Wireless / WiFi problem after using Linux Distro (QCA9565 / AR9565)

[sereneduck]

Hi there,

I've recently switched from using Windows to ZorinOS because I wanted to try a new OS, and Windows was getting too laggy for my taste.

However, I've noticed that my wireless connection specifically is not great.
Things that it does:

1. Showing 'server not found' when visiting website
   

   

2. Having 'stutter' when pinging google.com (sudden jump to 1500ms)
   

   

3. Showing 'Temporary failure in name resolution' when trying to ping google.com
   

   

4. Website would load, but then if I try to open the link inside or some new site, it wouldn't load again (showing server not found)

My Device: ASUS GL552-JX
Processor : Intel Core i7 - 4750HQ
OS Version : Zorin OS 17.2 Core (64 bit)

I thought it was my network having issue at first, however my PC doesn't have the same problem.

Things that I've tried:

1. Turning off IPv6
2. Disabled WiFi power management
   /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
wifi.powersave = 2
3. nohwrcypt trick
   cat /etc/modprobe.d/ath9k.conf
options ath9k nohwcrypt = 1
4. adding DNS server through the GUI (ipv4 wifi thing)
5. Updating the OS and software (using software updater)
6. Restarting many times
7. Reinstall ZorinOS

Additional information

1. I've tried using Linux Mint, the problem is still there.
2. sudo lshw -c network
   
   
3. Ethernet works perfectly fine
4. rfkill list all
   
   
5. lsmod | grep ath9k
   
   

If there's any additional information needed, please tell me. Thanks!

[Ponce-De-Leon]

Welcome to the Forum!

Did You take a Look in the ''Additional Drivers'' Tab in Software & Updates if there is a Driver offered for Your Wifi?

[sereneduck]

I've looked at the "Additional Drivers" tab, but the only additional drivers are ones for NVIDIA

[Aravisian]

Have you tried using 2.4 gigahertz rather than 5 gigahertz?

Have you tried using a different kernel? As @Ponce-De-Leon suggested checking for a different driver - the Atheros driver is included in the Linux kernel.
If this was me, I would try

sudo apt install linux-generic-hwe-22.04

And then testing different kernel versions.

You can also use modprobe to check different modules (I am going by your screenshot):

sudo modprobe -r ath9k

sudo modprobe ath10k_pci

[applecheeks37]

This forum post by another seems to reference an issue similar to yours when the bluetooth is enabled (I don't know if you have bluetooth on at the same time, but most people just leave it on by default).
[SOLVED] Slow WiFi when bluetooth enabled / Qualcomm Atheros QCA9565 - Linux Mint Forums
Also checking what aravisian said would be good to check as well.

[zabadabadoo]

Another simple thing to try, is turn your Router OFF then ON.