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I installed Ubuntu 20.04 yesterday, and after I shutdown my pc, I have found that GNU grub 2 menu is not showing at more, so there is completely no video signal until I booted into Ubuntu.

I've collected a lot of resources online and still not being able to enabling dual boot option.

Things I have tried:

  1. Press and hold F11, ESC, Shift before on startup.
  2. Using boot-repair to automatically repairs my grub.
  3. Manually set my default GRUB to windows.
  4. Set my default GRUB to windows in boot-repair software.
  5. I am not sure if this piece of info is helpful, I've managed to change boot manager back to windows bootmgr, but even windows boot manager is not showing during boot, I think this might not be a problem related to ubuntu anymore. But I would still love to hear from people who have encountered same problems. Thanks!

None of these actually helped my to get the GRUB screen showing, so after I starts my pc, the black screen continues until I see Ubuntu.

Could anyone share some thoughts about the problem? What should I do to fix it.

shunfan2
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    Does this answer your question? [Unable to boot into Windows after installing Ubuntu, how to fix?](https://askubuntu.com/questions/217904/unable-to-boot-into-windows-after-installing-ubuntu-how-to-fix) – karel Oct 25 '20 at 02:10
  • @karel, I have tried the top few most voted solutions, not having an effect for me... – shunfan2 Oct 25 '20 at 02:25
  • Yeah in case it is not clear, I've spent some time in the page you mentioned before I posted the question, but Rescatux is an option I have not tried. I will work on it now. – shunfan2 Oct 25 '20 at 03:15

1 Answers1

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I experienced this personally with my laptop. It turned out my laptop didn't support graphical GRUB terminal. Simply set GRUB_TERMINAL=console in the grub file at /etc/default/grub and this should fix the problem.

cryptic
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