Comment 34 for bug 1520343

Hi Dennis,

Thank you so very much. On my new Acer R5-471T-52EE, your solution fixed the WiFI problem!!!

I have Ubuntu 14.04.3 LTS, I upgraded kernel to "4.2.0-21-generic" and then followed your solution exactly. The dmesg also showed me the following messages

[ 1.682634] ath10k_pci 0000:01:00.0: pci irq msi-x interrupts 8 irq_mode 0 reset_mode 0
[ 1.894480] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/cal-pci-0000:01:00.0.bin failed with error -2
[ 1.898086] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/board-pci-168c:003e:11ad:0807.bin failed with error -2
[ 1.898092] ath10k_pci 0000:01:00.0: failed to load spec board file, falling back to generic: -2
[ 1.898776] ath10k_pci 0000:01:00.0: Direct firmware load for ath10k/QCA6174/hw3.0/firmware-5.bin failed with error -2
[ 1.898780] ath10k_pci 0000:01:00.0: could not fetch firmware file 'ath10k/QCA6174/hw3.0/firmware-5.bin': -2

[ 4.032110] ath10k_pci 0000:01:00.0: qca6174 hw3.2 (0x05030000, 0x00340aff, 168c:003e:11ad:0807 fallback) fw WLAN.RM.2.0-00180-QCARMSWPZ-1 api 4 htt 3.26 wmi 4 cal otp max_sta 32
[ 4.032114] ath10k_pci 0000:01:00.0: debug 0 debugfs 1 tracing 1 dfs 0 testmode 0

Despite failure to find file "firmware-5.bin" I was able to get wifi properly for the first time on my ubuntu.

Thank you again
-Sid