解决 NVIDIA 显卡驱动问题
你的系统检测到了 NVIDIA 显卡，但它目前没有被声明，也就是说可能没有正确安装驱动程序。你需要安装 NVIDIA 驱动程序来激活这块显卡。以下是安装步骤：

步骤 1：添加 NVIDIA 驱动 PPA
首先，确保你的系统软件包是最新的：

sudo apt update sudo apt upgrade  

然后，添加 NVIDIA 驱动程序的 PPA：

sudo add-apt-repository ppa:graphics-drivers/ppa sudo apt update  

步骤 2：安装 NVIDIA 驱动程序
查找并安装推荐的驱动程序：

ubuntu-drivers devices  

输出示例：

 == /sys/devices/pci0000:c9/0000:c9:02.0/0000:ca:00.0 == modalias : pci:v000010DEd000020F5sv000010DEsd00001799bc03sc02i00 vendor   : NVIDIA Corporation driver   : nvidia-driver-545 - distro non-free driver   : nvidia-driver-535 - distro non-free recommended driver   : nvidia-driver-535-open - distro non-free driver   : nvidia-driver-535-server-open - distro non-free driver   : nvidia-driver-545-open - distro non-free driver   : nvidia-driver-535-server - distro non-free driver   : xserver-xorg-video-nouveau - distro free builtin 

根据推荐的驱动安装，例如上面的推荐是

driver   : nvidia-driver-535 - distro non-free recommended 

安装

sudo apt install nvidia-driver-535 

步骤 3：重启系统
安装完成后，重启系统以使驱动生效

sudo reboot  

步骤 4：验证驱动安装
重启后，使用 nvidia-smi 命令检查 NVIDIA 驱动是否正确安装并生效：

(base) jiahong@GPUsvr01:~$ nvidia-smi Fri Jul 26 14:02:18 2024 +---------------------------------------------------------------------------------------+ | NVIDIA-SMI 535.183.01             Driver Version: 535.183.01   CUDA Version: 12.2     | |-----------------------------------------+----------------------+----------------------+ | GPU  Name                 Persistence-M | Bus-Id        Disp.A | Volatile Uncorr. ECC | | Fan  Temp   Perf          Pwr:Usage/Cap |         Memory-Usage | GPU-Util  Compute M. | |                                         |                      |               MIG M. | |=========================================+======================+======================| |   0  NVIDIA A800 80GB PCIe          Off | 00000000:CA:00.0 Off |                    0 | | N/A   57C    P0              81W / 300W |  34730MiB / 81920MiB |      2%      Default | |                                         |                      |             Disabled | +-----------------------------------------+----------------------+----------------------+  +---------------------------------------------------------------------------------------+ | Processes:                                                                            | |  GPU   GI   CI        PID   Type   Process name                            GPU Memory | |        ID   ID                                                             Usage      | |=======================================================================================| |    0   N/A  N/A     86880      C   python                                    34718MiB | +---------------------------------------------------------------------------------------+