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My wifi connection doesnt work properly; it stays connected only for around 5 minutes after I turn on the PC. I'm using Ubuntu 16.04.

I've tried 

sudo service network-manager restart

which makes no difference

Same with 

killall nm-applet && nm-applet &

After that I tried 

sudo gedit /etc/pm/config.d/config

where I insert this string

SUSPEND_MODULES = "drivername logicalchipname"

But since I don't have permission to modify that file I tried to use chmod on it, which led to A problem that was solved but left me still in the same situation.

$ lspci -knn | grep Net -A3; rfkill list
03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd.
RTL8821AE 802.11ac PCIe Wireless Network Adapter [10ec:8821]
Subsystem: XAVi Technologies Corp. RTL8821AE 802.11ac PCIe Wireless Network Adapter [1b9a:2482]
 Kernel driver in use: rtl8821ae
 Kernel modules: rtl8821ae

0: hci0: Bluetooth  Soft blocked: yes   Hard blocked: no
1: phy0: Wireless LAN   Soft blocked: no    Hard blocked: no

What do you suggest I do?

Zanna
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Zeno Raiser
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  • https://askubuntu.com/questions/939477/ubuntu-16-04-lts-lost-administrator-rights-bash-etc-profile-permission-denied#comment1490504_939477 –  Jul 25 '17 at 21:52
  • Please [edit] your question and add output of `lspci -knn | grep Net -A3; rfkill list` terminal command. – Pilot6 Jul 25 '17 at 22:00
  • Edited and output added – Zeno Raiser Jul 25 '17 at 22:43
  • Any suggestion? – Zeno Raiser Jul 26 '17 at 06:31
  • Same problem as [Wireless disconnect issues Ubuntu 16.04 with RTL8821ae](//askubuntu.com/q/797213) but I don't think this question has a working answer – Zanna Jul 26 '17 at 07:13
  • So do you think Is an hardware problem?? In the case i still have assiciration – Zeno Raiser Jul 26 '17 at 07:29
  • Sorry rinzwind i didnt see your post, i've already tried what you said and it doesnt work – Zeno Raiser Jul 26 '17 at 07:32
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    This seems a method: https://gauravssnl.wordpress.com/2017/06/18/how-to-fix-realtek-rtl8723be-wireless-network-adapter-low-wi-fi-signal-issue-on-ubuntulinux-os/ Change the "rtl8723be" for your "rtl8821ae". it also describes the same problems you list. – Rinzwind Jul 26 '17 at 07:35
  • Thanks @Rinzwind finally i solved this issue!! Otherwise i've should reinstall again Ubuntu and It Will be the third time... Thanks thanks thanks – Zeno Raiser Jul 26 '17 at 22:42

1 Answers1

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if wifi quits working again execute the commands given again (you must do this everytime there is a kernel update)

Thanks to @Rinzwind I've found a way to solve the problem, just follow this guide:

  1. Download rtlwifi_new from here on GitHub and extract it to Desktop (or to your desired folder).

  2. Open Terminal and change your directory to the folder where you extracted rtlwifi_new zip file (here , Desktop/rtlwifi_new-master) by using the cd command, eg

    cd Desktop/rtlwifi_new-master

  3. Now, run these commands in Terminal:

    make clean 
make 
sudo make install

  4. If everything is alright, you will see the message Install rtlwifi SUCCESS. It means that rtlwifi has beeen installed successfully.

  5. Now, run this command:

    sudo modprobe rtl8723be

  6. Amd run this command:

    echo “options rtl8723be ant_sel=2” | sudo tee /etc/modprobe.d/rtl8723be.conf

Then reboot and choose your wifi network to connect.

Zeno Raiser
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