QCA6174 doesn't connect to WIFI below standard ac in all distributions except Ubuntu

Support Network
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1

Hello!
I use Manjaro as home distribution. I have 2 Wifi networks, one works on standard ac, other works on standard n.
My network controller is

Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter (rev 32)

I can connect to first WIFI (that works on standard ac) network using any OS: Windows, Manjaro, Kali, Ubuntu.
But for some reasons I can’t connect to WIFI that works on standard n using all Linux distributions except Ubuntu (18.04 if it matters). It asks for a password again and again and never connects.
I tried to install latest ath10k-firmware version and replace files QCA6174 to /lib/firmware/atk10k, but it didn’t help.
Hope for your help!
Thanks in advance!

2

Try setting the regulatory domain and see if it helps. It did for me with my Atheros QCA9377 awhile back when I was having issues with it.

3

Unfortunately, it didn’t help. By the way, wifi with standard n works on channel 9, which is included in all of domains.