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I have a dual booted system with Windows 10 and Ubuntu 18.04 LTS. I can easily connect to my home WiFi with Windows but with Ubuntu I get the following error:

Activation of network connection failed.

My home WiFi is protected with mac filter and I have added the mac address of my pc.

I tried solution of this post with no luck.

One thing I noticed when I turn off my WiFi in ubuntu the system turns on Flight mode automatically and when I turn off Flight mode bluetooth gets turned on.

I know I didn't post much info the reason being I am new to ubuntu so don't know what else to include please help.

Edit:

As requested in comments (command: lspci -knn | grep Network -A3):

03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8723BE PCIe Wireless Network Adapter [10ec:b723]
    Subsystem: Hewlett-Packard Company RTL8723BE PCIe Wireless Network Adapter [103c:81c1]
    Kernel driver in use: rtl8723be
    Kernel modules: rtl8723be

command: sudo modprobe -r rtl8723be && sudo modprobe rtl8723be print nothing

and command rfkill list prints following:

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

tried second time and got this as output:

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

note that I can connect to my mobile internet through hotspot without any problem.

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  • Open a terminal and type lspci -knn | grep Network -A3 then edit your question above and copy&paste the result in there. Aug 29, 2020 at 11:10
  • edited my question with your requested command plus add some more info check it out
    – Ahtisham
    Aug 29, 2020 at 11:26
  • @darth_epoxy do you need anything else ?
    – Ahtisham
    Aug 29, 2020 at 11:49
  • After a reboot, immediately open a terminal and type sudo modprobe -r rtl8723be && sudo modprobe rtl8723be and it that doesn't fire up then post the result of rfkill list for us. Aug 29, 2020 at 11:52
  • edited see the output
    – Ahtisham
    Aug 29, 2020 at 13:06

1 Answer 1

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You would need to go over router settings and then match Ubuntu network settings with them.

You can also try using BSSID to connect instead of network name. more here: https://help.ubuntu.com/stable/ubuntu-help/net-wireless-hidden.html.en

I am note sure what is the benefit of hiding the network. See also the note in official documentation in the link i posted.

Can you connect to any other wi-fi network? That way at least you would know that wi-fi driver is not the issue. though based on bluetooth/flight mode behaviour i would say something is off.

newer version of Ubuntu would bring in new kernel that might have this driver built in or a newer tested version of driver (i am assuming here you had to patch 18.04 kernel to get the chip working.). but if you use 18.04 HWE stack you will get new kernel that was ported to 18.04. you can read more about HWE here: https://wiki.ubuntu.com/Kernel/LTSEnablementStack

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