After installed awesome wm, I used xrandr to change my resolution with
xrandr -s 1920x1080
but the screen seem to be at 50% of scale Tried to restart awesome wm but not working
So how do I re-scaling it to 100%
Scaling resolution to 100%
AwesomeWM does not handle screen scaling or resolution in any way. Sometime you need a magic xrandr incantation. Also make sure you set the DPI correctly and the font scale in Qt, Chome/Firefox and GTK settings. The classic value is 96.