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I've been trying to configure Grub to give a hidden 3 second countdown, and then boot into the default option.
What appears to happen is that Grub will alternate randomly between doing just that, and showing the menu with a 25 second countdown.
This happens both on full reboot, and on restore from hibernate. I have not been able to establish any pattern which will predict when it happens. Sometimes it gives one config 2 or 3 times in a row, sometimes it switches.
How can I make it consistent?
Ubuntu Desktop 18.04
GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=3 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT_STYLE=countdown GRUB_TIMEOUT=3 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` #GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nouveau.modeset=0" GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/nvme0n1p3" #GRUB_CMDLINE_LINUX_DEFAULT="text" #GRUB_CMDLINE_LINUX_DEFAULT="" GRUB_CMDLINE_LINUX="" GRUB_INIT_TUNE="480 440 1"
I have also used