Ubuntu usb wireless network card cannot be connected to or dropped

Ubuntu usb wireless network card can not connect to the problem of disconnection 1. view their own usb network card Java code lsusb 2. Download driver I found out is rtl8188cu802.11n WLAN to the official website download: http://www.realtek.com.tw/downloads/downloadsView.aspx? Langid = 1 & PNid = 48 & PFid = 48 & Level = 5 & Conn = 4 & DownTypeID = 3 & GetDown = false & Downloads = true # RTL8188CUS 3. install the driver and unzip the package directly. Plug in the usb wireless network card and run the installation Java code $ cd RTL8188C_8192C_USB_linux_v3.4.4_4749.20121105/$ sudo sh install. sh $ cp/etc/modprobe. d/blacklist. conf. /blacklist. conf. bak # blacklist. add blacklist rtl8192cu $ echo blacklist rtl8192cu to the end of the conf file | sudo tee-a/etc/modprobe. d/blacklist. conf 4. restart