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I shifted from windows to ubuntu for first time on HP r-15 laptop and dual booted ubuntu 14.04 LTS with windows 8.1.But i am having problem with wifi.I can connect to wifi without any problem but after a while it randomly stops working but it is showing that i am connected.When i try to reconnect,it looks like it is trying to reconnect but never do.Only solution for this is to reboot the laptop and everything starts working fine for some time. I read some same questions like that but that are none of my use. I am a beginner in linux. Thanks for help in advance.

Edit - this was the output of the command suggested by Pilot6

0a:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    Subsystem: Hewlett-Packard Company Device [103c:2231]
    Kernel driver in use: rtl8723be
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  • Please edit your question and add output of lspci -knn | grep Net -A2 terminal command.
    – Pilot6
    Jul 11, 2015 at 7:57
  • When it fails, run dmesg. There may be an informative error message for you. Also, see if running sudo service network-manager restart instead of rebooting fixes it for a while. Jul 11, 2015 at 8:13
  • working fine for me... sorry but don't know how to mark this answer as accepted
    – Rajdeep
    Aug 4, 2015 at 19:14
  • You can find the answer here - askubuntu.com/a/687127/380774 Nov 27, 2016 at 18:46

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