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The first time I installed Ubuntu 16.04, I met piix4_ The problem of SMBus * * host SMBus controller not enabled makes it impossible to access the Ubuntu desktop. After searching for various solutions on the Internet, I find that the same solution is written in different ways. It’s difficult for novices to understand the lack of a step. So I summarize the detailed solution process and hope to learn from you together. For the first time, I’ll write it in my own format

Difficulty: when I first learned Linux, I didn’t understand the VIM command, which is the biggest difficulty of this method

Step 1: if you can’t enter the desktop operation, press Ctrl + Alt + F1 ~ F6 to enter the command line terminal, use the command to operate, input your own account number, and then enter the password

Step 2: enter the root mode: enter the Su command, and then enter the password you set. There is a pit here. The premise is that you have set the root permission and set the root password. If not, you need to set it; Refer to this article: https://www.cnblogs.com/vitre/p/5227456.html

Step 3: enter the command lsmod | grep I2C_ Piix4, view I2C_ Piix4, note the space here

Step 4: enter the command VI/etc/modprobe.d/blacklist.conf to enter the blacklist. You need to be reminded that you have started to enter the VIM mode. The next step is to use a separate command technique. Because you are a beginner, you have made many mistakes. You can check the VIM commands and get familiar with them. You can see this article: https://blog.csdn.net/weixin_ 37657720/article/details/80645991

Step 5: press g to jump to the last line

Step 6: press I to enter editing mode

Step 7: add a line of blacklist I2C_ Piix4. Here, you can directly input the last line of the original code, and then press enter to form a separate line. This operation is to convert I2C into a single line_ Piix4 is forbidden. Here, I understand that blacklist is like a black box, in which unnecessary things are put and a small black room is closed

Step 8: press ESC to exit editing mode

Step 9: input “: WQ!”, Here is the VIM command, which means forced save and exit

Step 10: input sudo reboot to restart

Basically, the above operation can solve piix4_ SMBus * * host SMBus controller is not enabled, but it can’t guarantee that it can solve the problem of failing to enter the desktop. If it still can’t enter, it’s necessary to find other problems