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I have a brand new Hp 15 r215nt notebook. I have just installed 14.04 LTS. I noticed that wireless connection drops after sometime and needs a startup. (Disconnect/Connect wifi doesn't help) If I connect powercord I don't have this problem. Is there any solution?

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
    Aug 24, 2015 at 18:26
  • Power cord or LAN cable?
    – TheWanderer
    Aug 24, 2015 at 18:47
  • @Zacharee1 Power cord!.
    – K.Akagul
    Aug 26, 2015 at 9:26
  • @Pilot 6 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
    – K.Akagul
    Aug 26, 2015 at 9:55
  • 2
    possible duplicate of Realtek 8723BE Wifi problem
    – Pilot6
    Aug 26, 2015 at 10:18

2 Answers 2

Reset to default
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Run this command and reboot:

echo "options rtl8723be fwlps=N ips=N" | sudo tee /etc/modprobe.d/rtl8723be.conf

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If Power Management is on, your wifi card will stop working after some time to save power especially when power cord not plugged in. So check whether Power Management is on using iwconfig

for restarting wifi use sudo service network-manager restart

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