I'm running Ubuntu MATE 20.04, I installed various software packages along with running updates, and when I restarted my system the first thing that comes up (after POST) is the Gnu-Grub screen, which shows me different options. It defaults correctly to ubuntu, so if I do nothing MATE does start, but this screen didn't come up before.
So, why is it now?
Is there any way of getting rid of it?
If I can't, can I set the timer on it so it starts up into MATE faster than what it is?