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I am a new user of Ubuntu. I install ubuntu 16.04 in my acer swift 3. I am connected to the wifi from my router. But sometimes i can not access Internet. It says no internet connection but the wifi is connected when i try to access any website But sometime i can browse internet without fixing or changing anything.

First i thought may be my internet connection problem. But other device connected in the same wifi works fine and no such kind of problem occurs.. Then i thought it's my laptop problem. But when I use windows in this laptop that problem not happen... So please help me, how can i cope with this problem?

lspci -knn | grep Net -A3 output:

02:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac 
Wireless Network Adapter [168c:003e] (rev 32)
    Subsystem: Lite-On Communications Inc QCA6174 802.11ac Wireless 
Network Adapter [11ad:0807]
    Kernel driver in use: ath10k_pci
    Kernel modules: ath10k_pci
  • Please edit your question and add output of lspci -knn | grep Net -A3 terminal command. – Pilot6 Jun 3 '17 at 10:16
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add namerser in resolve and disable ipv6

vim /etc/resolve.conf

nameserver 8.8.8.8

and

I think you may be suffering from a couple different issues. I want you to reinstall the Ubuntu package linux-firmware as that may be more up to date than kvallo's github site

sudo apt-get install --reinstall linux-firmware

A recent change to network manager enables wifi powersave by default, to disable this do

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

reboot

0

Your problems are occurring due to Ubuntu having a conflict with Acer firmware. To resolve this, install using an Ubuntu ISO with a new mainline kernel, or install Ubuntu with acpi=off, boot it with acpi=off, install a mainline kernel, and boot normally without acpi=off.

For more details, see my answer -> Ubuntu 16.10 Acer Swift-3 multiple problems

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