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I am running Ubuntu 18.04 on a AMD Ryzen system. I bought a PCIe Wifi Card, with the chipset "Qualcomm Atheros AT938x" (as I saw from windows device manager). The wifi card works flawlessly on windows, but on Ubuntu, I get these bunch of errors. I have already tried update and upgrade repo list and add to modules list.

lspci -v

04:00.0 Ethernet controller: Qualcomm Atheros Device abcd (rev 01)
    Flags: fast devsel, IRQ 10
    Memory at f7500000 (64-bit, non-prefetchable) [disabled] [size=128K]
    Expansion ROM at f7520000 [disabled] [size=64K]
    Capabilities: <access denied>

sudo lshw -C network

*-network UNCLAIMED
   description: Ethernet controller
   product: Qualcomm Atheros
   vendor: Qualcomm Atheros
   physical id: 0
   bus info: pci@0000:04:00.0
   version: 01
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress cap_list
   configuration: latency=0
   resources: memory:f7500000-f751ffff memory:f7520000-f752ffff

I have updated the BIOS to the latest version, and I even updated my kernel to the latest point update.

uname -a

Linux WS 4.15.18-041518-generic #201804190330 SMP Thu Apr 19 07:34:21 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

I even added a line in the conf file if it helps, but it does not. cat /etc/modprobe.d/ath10k_core.conf

options ath10k_core skip_otp=y

cat /etc/NetworkManager/NetworkManager.conf

[main]
plugins=ifupdown,keyfile

[ifupdown]
managed=false

[device]
wifi.scan-rand-mac-address=no

cat /etc/modules

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.

ath9k
ath5k
ath9k_pci

How do I make the wifi device work?

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