Dell XPS 13 9360 : Ubuntu Wifi disconnection

xps13.md

I encounter wifi disonnection problem on a Dell XPS 13 9360. Here is the solution I used to fix this bad behavior.

Which wifi card version is installed ?

lspci | grep -i net

3a:00.0 Network controller: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)

Here, we have the QCA6174 model.

Retrieve last driver version on :

https://github.com/kvalo/ath10k-firmware

Replace wifi firmware firmware-6.bin

cd /lib/firmware/ath10k/QCA6174/hw3.0
sudo cp firmware-6.bin firmware-6.bin.backup
sudo cp <downloaded_file> firmware-6.bin

Update path using your wifi card model : /lib/firmware/ath10k/<wifi_card_model>/hw3.0

Reload drivers

sudo modprobe -r ath10k_pci ath10k_core
sudo modprobe ath10k_pci
sudo modprobe ath10k_core

In /home/mrouquet/Téléchargements/ath10k-firmware-master/QCA6174/hw3.0/4.4.1, there is a lot of .bin. which should I use ?

Thank you @Samffy.
Ubuntu 20.04.3 LTS and Dell XPS 13 9360 also ran into this issue. I didn't know what .bin file to delete so I tested a few combinations. The following .bin files fixed my wifi:

• download the QCA6174 directory from kvalo
• keep 2.1 entirely
• keep 3.0/board-2.bin
• keep 3.0/4.4.1's latest firmware file. as of 10 Decembre 2021, it is the October 1 file.
• rename 2.1's firmware file to firmware-5.bin, rename 3.0's firmware file to firmware-6.bin. you can move firmware-6.bin to 3.0
• put the QCA6174 directory in /lib/firmware/ath10k.
• do the sudo modprobe stuff above