Today, I notice that all wireless networks disappear on my Dell laptop and I can't get on the internet through wireless networks. I just got the latest version Deepin 15.10.2 installed a few days ago. I don't know whether that is the cause or not. After some online search, I haven't found a solution yet. I had tried to run some commands, but none of them are available on my laptop such as "lspci -knn|grep Net -A3" and "inxi -F". I used to need to run a command "sudo modprobe b43" to get the wireless network works.
中文 
deepin 
Today, I notice that all wireless networks disappear on my Dell laptop and I can't get on the internet through wireless networks. I just got the latest version Deepin 15.10.2 installed a few days ago. I don't know whether that is the cause or not. After some online search, I haven't found a solution yet. I had tried to run some commands, but none of them are available on my laptop such as "lspci -knn|grep Net -A3" and "inxi -F". I used to need to run a command "sudo modprobe b43" to get the wireless network works.
今天，我注意到我的戴尔笔记本电脑上的所有无线网络都消失了，我无法通过无线网络上网。 我刚刚在几天前安装了Deepin的最新版本15.10.2。 我不知道这是不是原因。 经过一些在线搜索，我还没有找到解决方案。 我试过运行一些命令，但我的笔记本电脑上都没有。
Please help me out.
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Update:
After I run the update with a wired network connection, the problem disappears though I haven't installed any updated files yet.