Detailed steps for deepin20 to install NVIDIA closed-source drivers

Step 1: Install the deep "graphics driver"

There is no graphics driver manager by default in deepin v20 , and you need to install it from the command line. The command is as follows (there were errors at first, but when I opened the app store for the first time, I could install it, which was amazing):

sudo apt install deepin-graphics-driver-manager

Install the Deepin "graphics driver", switch to the Intel default driver, then restart twice. After confirming that the switch is successful, proceed to the next step.

Step 2: Uninstall NVIDIA open source driver

If you have just installed the system and have not done anything, this step can be omitted.

sudo apt autoremove nvidia-*

Step 3: Disable nouveau driver

This step is also the most critical, which is to disable the nouveau driver. Without further ado, here is the code (remember to switch to root privileges when opening the terminal).

 sudo dedit /etc/modprobe.d/blacklist.conf

Copy the following content in the opened blacklist.conf file and save and close:

blacklist nouveau
blacklist lbm-nouveau
options nouveau modeset=0
alias nouveau off
alias lbm-nouveau off

After saving and closing the text, continue to enter the code in the terminal:

sudo update-initramfs -u

Well, as of now, all the preliminary preparations for installing NVIDIA graphics cards with dual graphics cards have been completed!

Step 4: Install NVIDIA closed-source driver

Step 1: Open the terminal and use the command with root privileges:

sudo apt install nvidia-driver

Then start installing the latest NVIDIA graphics card driver in the terminal. If you need to confirm the installation, just enter "y" and press Enter.

After the first step of installation is completed, before the second step, use the command:

lspci | egrep "VGA|3D"

Check the first number displayed. My NVIDIA graphics card shows "01:00:00" at the front, so replace the "X:X:X" at the back with "1:0:0" (just compare and change it according to the numbers output by your computer)

Step 2: Use the command:

sudo dedit /etc/X11/xorg.conf

Copy the following content in the opened text file (convert it here: 01:00:00 --> 1:0:0, i.e. PCI:1:0:0):

 Section "Module"
  Load "modesetting"
 EndSection
 Section "Device"
  Identifier "nvidia"
  Driver "nvidia"
  BusID "PCI:X:X:X"  
  Option "AllowEmptyInitialConfiguration"
 EndSection

Step 3: Use command:

sudo dedit ~/.xinitrc

Similarly, copy the following content in the opened text, then save and close the text.

xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto
xrandr --dpi 96

Step 4: Use the command:

sudo dedit /etc/lightdm/display_setup.sh

Similarly, copy the following content in the opened text, then save and close the text.

#!/bin/sh
xrandr --setprovideroutputsource modesetting NVIDIA-0
xrandr --auto
xrandr --dpi 96

Step 5: Use the command to grant the text in "Step 4" execution permission:

sudo chmod +x /etc/lightdm/display_setup.sh

Step 6: Use command:

sudo dedit /etc/lightdm/lightdm.conf

In the opened text, find the line [Seat:*] and add the following code below the line [Seat:*] :

display-setup-script=/etc/lightdm/display_setup.sh

Step 5: nvidia-smi verification

At this point, all installation work is completed. Then restart the system. After entering nvidia-smi in the terminal, if the graphics card driver information is printed out, it means that the installation is successful.

If there is no response when you enter nvidia-smi in the terminal, you need to execute the following command:

sudo apt update -y && sudo apt install nvidia-smi -y

An error may be reported that the dependencies are not found, so just install the required dependencies according to the prompts.

sudo apt install plymouth-themes console-setup

After executing the nvidia-smi command, the installation is successful.

refer to

The above content is reformatted and organized based on https://bbs.deepin.org/forum.php?mod=viewthread&tid=192957 to serve as a backup for future installations.

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