1

Dell XPS 13 (7th gen i5), dual booting Ubuntu 16.04 and Windows 10.

Wifi works fine in Windows but in Ubuntu it gets disconnected every 5-10 minutes. The wifi icons on the top bar still appears to be connected. I have to manually click disconnect and connect again for wifi to work.

Tried a solution from 16.04 LTS wifi connection lost randomly every 5 minutes.

Did the following steps:

  1. Got details of my PCI wireless card by running sudo lshw -class network
  2. Took the code on the line that says 802.11ac Wireless Network Adapter: QCA6174
  3. Entered this into the terminal sudoedit /etc/pm/config.d/config
  4. I was then prompted to a page within the terminal which says GNU nano 2.5.3 File: /var/tmp/config.XXibmEDm. Then I entered SUSPEND_MODULES="QCA6174" and I hit ctrl-X to save.
  5. Was prompted to say if I want to save modified buffer: i hit Y
  6. Was prompted file name to write: /var/tmp/config.XXibmEDm. I am stuck here, not sure which action to take. The options given were: Get help/Cancel/DOS format/Mac format/Append/Prepend/Backup file/to files
Zanna
  • 69,223
  • 56
  • 216
  • 327
Jen
  • 21
  • 1
  • 3
  • try to check this post https://askubuntu.com/questions/529347/how-do-i-keep-my-wifi-from-dropping-out –  Jan 22 '17 at 08:59

2 Answers2

0

If you check terminal results for iwconfig I think you will find that power management is on and that is likely causing your issues. You can disable power management with 

sudo sed -i 's/wifi.powersave = 3/wifi.powersave = 2/' /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf

Reboot

Jeremy31
  • 12,262
  • 9
  • 57
  • 113
  • 1
    Hi Jeremy, thanks! i just tried the above, managed to turn off power management but wifi still dropped after 5mins. Any idea what else could have gone wrong? – Jen Jan 22 '17 at 14:58
  • Check `iwlist scan | egrep -i 'ssid|cipher'` If your connection is using TKIP it may cause disconnects – Jeremy31 Jan 22 '17 at 15:01
-1

I had a very similar problem, turning off power management solved the issue for me. After logging into your wifi, turn off your power management. I use (sudo iwconfig wlp4s5 power off) currently I have to do this every time I log in, but works like a charm, no more dropped wifi connections.

Note: use iwconfig to get your wireless cards "wl" identifier, yours will most likely not be the same as mine. Hope this helps.

Tristan
  • 1
  • 1