Any idea whats the difference between the 2 types of signal icons?
Usually I get the style on the top, but sometimes I see the one on the bottom. Have no clue what triggers one type instead of another
Disable your alternate wireless connections which are not active under the adapter settings. (i.e. bluetooth or other wireless connections which you are not using). I am not sure what the grey is supposed to indicate, but this alleviated the problem for me.