t am an endeavour-os user on mate-desktop. Just now I installed a fresh March-2003 EOS Cassini_Nova on a desktop machine. I installed the ‘Onlline’ install after booting from the live USB. Yad worked all right. I rebooted into the system and it is showing ‘No Connection Found’. And it is sharing another lan from the same router through which I connected the PC. During installation I made the connection ‘manual’ and assigned the IP 192.168.0.3 with the router as 192.168.0,1. This laptop is connected the same way with the manual IP 192.168.0.5 and it is working fine as I am reporting it.
And Dear Friends: I am in major calamity now: I have taken four days leave from the college to generate some material for my students. Already about fifteen hours are gone. I need the desktop immediately. Help my job and me. 
Dipankar Das, Kolkata