Use di_info_get_serial to fetch the serial number from EDID
This will also look at the "product serial string" in addition to the actual serial number. The former is what we use elsewhere in Plasma like the kscreen kcm. BUG:485015 FIXED-IN:6.1
This will also look at the "product serial string" in addition to the actual serial number. The former is what we use elsewhere in Plasma like the kscreen kcm. BUG:485015 FIXED-IN:6.1