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since I installed ubuntu on my lenovo I can only get wireless internet for about 5 minutes after I restart my computer, and then it just stops responding. My network security is WEP and ethernet connection is good. I'd be great to fix this issue.

sky
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  • Neither **WEP** or **WPA** is wireless network **security**, and should NOT be used **EVER**. *Use either **WPA2** or (preferably) **EAP/RADIUS** authentication.* – david6 Mar 28 '15 at 06:31
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    To assist you, you need to provide more details. What is the output from **`lsusb`**, that relates to the Wireless device? Or provide details from **`sudo lshw`** that identify the wireless chipset. – david6 Mar 28 '15 at 06:33
  • @david6 lsusb is `Bus 002 Device 004: ID 0bda:b728 Realtek Semiconductor Corp. Bus 002 Device 003: ID 5986:055d Acer, Inc Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 003: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub ` – sky Mar 28 '15 at 22:39
  • Device ID **0bda:b728** suggests you should try: http://askubuntu.com/questions/590414/wifi-problems-with-rtl8723be-in-ubuntu-14-04 – david6 Mar 29 '15 at 04:52

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I believe this has been answered before.

First, open a Terminal window (Ctrl Alt T), then type the following:

    rfkill list

If it shows up to be softblocked, then try:

    rfkill unblock all

If it shows up to be hardblocked and any and all wireless switches on your laptop are ON, then there is a conflict between Linux and your BIOS. I have such a conflict on my own Toshiba Satellite, and solved it with the following steps:

First, make sure your Wi-Fi (or any wireless) switch is ON before booting. The BIOS will see it on and leave it that way. Never use 'Fn + F8' or any other methods to turn off the wireless. Use Ubuntu's built-in soft methods instead - that is, by clicking on the icon in the top-left of your screen.

  • `0: hci0: Bluetooth Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: no ` rfkill list output – sky Mar 28 '15 at 22:45