I have dual boot system windows(10) & manjaro(21), also i have configured my wifi router with different ssid for both 2.4/5 ghz with decent password. Now the thing is when i try to connect my laptop from windows os for 2.4/5 ghz band it gets connect & my all device too connect to both band. 

But when i boot in manjaro(21 KDE)/Ubuntu(20.04) the problem start here on they dont connect to 2.4ghz band on the other hand they too connect to 5ghz band with same password.

Its my kindly request to all, please help me out am strugling this from last few months.

Thank you