nvidia-smi
error
NVIDIA-SMI has failed because it couldn't communicate with the NVIDIA driver

Reason: the Ubuntu kernel has been updated, which is inconsistent with the kernel when the graphics card driver was installed

Solution 1
reduce the system kernel, select low kernel in the boot preference, or change the configuration file to automatically select low version kernel by default boot. Refer to the link for the method

Solution 2
update the graphics card driver

view the installed driver version

ls /usr/src

Display my graphics driver for nvidis-470 reinstall updated graphics driver

sudo apt install --reinstall nvidia-driver-470

After the update is successful, restart the computer

nvidia-smi

It can be displayed normally

Thu Mar 24 10:18:37 2022       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 470.103.01   Driver Version: 470.103.01   CUDA Version: 11.4     |
|-------------------------------+----------------------+----------------------+
| 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 GeForce ...  Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   37C    P0    N/A/ N/A |    439MiB/ 4046MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      3149      G   /usr/lib/xorg/Xorg                193MiB |
|    0   N/A  N/A      3314      G   /usr/bin/gnome-shell               70MiB |
|    0   N/A  N/A      4010      G   /usr/lib/firefox/firefox          171MiB |
+-----------------------------------------------------------------------------+

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