Comment 78 for bug 1520343

[ 2.508141] ath10k_pci 0000:09:00.0: Direct firmware load for ath10k/cal-pci-0000:09:00.0.bin failed with error -2
[ 2.508370] ath10k_pci 0000:09:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
[ 2.508371] ath10k_pci 0000:09:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2

Ubuntu 16.04.1 and Ubuntu 16.10 (Both 64-bit)
Linux Firmware tested was linux-firmware_1.157_all & linux-firmware_1.161_all

Note that the Wireless card does connect to 2.4Ghz and 5Ghz BUT it fails to load randomly or simply drops connection every so often.

The dropping of connection happens once every week or two, but the randomly loading is about 1 in 5 every time I reboot or cold boot.

The motherboard is the Asus Alpha Hero:
https://www.asus.com/us/Motherboards/ROG-MAXIMUS-VIII-HERO-ALPHA/

The PCI Information is:

09:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)