大家晚上好，我是 Ubuntu 新手。我几乎成功安装了 Xubuntu 20.04。我说几乎是因为我无法让外接屏幕工作。很难让它被识别（Nvidia 驱动程序 455 无法做到这一点）。我降级到驱动程序 450：屏幕被识别但变黑。
有人有解决方案吗？如果您需要更具体的提示，请不要犹豫。
希望以下内容能有所帮助:)
此致，
吉米
j@j-Nitro-AN515-44:~$ lspci -vnn | grep -A12 '\''[030[02]\]' | grep -Ei "vga|3d|display|kernel"
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1f95] (rev a1) (prog-if 00 [VGA controller])
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia
05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir [1002:1636] (rev c7) (prog-if 00 [VGA controller])
Kernel driver in use: amdgpu
Kernel modules: amdgpu
j@j-Nitro-AN515-44:~$
j@j-Nitro-AN515-44:~$ uname -a
Linux s-Nitro-AN515-44 5.8.0-33-generic #36~20.04.1-Ubuntu SMP Wed Dec 9 17:01:13 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
j@j-Nitro-AN515-44:~$
j@j-Nitro-AN515-44:~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 16384 x 16384
eDP connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.01*+
1680x1050 60.01
1280x1024 60.01
1440x900 60.01
1280x800 60.01
1280x720 60.01
1024x768 60.01
800x600 60.01
640x480 60.01
HDMI-1-0 connected 1920x1080+1920+0 531mm x 299mm
1920x1080 60.00*+
1680x1050 59.95
1440x900 74.98 59.89
1280x1024 75.02 60.02
1280x720 60.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 72.81 59.94
j@j-Nitro-AN515-44:~$
j@j-Nitro-AN515-44:~$ dpkg -l | grep -v ^ii
Souhait=inconnU/Installé/suppRimé/Purgé/H=à garder
| État=Non/Installé/fichier-Config/dépaqUeté/échec-conFig/H=semi-installé/W=attend-traitement-déclenchements
|/ Err?=(aucune)/besoin Réinstallation (État,Err: majuscule=mauvais)
||/ Nom Version Architecture Description
+++-=========================================-=====================================-============-======================================================================================================
rc libnvidia-compute-455:amd64 455.38-0ubuntu0.20.04.1 amd64 NVIDIA libcompute package
rc libpython2.7-minimal:amd64 2.7.18-1~20.04 amd64 Minimal subset of the Python language (version 2.7)
rc linux-image-5.4.0-42-generic 5.4.0-42.46 amd64 Signed kernel image generic
rc linux-image-5.4.0-54-generic 5.4.0-54.60 amd64 Signed kernel image generic
rc linux-modules-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-5.4.0-54-generic 5.4.0-54.60 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-extra-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-extra-5.4.0-54-generic 5.4.0-54.60 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
rc linux-modules-nvidia-455-5.4.0-54-generic 5.4.0-54.60 amd64 Linux kernel nvidia modules for version 5.4.0-54
rc nvidia-compute-utils-455 455.38-0ubuntu0.20.04.1 amd64 NVIDIA compute utilities
rc nvidia-dkms-455 455.38-0ubuntu0.20.04.1 amd64 NVIDIA DKMS package
rc nvidia-kernel-common-455 455.38-0ubuntu0.20.04.1 amd64 Shared files used with the kernel module
rc python2.7-minimal 2.7.18-1~20.04 amd64 Minimal subset of the Python language (version 2.7)
j@j-Nitro-AN515-44:~$
j@j-Nitro-AN515-44:~$ dpkg -l | grep nvidia
ii libnvidia-cfg1-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA binary OpenGL/GLX configuration library
ii libnvidia-common-450 450.80.02-0ubuntu0.20.04.2 all Shared files used by the NVIDIA libraries
ii libnvidia-compute-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA libcompute package
ii libnvidia-compute-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVIDIA libcompute package
rc libnvidia-compute-455:amd64 455.38-0ubuntu0.20.04.1 amd64 NVIDIA libcompute package
ii libnvidia-decode-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVIDIA Video Decoding runtime libraries
ii libnvidia-encode-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVENC Video Encoding runtime library
ii libnvidia-extra-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 Extra libraries for the NVIDIA driver
ii libnvidia-fbc1-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-gl-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-ifr1-450:amd64 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii libnvidia-ifr1-450:i386 450.80.02-0ubuntu0.20.04.2 i386 NVIDIA OpenGL-based Inband Frame Readback runtime library
rc linux-modules-nvidia-455-5.4.0-54-generic 5.4.0-54.60 amd64 Linux kernel nvidia modules for version 5.4.0-54
ii linux-modules-nvidia-455-5.4.0-58-generic 5.4.0-58.64 amd64 Linux kernel nvidia modules for version 5.4.0-58
ii nvidia-compute-utils-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA compute utilities
rc nvidia-compute-utils-455 455.38-0ubuntu0.20.04.1 amd64 NVIDIA compute utilities
ii nvidia-dkms-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA DKMS package
rc nvidia-dkms-455 455.38-0ubuntu0.20.04.1 amd64 NVIDIA DKMS package
ii nvidia-driver-430 440.100-0ubuntu0.20.04.1 amd64 Transitional package for nvidia-driver-440
ii nvidia-driver-440 450.80.02-0ubuntu0.20.04.2 amd64 Transitional package for nvidia-driver-450
ii nvidia-driver-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA driver metapackage
ii nvidia-kernel-common-450 450.80.02-0ubuntu0.20.04.2 amd64 Shared files used with the kernel module
rc nvidia-kernel-common-455 455.38-0ubuntu0.20.04.1 amd64 Shared files used with the kernel module
ii nvidia-kernel-source-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA kernel source package
ii nvidia-prime 0.8.14 all Tools to enable NVIDIA's Prime
ii nvidia-settings 440.82-0ubuntu0.20.04.1 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-utils-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA driver support binaries
ii screen-resolution-extra 0.18build1 all Extension for the nvidia-settings control panel
ii xserver-xorg-video-nvidia-450 450.80.02-0ubuntu0.20.04.2 amd64 NVIDIA binary Xorg driver
j@j-Nitro-AN515-44:~$
配置：Acer Nitro 5 AN515-44 | Xubuntu 20.04 | XFCE 4.14 | 内核 5.8.0-33 | AMD Ryzen 5 4600H | 8 核 | GTX 1650 TI (4 核)、AMD Radeon Vega 6 和 Optimus
答案1
我自己并不是高级用户，但我也许能够提供帮助。
首先：你是如何安装驱动程序的？你使用软件与更新的“附加驱动程序”选项卡？
其次：您是否检查过哪个 GPU 处于活动状态？为此，请prime-select query在终端中使用。要切换到独立 GPU，请使用sudo prime-select nvidia。在某些发行版上，您需要注销并重新登录以应用更改，甚至重新启动。
最后：无论选择哪种 GPU，问题是否仍然存在？
答案2
晚上好，
我在这里找到了答案： nvidia-ubuntu-20-04-hdmi-第二台显示器屏幕空白但可以检测到 xrandr
我不得不说，我还没有明白以下修改的最终目的，但不管怎样，我都尝试过了，即使我冒着必须重新安装所有内容的风险。
我“只”需要修改位于此处 /usr/share/X11/xorg.conf.d 的文件 10-amdgpu.conf 和 10-nvidia.conf。首先，您需要被授权在这些文件中进行写入：
j@j-Nitro-AN515-44:~$ sudo chmod o+w /usr/share/X11/xorg.conf.d/10-amdgpu.conf
j@j-Nitro-AN515-44:~$ sudo chmod o+w /usr/share/X11/xorg.conf.d/10-nvidia.conf
然后 ：
打开文件 10-amdgpu.conf，将以下行替换驱动程序“amdgpu”经过驱动程序“模式设置”并保存。
打开文件 10-nvidia.conf，添加以下行选项“PrimaryGPU”“是”就在线前结束部分并保存。
希望它能够帮助别人！
如果有人能解释一下修改/添加的线条的最终目的，我很感兴趣。我想学钓鱼:)
祝你晚安，
吉米