I believe this is intended behavior of GRUB on UEFI, and has been like
this for years:
> "During boot, the system will check the SHIFT key status. If it cannot
determine the key status, a short delay will enable the user to display
the menu by pressing the ESC key."
As "cjwatson" said on the Debian #902928, I also don't believe UEFI
allows us to easily check modifier state, as such I am not sure if any
course of action is appropriate here.
Setting this to "Incomplete" to leave time for people to propose any
action items, and downgrading severity to "Wishlist" (seems appropriate
given this was open for 15 years).
** Changed in: grub2 (Ubuntu)
Importance: High => Wishlist
** Changed in: grub2 (Ubuntu)
Status: In Progress => Incomplete
** Changed in: grub2 (Ubuntu)
Assignee: TJ (tj) => (unassigned)
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https://bugs.launchpad.net/bugs/425979
Title:
[UEFI boot only] Holding shift fails to display grub2 menu
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