Grub booting windows11 into sleep mode

**dotborg2** · November 1st, 2022

Hi all,
I've just installed ubuntu 22.04 as dual boot on a windows 11 NUC and now selecting windows boot loader from the grub menu sends the box to sleep. I need to press the power button twice (once off and once on) before it will display the windows log-on screen. (Note - it doesn't reboot here, it just wakes up).
Windows will boot fine if selected to be first in my bios (i.e - launching the windows boot manager and not grub), so I'm guessing it's a grub issue.
I have the option of adding ubuntu to the windows boot loader and using that instead, but it would be nice if I could get grub working.
Does anyone have any ideas where I could start looking please? My web searches have come up blank so far.

Thanks in advance

**yancek** · November 1st, 2022

You could try turning off Secure Boot and hibernation in windows to see if that resolves the problem.

**dotborg2** · November 2nd, 2022

All the windows sleep options are off, secure boot and fast boot are also already off - these have no effect.
Interestingly, if I select the windows option in Grub and hit 'e' to bring up the edit screen, I can then just continue to boot into windows from there and it loads fine.
There's just something odd happening with the initial Grub menu.

**tea for one** · November 2nd, 2022

Originally Posted by dotborg2

Interestingly, if I select the windows option in Grub and hit 'e' to bring up the edit screen, I can then just continue to boot into windows from there and it loads fine.

That's a bit unusual.
I would boot into Ubuntu and run:-

Code:

sudo update-grub

Make sure that you have this entry in etc/default/grub

Code:

GRUB_DISABLE_OS_PROBER=false

Any improvement?

**dotborg2** · November 2nd, 2022

No luck with those either I'm afraid, I'm suspecting a hardware issue now to be honest. With a bit of luck I can still exchange it.
The help is much appreciated anyway.
Thanks to all.