（编辑2：已解决；
我首先使用sudo apt purge nvidia*，之后sudo apt install nvidia-driver-525 nvidia-dkms-525重要的是将 nvidia-dkms-525 添加到末尾，然后它就开始工作了。感谢所有回复的人！)
我使用sudo ubuntu-drivers autoinstall并重启了电脑，现在我的屏幕、鼠标和程序出现了奇怪的几秒钟的冻结
此外，我无法降低屏幕分辨率（之前我曾这样做过以提高性能）。目前菜单中只有“原始”分辨率可用。
$ ubuntu-drivers devices
== /sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0 ==
modalias : pci:v000010DEd00001E84sv00001458sd00004008bc03sc00i00
vendor : NVIDIA Corporation
model : TU104 [GeForce RTX 2070 SUPER]
driver : nvidia-driver-450-server - distro non-free
driver : nvidia-driver-510 - distro non-free
driver : nvidia-driver-525-open - distro non-free recommended
driver : nvidia-driver-515 - distro non-free
driver : nvidia-driver-515-server - distro non-free
driver : nvidia-driver-470 - distro non-free
driver : nvidia-driver-525 - distro non-free
driver : nvidia-driver-515-open - distro non-free
driver : nvidia-driver-470-server - distro non-free
driver : xserver-xorg-video-nouveau - distro free builtin
（编辑1：$ nvidia-smi
No devices were found
）
Ubuntu 20.04 Nvidia RTX 2070 Super AMD ryzen 9 3900X 32 GB