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I recently bought a HP Spectre x360 laptop with Windows 10 on it. I manually created a partition for it using Windows. I then installed Ubuntu 18.04.02 by choosing the 'Install Ubuntu alongside Windows' option. I checked that Windows and Ubuntu both still work well.

My problem is that when I turn the computer on, it shows the GRUB menu and freezes. No key commands help. Now I can only boot either OS by using F9 - Change boot order.

Things I have tried: Ensuring that Legacy Boot is off, Secure boot off, and fast boot off Reinstalling GRUB Running boot-repair

Boot-repair generated the info shown in this link: http://paste.ubuntu.com/p/VG5gZj83D4/

I am aware that this question is similar to this one: Grub freezes when naturally booting, but works when selected from EFI menu, but that person seems not to have found a solution.

I think it could have something to do with the way I partitioned the space for Ubuntu but I have no idea how to fix it.

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    It looks like Windows may be hibernated or fast start up is on. askubuntu.com/questions/843153/… Directly Boot Windows from UEFI boot menu to turn off fast start up. HP Pavillion X360 13-a220nw ubuntuforums.org/showthread.php?t=2359510 HP needs UEFI update & may need you to set boot order in UEFI, not with efibootmgr or grub. askubuntu.com/questions/61396/… You may need video mode in grub to match system video using GRUB_GFXMODE= to your correct X by Y size. See Boot-Repair advanced options. – oldfred Jul 16 at 19:43
  • thanks for your suggestions @oldfred. I am sure that hibernate and fast boot are disabled. I don't think it's a UEFI issue because I was able to install Ubuntu and it boots via the Boot Options Manager without any noticeable error. The only issue is the GRUB screen itself. I also tried changing GRUB_GFXMODE, and the problem is still there. – edelia Jul 17 at 1:46
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So, I seem to have fixed my own problem. I was under the impression that Legacy boot should be off, but after enabling it, the issue seems to have disappeared. I haven't noticed any other adverse effects since.

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