我买了一台新机器，安装 Ubuntu 没有任何问题。但是，支持我的 Nvidia GeForce GTX 1660 Ti 显卡的情况并不多见。我的显示器的分辨率应该是 2560x1440，因为我的旧电脑和 nvidia 卡使用同一个显示器，但只能达到 1900x1200。我看到的第一件奇怪的事情是两个 X 服务器正在运行：
# ps auwx | grep X
root 10883 0.0 0.2 182428 47996 tty1 Sl+ 14:43 0:01 /usr/lib/xorg/Xorg vt1 -displayfd 3 -auth /run/user/123/gdm/Xauthority -background none -noreset -keeptty -verbose 3
root 11087 1.1 0.3 200736 63224 tty7 Sl+ 14:44 0:21 /usr/lib/xorg/Xorg vt7 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -background none -noreset -keeptty -verbose 3
也许还行（？），但我只有一个屏幕。安装 nvidia 支持并重新启动后，一切看起来都还好：
# nvidia-smi
Sat Sep 7 13:37:53 2019
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 430.40 Driver Version: 430.40 CUDA Version: 10.1 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce GTX 166... Off | 00000000:09:00.0 On | N/A |
| 28% 36C P8 17W / 120W | 439MiB / 5935MiB | 2% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| 0 1409 G /usr/lib/xorg/Xorg 18MiB |
| 0 1455 G /usr/bin/gnome-shell 48MiB |
| 0 1708 G /usr/lib/xorg/Xorg 115MiB |
| 0 1838 G /usr/bin/gnome-shell 173MiB |
| 0 2999 G ...uest-channel-token=16139733089795658592 81MiB |
+-----------------------------------------------------------------------------+
还：
# inxi -SGx
System:
Host: ab3ap Kernel: 5.0.0-27-generic x86_64 bits: 64 compiler: gcc
v: 8.3.0 Desktop: Gnome 3.32.2 Distro: Ubuntu 19.04 (Disco Dingo)
Graphics:
Device-1: NVIDIA vendor: ZOTAC driver: nvidia v: 430.40 bus ID: 09:00.0
Display: x11 server: X.Org 1.20.4 driver: nvidia
resolution: 1920x1200~60Hz
OpenGL: renderer: GeForce GTX 1660 Ti/PCIe/SSE2 v: 4.6.0 NVIDIA 430.40
direct render: Yes
# dpkg -l | grep nvidia
ii libnvidia-cfg1-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA binary OpenGL/GLX configuration library
ii libnvidia-common-430 430.40-0ubuntu0~gpu19.04.2 all Shared files used by the NVIDIA libraries
rc libnvidia-compute-418:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 Transitional package for libnvidia-compute-430
ii libnvidia-compute-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA libcompute package
ii libnvidia-compute-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVIDIA libcompute package
ii libnvidia-decode-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVIDIA Video Decoding runtime libraries
ii libnvidia-encode-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVENC Video Encoding runtime library
ii libnvidia-fbc1-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-gl-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-ifr1-430:amd64 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii libnvidia-ifr1-430:i386 430.40-0ubuntu0~gpu19.04.2 i386 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii nvidia-compute-utils-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA compute utilities
ii nvidia-dkms-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA DKMS package
ii nvidia-driver-418 430.40-0ubuntu0~gpu19.04.2 amd64 Transitional package for nvidia-driver-430
ii nvidia-driver-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA driver metapackage
ii nvidia-kernel-common-430 430.40-0ubuntu0~gpu19.04.2 amd64 Shared files used with the kernel module
ii nvidia-kernel-source-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA kernel source package
ii nvidia-prime 0.8.10 all Tools to enable NVIDIA's Prime
ii nvidia-settings 418.56-0ubuntu1 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-utils-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA driver support binaries
ii xserver-xorg-video-nvidia-430 430.40-0ubuntu0~gpu19.04.2 amd64 NVIDIA binary Xorg driver
内核模块在那里：
# find /usr/lib/modules -name nvidia.ko -exec modinfo {} \;
filename: /usr/lib/modules/5.0.0-27-generic/updates/dkms/nvidia.ko
alias: char-major-195-*
version: 430.40
supported: external
license: NVIDIA [...]
然而，随着分辨率降低，坏消息也随之而来：
# nvidia-detector
none
我此刻很困惑。任何想法都非常感谢！
麦克风
答案1
问题解决了。从我的旧显示器上看，HDMI 最大分辨率为 1900x1200。我的旧 Nvidia 卡有一个 DVI 连接器，但这个有 HDMI 和显示端口。只需将 HDMI 换成 DP 即可解决问题。有点尴尬。:-P