Hi all,
Log: http://ix.io/24qp
Upon attempting a connection with my WiFi SSID: Skynet, my RPI4 returns an error (Input/output error). I have looked around on the forum and was only able to find this persons post: WiFi "input/output error" unfortunately unresolved.
Any ideas what could be the cause? 
Thanks,
Revers3
Hi. I had the same problem. First problem was, my keyboard was set ti the wrong layout, and so i typed the wrong phrase (password). Then I figured out that as long as my thumb drive was in a USB3 port, no wifi was working at all. I switched it to an USB2.0 and niw everything works fine.I tried this niw with two different drives and had the same result. Hope this helps. (This is of course with a raspberry pi 4.)
That seemed to do the trick. No clue why.. but great! thanks.
