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I upgraded to Ubuntu 20.04 and after the laptop battery died while in Windows, Ubuntu could not load at all. I ran boot-repair and now it goes in Ubuntu without showing the GRUB menu. I read the help for the simple config and tried several options that should fix the problem, but no luck. Uncommenting the style=menu does nothing.

My GRUB is:

GRUB_DEFAULT=0
##GRUB_TIMEOUT_STYLE=menu
GRUB_TIMEOUT=10
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash resume=/dev/disk/by-uuid/30a0ce15-7a08-48a2-ac6b-ba73822c05c2"
GRUB_CMDLINE_LINUX=""

the output from boot-repair is at bootinfo

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    To "always" stop at the menu; Hit ESC once just after the BIOS displays clears.
    – Hannu
    Commented Dec 22, 2020 at 20:11
  • did you run update-grup after changing config file ?
    – furas
    Commented Dec 22, 2020 at 20:19
  • I did run update-grub. also touching any key makes the system go into a dead end and it never starts anything, just a plain black screen forever.
    – Stephen
    Commented Dec 24, 2020 at 22:20

1 Answer 1

Reset to default
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I have tried editing my /etc/default/grub and funny thing is that despite the setting for GRUB_TIMEOUT_STYLE my menu displays. I have tried hidden, countdown, and commented out. Possibly this is because I have a multi OS system.I don't have access to a single boot linux system right now to test on.

I don't intend to sound smug by mentioning the obvious (don't worry I failed to do it myself), but have you run update-grub or grub-mkconfig after setting GRUB_TIMEOUT_STYLE=menu?

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  • same here: the setting is HIDDEN on another laptop and the menu always shows.
    – Stephen
    Commented Dec 24, 2020 at 22:21

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