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0e1f616
(Get the code!)
Ok Folks,
I've been struggling with this as well and I can provide some information and help.
BACKGROUND:
First of all, there are at least four versions of the Broadcom BCM43602 SoC which is supported by the brcmfmac driver:
Source: https:/
BCM43602 14e4:43ba Supported in 3.17+
BCM43602 14e4:43bb Supported in 3.19+, 2 GHz device
BCM43602 14e4:43bc Supported in 3.19+, 5 GHz device
BCM43602 14e4:aa52 Supported in 4.2+, “raw” device
You need to run lscpi -nn to determine which one you have installed. I happen to have the first one which ends on 43ba.
For a long period of time I was not able to get 5Ghz running on my wifi. Running on 2.4Ghz Wifi was fine but the speeds were limited.
SOLUTION:
As it turns out, if you have ANY bluetooth device connected to your laptop, the chip will reserve the 5GHz spectrum and your WiFi will only work on 2.4Ghz. Weird. I know... My advise to you is to remove ALL bluetooth devices completely from your Bluetooth manager. I am not talking just turning off your bluetooth devices. I am talking about complete unpairing them from your laptop. In my case, I had a bluetooth mouse. I unpaired it from my laptop and immediately, my WiFi switched to 5Ghz!
Hope this helps anyone who is struggling with those chips.