8

I saw similar questions, but unlike stated in other questions, My WiFi does not disconnect. Only the connectivity to Internet keeps dropping.

I have tried at different location (different WiFi), the problem is same. Any time I just disconnected from Internet (WiFi shows connected to network). After I reboot it works fine. Disconnecting and connecting to WiFi again does not help.

I have other devices (phone and mac) which have no such problem, so I am sure there is nothing wrong with the WiFi router.

EDIT: As requested here is the command output:

$ lspci -knn | grep Net -A2
02:00.0 Network controller [0280]: Intel Corporation Wireless 3160 [8086:08b4] (rev 93)
    Subsystem: Intel Corporation Dual Band Wireless AC 3160 [8086:8270]
    Kernel driver in use: iwlwifi
tyknkd
  • 371
Sambhav Gore
  • 261
  • 1
    Please [edit] your question and add output of lspci -knn | grep Net -A2 terminal command. – Pilot6 Jun 11 '16 at 18:08
  • Added the output to the question as requested. – Sambhav Gore Jun 12 '16 at 14:05
  • You say: "After I reboot it works fine. ". Does that mean that after rebooting it works for as long as you need it no matter how long that is, or does it mean it works for a while and then the same thing happens again? – Stormlord Jun 12 '16 at 14:36
  • 2
    Run sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "options iwlwifi disable_11n=1" and reboot. – Pilot6 Jun 12 '16 at 15:17
  • @Stormlord It works fine for a while. Pilot6, I will try this now. Thanks. – Sambhav Gore Jun 12 '16 at 15:21
  • @Pilot6 Problem is still happening after doing this. It worked for about 50 mins after reboot. I see a slight pattern now though. The issue occurs mostly if I leave the system idle for a while (not suspended though). I have set my laptop to never sleep. – Sambhav Gore Jun 12 '16 at 16:40
  • 3
    I mistyped the command. Please do it again with this sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "options iwlwifi 11n_disable=1" You can also find my nswer with all options. You can try to pick one that helps. – Pilot6 Jun 12 '16 at 17:56
  • The problem appears to have been fixed. Yesterday it worked fine for nearly 3 hours. Could you post it as an answer I will mark as accepted. thanks. – Sambhav Gore Jun 16 '16 at 08:13
  • I am sinking with the same issue. But this solution didn't help. Can some one save me ? – vissu pepala Sep 07 '17 at 16:40

1 Answers1

6

Just so that we don't have an unsolved question which is actually solved by this comment by Pilot6

This command seems to work (it worked for me and the original poster):

sudo tee /etc/modprobe.d/iwlwifi-opt.conf <<< "options iwlwifi 11n_disable=1"
Community
  • 1
user140345
  • 113
  • I have tried this fix. But still same issue. After I executed this tee command, nothing has been changed in iwlwifi-opt.conf file. Please help me. – vissu pepala Jun 28 '17 at 16:17
  • I wasn't using my Ubuntu laptop for longer times as I was working on a different machine for almost a year now. Last few weeks I started using my Ubuntu laptop again and the problem is still there but there is no pattern. Some times it works for 3/4 hours without an issue, other times internet gets disconnected almost immediately after booting up. So the problem is not solved for me still. – Sambhav Gore Oct 09 '17 at 18:42