIDIA /版本：
$ cat /sys/module/nvidia/version
515.65.01
dkms 状态：
$ dkms status
nvidia/515.65.01, 5.15.0-50-generic, x86_64: installed
尽管据我所知并不存在不匹配的情况，但我还是要遵循这个问题的答案：https://stackoverflow.com/questions/70276412/how-to-fix-nvrm-api-mismatch-between-client-version-and-kernel-module-version
编辑：上述解决方案不起作用，我仍然缺少一台显示器。
我绝对希望能够理清这个问题，并接受各种想法。