Solved Unable to connect Wifi at 5Ghz

B

balanga

I have two laptops, ThinkPad X1 Carbon (using 'Centrino Advanced-N 6205 [Taylor Peak]') and ThinkPad X220 (using 'Centrino Ultimate-N 6300') both of which are able to connect to my Wifi router using the 5GHz frequency on Windows but not on FreeBSD. On FreeBSD using ifconfig wlan0 up scan does not seem to detect to detect the 5GHz band. Both work fine on 2.4GHz.

Can anyone think why that might be?
 
I too have a ThinkPad X1 Carbon (6th gen), which was running FreeBSD 12.0-RELEASE. Currently it is running void linux but I'm planning to switch back to FreeBSD. Nevertheless I was able to connect at 5Ghz. I had this in my rc.conf:
Code: 
ifconfig_wlan0="country DE regdomain ETSI mode 11a powersave DHCP WPA"

Maybe the explicit mention of country and regdomain may help.
 
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