Sometimes the laptop external display do not display anything and i have to blindly type the passwd and then it works again

Unfortunately i have not found any patterns so i can tell how to repeat this, but sometimes when the signal to external monitor is interrupted, the XFCE/Linux does not resume the display unless i blindly type the unlock password and then in a few seconds the external display start displaying.
This is latest (pacman -Syu) 5.8.18-1-MANJARO + XFCE 4.14
I have already shown some display related details/logs in my other topic XFCE, external display stopped displaying, only laptop default one works

My idea was some setting similar to Raspberry Pi to force HDMI output even it does not detect the device.