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Re: Upgrade from Mint 18.3 to 21.1 breaks WiFi (Atheros AR93xx Network Adapter)

Thanks for the responses, much appreciated. Also, apologies for delay, I was away.

Strangely, I've now lost the 5GHz network; it's not showing in WiFi settings after restarting the router but I can still use the 2.4Ghz network (which I really don't want to as it sometimes has other connection issues). Any idea how I can scan and check for other available networks? I assume they should just be visible in the WiFi network menu? I ideally want to set a static ip address on the 5GHz network and use this netw...
Thanks for the responses, much appreciated. Also, apologies for delay, I was away.

Strangely, I've now lost the 5GHz network; it's not showing in WiFi settings after restarting the router but I can still use the 2.4Ghz network (which I really don't want to as it sometimes has other connection issues). Any idea how I can scan and check for other available networks? I assume they should just be visible in the WiFi network menu? I ideally want to set a static ip address on the 5GHz network and use this netw...