Very slow internet connection on ubuntu 16.04

This problem was present with 14.10, 15.04, and 15.10, I simply haven't been able to fix it.

I'm using Chrome 50 as a browser. I've changed the hosts: files dns line in nsswitch.conf file, and tried other suggested fixes.

My friend with MacOS does not experience the same slowness.

Here is some Laptop info. I'm on a Dell XPS 13 with i3 processor, and I can gladly show more if needed.

02:00.0 Network controller [0280]: Intel Corporation Wireless 7260 [8086:08b1] (rev 6b)
    Subsystem: Intel Corporation Dual Band Wireless-AC 7260 [8086:c470]
    Kernel driver in use: iwlwifi
    Kernel modules: iwlwifi

Thanks in advance!

Edit: some output of sudo lshw

*-network
    description: Wireless interface
    product: Wireless 7260
    vendor: Intel Corporation
    physical id: 0
    bus info: pci@0000:02:00.0
    logical name: wlan0
    version: 6b
    serial: 5c:51:4f:7c:2a:db
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-21-generic firmware=16.242414.0 ip=192.168.0.104 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
    resources: irq:46 memory:f0400000-f0401fff

I had a similar issue with my system preferring IPv6 over IPv4. To change to preferring IPv4 over IPv6.

Open a terminal

sudo nano /etc/gai.conf

Locate #precedence ::ffff:0:0/96 100 and and remove the #.

You may have to reboot. Should notice the difference quickly

Update: In my case, my answer is not valid. The issue later returned. Dell later admitted an ongoing issue with the hardware running on Ubuntu and sent a tech to install a different Wireless card.

This resolved wireless issues for me (commands were provided by Dell Support):

sudo mkdir -p /lib/firmware/ath10k/QCA6174/hw3.0/
sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/board.bin https://github.com/FireWalkerX/ath10k-firmware/blob/7e56cbb94182a2fdab110cf5bfeded8fd1d44d30/QCA6174/hw3.0/board-2.bin?raw=true
sudo wget -O /lib/firmware/ath10k/QCA6174/hw3.0/firmware-4.bin https://github.com/FireWalkerX/ath10k-firmware/blob/7e56cbb94182a2fdab110cf5bfeded8fd1d44d30/QCA6174/hw3.0/firmware-4.bin_WLAN.RM.2.0-00180-QCARMSWPZ-1?raw=true
sudo chmod +x /lib/firmware/ath10k/QCA6174/hw3.0/*

Edit: For me, the issue was that the driver was looking for files that didn't exist. Presumably caused by running Ubuntu updates after setting up the machine.

Very slow internet connection on ubuntu 16.04

Related

Recent Posts