Ubuntu – WiFi asks for password again and again

iwlwifinetworkingpasswordwireless

The Problem

  • My WiFi network disconnects itself randomly and starts asking for password.
  • The password is already stored, I just have to click on connect.
  • When I click on connect, it remains connected for some time then again disconnects and sometimes it even does not connects.
  • The speed while being connected is very low and torrents are not downloading.
  • When I sometimes connect to WiFi I get System encountered a error dialogue box

What did I do

  • I go to Edit connections and make sure that All users can connect is ticked.
  • I also deleted config file of connection from /etc/NetworkManager/system-conncections

I still can't connect to WiFi sometimes and it disconnects automatically if I'm ablee to get connected after some time. So what should I do?

After googling I found that this problem has been encountered in earlier versions, I'm using Ubuntu 16.04 so if there is a permanent solution which can help everyone that will be the best.

P.S.- I have already tried these links:

Also the WiFi network works fine with my mobile.If more information is needed than let me know and how I can find it.

Also after seeing this I have a hardware detection problem, what logs do I need to look into? i found that no card was soft or hard blocked and rest info I found after using commands are on http://paste.ubuntu.com/19615988/

Output of lspci -knn | grep Net -A2

02:00.0 Network controller [0280]: Intel Corporation Centrino
Wireless-N 130 [8086:0896] (rev 34)
Subsystem: Intel Corporation
Centrino Wireless-N 130 BGN [8086:5005] Kernel driver in use: iwlwifi

New Update: I can't connect to my WiFi network, I have to use USB tethering in mobile to use internet on my laptop.

Best Answer

These adapters do not support 802.11n protocol well (at least on linux), but iwlwifi driver tries to use it. You can disable this protocol by running in terminal

sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "options iwlwifi 11n_disable=1"

This will be applied after a reboot.

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