1.原来，是英特尔的集显

2.添加N卡驱动

1. 检查是否有GPU显卡，我电脑一张集显，一张独显，很清楚。如果不清楚的可以用 lspci | grep -i nvidia查看：

linux2021@dahu:~$ lspci | grep -i nvidia
01:00.0 VGA compatible controller: NVIDIA Corporation GP106M [GeForce GTX 1060 Mobile] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GP106 High Definition Audio Controller (rev a1)
linux2021@dahu:~$ 

2. 检测推荐的驱动ubuntu-drivers devices

linux2021@dahu:~$ ubuntu-drivers devices

== /sys/devices/pci0000:00/0000:00:1c.0/0000:02:00.0 ==
modalias : pci:v00008086d000024FDsv00008086sd00009010bc02sc80i00
vendor   : Intel Corporation
model    : Wireless 8265 / 8275
manual_install: True
driver   : backport-iwlwifi-dkms - distro free

== /sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0 ==
modalias : pci:v000010DEd00001C20sv00001D72sd00001706bc03sc00i00
vendor   : NVIDIA Corporation
model    : GP106M [GeForce GTX 1060 Mobile]
driver   : nvidia-driver-460 - distro non-free
driver   : nvidia-driver-390 - distro non-free
driver   : nvidia-driver-450-server - distro non-free
driver   : nvidia-driver-460-server - distro non-free recommended
driver   : nvidia-driver-418-server - distro non-free
driver   : nvidia-driver-450 - distro non-free
driver   : xserver-xorg-video-nouveau - distro free builtin

3. 安装驱动
   (1)自动安装合适的版本

sudo ubuntu-drivers autoinstall

(2) 安装指定版本
如：

sudo apt-get install nvidia-driver-390

4. 重启
   安装成功

查看详细信息：

linux2021@dahu:~$ nvidia-smi
Fri May 14 11:24:15 2021       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 460.73.01    Driver Version: 460.73.01    CUDA Version: 11.2     |
|-------------------------------+----------------------+----------------------+
| 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  GeForce GTX 1060    Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   46C    P3    17W /  N/A |    241MiB /  6078MiB |      1%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      2181      G   /usr/lib/xorg/Xorg                120MiB |
|    0   N/A  N/A      3032      G   /usr/bin/gnome-shell               47MiB |
|    0   N/A  N/A      3895      G   ...AAAAAAAAA= --shared-files       68MiB |
+-----------------------------------------------------------------------------+