当我在 Ubuntu 20.04 上运行时sudo ubuntu-drivers autoinstall，出现以下情况：
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:
The following packages have unmet dependencies:
nvidia-driver-515 : Depends: libnvidia-gl-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: libnvidia-extra-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: libnvidia-decode-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: libnvidia-encode-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: xserver-xorg-video-nvidia-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: libnvidia-cfg1-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Depends: libnvidia-fbc1-515 (= 515.48.07-0ubuntu0.20.04.2) but it is not going to be installed
Recommends: libnvidia-compute-515:i386 (= 515.48.07-0ubuntu0.20.04.2)
Recommends: libnvidia-decode-515:i386 (= 515.48.07-0ubuntu0.20.04.2)
Recommends: libnvidia-encode-515:i386 (= 515.48.07-0ubuntu0.20.04.2)
Recommends: libnvidia-fbc1-515:i386 (= 515.48.07-0ubuntu0.20.04.2)
Recommends: libnvidia-gl-515:i386 (= 515.48.07-0ubuntu0.20.04.2)
E: Unable to correct problems, you have held broken packages.
我的笔记本电脑（戴尔 Inspiron 15 5510，制造商预装了 Ubuntu）也出现了这种情况。
我尝试了很多其他人在网上向其他人推荐的方法，但都不起作用。
这是输出dpkg -l | grep -i nvidia（虽然 515 显示在“软件和更新”用户界面上，但列表中看不到它，但并未使用）：
ii libnvidia-cfg1-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA binary OpenGL/GLX configuration library
ii libnvidia-common-470 470.129.06-0ubuntu0.20.04.1 all Shared files used by the NVIDIA libraries
rc libnvidia-compute-450:amd64 460.91.03-0ubuntu0.20.04.1 amd64 Transitional package for libnvidia-compute-460
ii libnvidia-compute-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA libcompute package
ii libnvidia-compute-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVIDIA libcompute package
ii libnvidia-decode-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVIDIA Video Decoding runtime libraries
ii libnvidia-encode-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVENC Video Encoding runtime library
ii libnvidia-extra-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 Extra libraries for the NVIDIA driver
ii libnvidia-fbc1-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-gl-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-ifr1-470:amd64 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii libnvidia-ifr1-470:i386 470.129.06-0ubuntu0.20.04.1 i386 NVIDIA OpenGL-based Inband Frame Readback runtime library
ii nvidia-compute-utils-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA compute utilities
ii nvidia-dkms-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA DKMS package
ii nvidia-driver-450 460.91.03-0ubuntu0.20.04.1 amd64 Transitional package for nvidia-driver-460
ii nvidia-driver-460 470.129.06-0ubuntu0.20.04.1 amd64 Transitional package for nvidia-driver-470
ii nvidia-driver-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA driver metapackage
ii nvidia-kernel-common-470 470.129.06-0ubuntu0.20.04.1 amd64 Shared files used with the kernel module
ii nvidia-kernel-source-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA kernel source package
ii nvidia-prime 0.8.16~0.20.04.2 all Tools to enable NVIDIA's Prime
ii nvidia-settings 470.57.01-0ubuntu0.20.04.3 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-utils-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA driver support binaries
ii oem-fix-gfx-nvidia-ondemandmode 1.2 all Set the power ondemand mode by default
ii screen-resolution-extra 0.18build1 all Extension for the nvidia-settings control panel
ii xserver-xorg-video-nvidia-470 470.129.06-0ubuntu0.20.04.1 amd64 NVIDIA binary Xorg driver
*顺便说一句，导致我尝试升级驱动程序的初始问题是，有时我的笔记本电脑在进入睡眠状态后无法唤醒，我必须重新启动（这很烦人）。
-- 任何帮助或想法都将不胜感激。提前致谢！
答案1
最终使用aptitude安装驱动程序解决了这个问题。 *正如 Nvidia 论坛所建议的：https://forums.developer.nvidia.com/t/ubuntu-20-04-ubuntu-drivers-unable-to-correct-problems-you-have-held-broken-packages-complaining-about-nvidia-driver-515/227587