Drunk Cat <[email protected]> writes:
> problem: it does not connect to any wifi network you can see the time out on 
> dmesg
>
>
>>lsusb
>
> Bus 002 Device 007: ID 0bda:817f Realtek Semiconductor Corp. RTL8188RU 
> 802.11n WLAN Adapter
>
>>iwconfig
> wlp0s20u1  IEEE 802.11bgn  ESSID:off/any  
>           Mode:Managed  Access Point: Not-Associated   Tx-Power=20 dBm   
>           Retry short limit:7   RTS thr=2347 B   Fragment thr:off
>           Power Management:off
>>dmesg

Not sure what distribution you are running, but I am seeing problems
with NetworkManager in recent Fedora.

Could you try the following:
1) Unplug the WiFi dongle
2) (Re)load the driver (rmmod rtl8xxxu ; insmod rtl8xxxu)
3) Restart NetworkManager 'systemctl restart NetworkManager'
4) Plug in the WiFi dongle

Thanks,
Jes
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