[SOLVED] WiFi very slow on Ubuntu 20.04 ?

rakinar2

Commendable
Oct 26, 2021
95
7
1,545
I have a DELL Optiplex 7080 with windows 10 and ubuntu 20.04 lts dual boot. Windows wifi is very fast as expected but ubuntu wifi is very slow (20kb/s). Also if I disconnect wifi then it fails to connect again and fails until I remove and re-insert the wifi adapter. I am using tp link tl-wn823n adapter. How to fix this error?