Qualcomm Atheros weak Wifi signal on Ubuntu 18.04

Solution 1:

Suggest, after you do

sudo modprobe -rv ath10k_pci   

to try

sudo modprobe -v ath10k_pci ant_sel=2

as it might be an RF issue which Windows resolved by using antenna #2.

Solution 2:

Run in terminal

sudo tee /etc/modprobe.d/rtl8723be.conf <<< "options rtl8723be ant_sel=2"

This will create a config file to make the setting permanent. Then restart.

Solution 3:

For all other Qualcomm cards...

check this command lspci | grep 'Network'

if output comes as

02:00.0 Network controller: Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter (rev 31)

Then this solution may work for you

sudo apt-get update
sudo apt-get install linux-headers-generic build-essential
wget https://www.kernel.org/pub/linux/kernel/projects/backports/2015/11/20/backports-20151120.tar.gz
tar -zxvf backports-20151120.tar.gz
cd backports-20151120
make defconfig-ath10k
make
sudo make install

ignore if you get any errors or warnings for make

Solution 4:

This solution given by Manas worked for me with some minor tweak.

Before executing the wget command check for you linux kernel version.

$ uname -r

Then go to https://mirrors.edge.kernel.org/pub/linux/kernel/projects/backports/stable/ and check for the closest kernel version available there and then download the backports tar file using the following command.

$ wget https://kernel.org/pub/linux/kernel/projects/backports/stable/v5.1.16/backports-5.1.16-1.tar.gz

Here 5.1.16 is the linux kernel version.

Then run these. After successful installation of these three commands reboot.

$ make defconfig-ath10k
$ make
$ sudo make install

Reboot.