Hi I have a Dual boot windows 11 and Ubuntu studio when I power on I get the Grub menu and can select Windows or ubuntu however when I restart the grub does not show its active as I can select the delay to 2 minuts and that is how long it take to get to the login screen, this is perculiar to Studio as I have install several Ubuntu distros recently and all show the Grub screen on reboot. I have installed Studio twice and it still happens
Please post your /etc/default/grub here.
Also check Bios or Uefi settings for something called Quick or Fast boot.
If Enabled try to disable it.
See this thread https://askubuntu.com/questions/1319810/ubuntu-20-04lts-grub-os-selection-menu-shows-up-on-restart-but-not-on-power-on as well.
And please use some commas if you can. This post is difficult to read.
Thanks Andriyshel
It was all down to the Plymouth grub.
I just delete quite splash and is well.