Having a problem I have not yet experienced. I made a fresh install of 17.04 and now I have noticed my link to internet goes down and then back up randomly. Have noticed when I download some files via torrent, after a while speed drops down to 0 and then goes up again. THe wifi signal shows good connection but still the link goes down. When network is down I cant access webpages or anything. If I wait 1-3 minutes everything comes back again, and after a while goes down again....arrg..

How to troubleshoot where problem is?

::::::::UPDATE::::::::: OUTPUT OF lspci -knn | grep Net -A3; rfkill list

03:00.0 Network controller [0280]: Intel Corporation Centrino Wireless-N 1000 [Condor Peak] [8086:0084]
    Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN [8086:1315]
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi
0: tpacpi_bluetooth_sw: Bluetooth
    Soft blocked: yes
    Hard blocked: no
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  • Please edit your question and add output of lspci -knn | grep Net -A3; rfkill list terminal command. – Pilot6 Oct 2 '17 at 21:59
  • Having other laptops and computers working perfect but this one has worked flawlessly until i installed 17.04. Now it gives me gray hair. – Mastah Brood Oct 2 '17 at 22:10
  • Guess I am the only one having issues =( Wifi signal is strong and I am connected to the network. Using Http sometimes takes ages to load pages and sometimes it times out. TSL handshake can take a LONG while. Torrent speed goes up to 1,5Mbit/sec to drop down to 0, and then back and forward. Streaming music via RythmBox same problem. Using sudo apt-get update works when line is up, but when down it times out and I get error message. – Mastah Brood Oct 4 '17 at 11:31

Run in a terminal

sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "options iwlwifi 11n_disable=8"

and reboot.

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