Ubuntu 16.04 fresh install, won't connect to WiFi

[dozycat]

I got the same problem, I already did the:

echo "options ath9k nohwcrypt=1" | sudo tee /etc/modprobe.d/ath9k.conf


no change.

This machine was working with 12.04 before, the wireless works however the connection is very slow.

I am including the output wireless-info.txt

[jeremy31]

I would put the wifi router on channel 6 for now as it is vacant

Set the country codes with

sudo iw reg set CO
sudo sed -i 's/^REG.*=$/&CO/' /etc/default/crda

Go into Network Manager and change IPv6 to ignore

Reboot

[dozycat]

I would put the wifi router on channel 6 for now as it is vacant

Set the country codes with

sudo iw reg set CO
sudo sed -i 's/^REG.*=$/&CO/' /etc/default/crda

Go into Network Manager and change IPv6 to ignore

Reboot

no change, the wireless connects however the speed of connection jumps from 39 mbps to 1 mbps.
The pc is dual windowx xp and xubuntu 16.04, and in windows xp the speed is of 130 mbps.