When I first installed Qubes OS, I wasn’t able to get the WiFi working as mentioned here
In the meantime, I was able to use USB tethering, which works well enough. However, I would like to solve my WiFi issue once and for all. So I’m resuming troubleshooting from this point in the thread
Going by the below output, it would seem that I have the required firmware as per this link except that for some reason it wasn’t extracted 
[user@sys-net ~]$ ls -l /lib/firmware/ath11k/WCN6855/hw2.0/
total 1780
lrwxrwxrwx. 1 root root 33 Dec 10 03:00 Notice.txt.xz -> ../../QCA2066/hw2.1/Notice.txt.xz
-rw-r--r--. 1 root root 1670360 Dec 10 03:00 amss.bin.xz
-rw-r--r--. 1 root root 39836 Dec 10 03:00 board-2.bin.xz
-rw-r--r--. 1 root root 105948 Dec 10 03:00 m3.bin.xz
-rw-r--r--. 1 root root 2132 Dec 10 03:00 regdb.bin.xz
[user@sys-net ~]$ ls -l /lib/firmware/ath11k/WCN6855/hw2.1
total 0
lrwxrwxrwx. 1 root root 20 Dec 10 03:00 amss.bin.xz -> ../hw2.0/amss.bin.xz
lrwxrwxrwx. 1 root root 23 Dec 10 03:00 board-2.bin.xz -> ../hw2.0/board-2.bin.xz
lrwxrwxrwx. 1 root root 18 Dec 10 03:00 m3.bin.xz -> ../hw2.0/m3.bin.xz
lrwxrwxrwx. 1 root root 21 Dec 10 03:00 regdb.bin.xz -> ../hw2.0/regdb.bin.xz
Should I attempt to extract the files?
Relevant logs in sudo journalctl:
Jan 21 06:36:12 sys-net kernel: ath11k_pci 0000:00:07.0: failed to setup link desc: -12
Jan 21 06:36:12 sys-net kernel: ath11k_pci 0000:00:07.0: failed to init DP: -12
Jan 21 06:36:12 sys-net kernel: ath11k_pci 0000:00:07.0: ignore reset dev flags 0x0
Jan 21 06:36:12 sys-net kernel: ath11k_pci 0000:00:07.0: ignore reset dev flags 0x0
Jan 21 06:36:22 sys-net kernel: ath11k_pci 0000:00:07.0: failed to wait wlan mode request (mode 4): -110
Jan 21 06:36:22 sys-net kernel: ath11k_pci 0000:00:07.0: qmi failed to send wlan mode off: -110