boot – Why must i restart my tv, to display ubuntu home screen. After bios and splash screens load. TV lingers Black until TV is Power cycled


Why must I restart my Tv, to display Ubuntu home screen. After bios and splash screens load. TV lingers Black until TV is Power cycled.
Dual-booting/ Ubuntu 20.04.1 LTS / Windows 10. P resist either way reboot, fresh start, before 20.04.1 update, also in ubuntu 18 too…With AMD® Redwood Graphics.