Broadcom Nic cannot be connected to the network in linux (in some cases-

International practice:

Actually, I am a computer idiot. Why does a computer idiot do development? The reason is incredible and simple-"because development looks cool !", So why is it necessary to develop at an age? The reason is simpler. "When I go back to God, I find that I am old !" --- How long is the reflex arc! After entering this line, I went to buy my computer for the first time. As a result, I was treated as a fat goat. I went home and listened to my friend's opinion. I checked the model online and gave me 800 RMB in white! This made me so sleepy that I could not afford to buy a dress and only wear jeans. It was really difficult to calm down and feel angry until today. The topic is far away ......

In fact, I did not install the system myself before last week (however, I have downloaded ubuntu12.04 for installation once, in the win7 environment, I forget whether to directly double-click the installation or run the installation on a virtual machine. It is as simple as installing any software or game. I don't think this is a real installation system ), at this moment, I have not installed my own windows system.

One day I thought I had to reinstall the system. The reason was that a rising star was installed on my computer, and all kinds of anti-virus software reported "virus, please be vigilant !", The key is that I did not find the uninstall program of rising. I used tools such as 360 or Kingsoft Software management to uninstall rising. Then it gave me a warning, tell me what a malicious program intends to modify it, and then tell me that it has been blocked by it--| if we see it here, I thought, "Why is this idiot so stupid? You can't solve such a simple problem?", so I'm sorry ..... the final result is that I want to reinstall the system!

In the past 12 years, I installed ubuntu12.04 on Windows 7 just as I installed the application software. At that time, it was very cool to use and the interface was handsome ~ Writing commands on the terminal to install software is really a breeze ~ Although the game was purely handsome at the time, the price was how google installed the required eclipse and jdk in the middle of the night. Why did the qq plug-in be integrated, in the end, qq friends were all deleted with one click (that classmate, just laugh at you, be careful with your teeth !), However, at that time, I felt that linux was really cool, and my spam was very smooth and comfortable. So this time, I want to install ubuntu to play with the system.

When I went to the official ubuntu website, I saw ubuntu kylin recommended on the homepage. In fact, I didn't like this name very much, but I saw some commonly used software in China, then, according to the instructions found on the Internet, the USB flash disk installation starter was created according to the instructions, and then the installation was successful. Then I am happy to look at the familiar interface style and feel that I am really cool ~~ Then you will find that you cannot connect to wifi ........

At that time, I found a mess on the Internet. After a long time, I did not solve the problem. It was so sleepy that I went to bed. I woke up and started the system the next day, okay--| so I am happy to use it.

However, I found that the desktop application was too slow! Click the browser to wait for 5-10 seconds, and click home for 5-10 seconds, and then add the prompt "system error, submit bug" without any time "..... it's really an impulse to drop your computer. So google, everyone said it was unity's fault! But I want to use ubuntu again, and then I thought, it must be kylin's error. Try another version. Then I went down ubuntu12.04, prepared the USB flash drive installation according to the instructions, and installed the system happily. The system was stuck on the system installation loading interface--|, I was thinking, it must have been my mistake, but at this time the network was stuck, and google couldn't open it. Just a few days ago, I got a linux deepin, So I thought about it. I just tried to install it, as a result, everything went smoothly, the installation was complete, and the interface was very beautiful. There were also a lot of supported applications, which were not so difficult. But the problem is... I couldn't connect to wifi... so I took the mobile phone baidu and said it was a driver problem on the Internet. How can I download the driver? You can directly plug in the network cable and install something in the wired network environment. Then I find the root network cable, plug it in, or cannot connect to the network. In the end, I was so bold and confused! Done!

 

Start:

First, check the model of your Nic and enter the command lspci on the terminal.

You can see your Nic model, for example, my network card is broadcom bcm4313, And then you can see the description of an additional driver in the additional driver.

Check whether your Nic model is included and whether the driver is active. If yes, remove it. After the driver is removed, remember to restart (in fact, I used to wait for a pop-up box to remind me to restart-| ). After the restart, if the problem is resolved, it is correct. If not, continue to google ~

 

Note: In fact, I don't expect anyone to see it here. I also know that there is too much saliva ~ But I still want to ask why the designer wants to create a dedicated driver for these models of NICs? This is usually done. It must be because these models of NICs have problems with the network connection before they need to create a dedicated driver, probably. But now it seems to be a reverse movement. Is there any curious story about the revolution? How are you doing?