Dell Optiplex 5090MT i7-10700 (내장그래픽) 모델
Ubuntu 18.04 설치시 아래를 따라했으나
https://www.dell.com/community/Optiplex-Desktops/Dual-boot-windows-and-Ubuntu-on-optiplex-5090/td-p/8040726
Black screen만 나옴.
20.04 설치로 해결 !
https://askubuntu.com/a/1341267