Need to reboot twice for POST & grub menu

[Shibblet]

It looks to me like your computer screen goes into Standby mode and stays black while the GRUB menu comes up, and then selects the default (or last) choice after the timer runs out.

The monitor doesn’t recognize the signal quickly enough during that process. I have the exact same problem with my ASUS TUF Monitor when dual booting.

Try turning off the timer entirely, and make it wait for a selection. A way of testing this, is after the “No Signal”, when the screen goes black (standby mode), try tapping the up and down arrows a couple of times… that disables the timer on the GRUB selection by selecting a different option.

[Nachlese]

Yeah - Cinnamon edition
you selected … something
then it restarts

I can’t see what’s wrong here.

[soundofthunder]

@m4jq

@Hanzel

Could there be some conflict in witch is chosen/active/used at boot time from the different OS’s that are on the disk?

This earlier note from @Hanzel has prompted me to wonder which $ESP you have as default.

Usually, when multibooting with Windows, it’s best to set the UEFI bootloader on the Manjaro disk’s $ESP as the default.

(Windows is then detected by os-prober and the boot typically runs smoothly).

This can be done by choosing Manjaro as first in boot order in your UEFI BIOS.

Is yours configured this way?

The order of your NVMe disks suggests it is not:

@m4jq

nvme1n1                                                                               
├─nvme1n1p1 vfat      FAT32       846F-30F7                                           
├─nvme1n1p2                                                                           
├─nvme1n1p3 BitLocker 2                                                               
├─nvme1n1p4 ntfs                  769E193D9E18F779                                    
├─nvme1n1p5 BitLocker 2                                                               
└─nvme1n1p6 ntfs            Share 40EE28EBEE28DB44                                    
nvme0n1                                                                               
├─nvme0n1p1 vfat      FAT32       F539-6676                             510,7M     0% /boot/efi
├─nvme0n1p2 ext4      1.0         5d538e50-a855-4622-a19a-66445f2be3d6     65G    28% /
└─nvme0n1p3 ext4      1.0         29805870-7077-4ba5-8f9a-9aad706ce81f  310,6G    58% /home

[Ben]

@Mirdarthos

However, I recommend using the install-grub package from the repository.

This is interesting - perhaps I should replace instances of ‘update-grub’ to ‘install-grub’ in my tutorial:

Grub-Customiser

Grub-Customizer See also: Grub Arch Wiki Grub customizer is a contentious subject - however, the general consensus is that it represents a bad example of an attractive GUI for nOObs. It is potentially dangerous and completely unnecessary. It adds layers of complexity to the bootloader, which is critical to the system. It does not do anything that can be achieved by other means. Despite these concerns, the fact that some people use it without encountering problems. Tips The main confi…

[m4jq]

@Nachlese

then it restarts

I can’t see what’s wrong here.

yeah, but there is no POST screen and GRUB menu on first reboot. so i cannot choose windows from GRUB menu or even enter BIOS setup, it’s appear on second boot.

@soundofthunder

I just noticed I’d already given you the above information. Can we presume you didn’t bother to read it the first time?

i understand. enabling or disabling Fast Startup (hibernation) on windows should in no way affect how Linux reboots. It’s disabled anyway.

i think i started in the wrong way. forget GRUB , let’s focus on POST (power-on self test)

Before I finally give up I will write it again in a different way.

The computer is off → I boot the computer → POST screen appears with ASUS ROG logo (I can then go into bios settings) → linux loads. then I reboot and there is no POST screen anymore but linux starts right away, I give another reboot and I have a POST screen and then a menu appears with system selection (GRUB). I shut down the computer.

Linux reboot

The computer is shut down → I start the computer → POST screen (power-on self test) screen appears with ASUS ROG logo (I can then enter bios settings), from GRUB menu I select WIndows - windows loads. I give restart and POST screen appears and then GRUB menu appears and I can choose which system I want to boot. and so every time unlike Linux where I have to reboot twice.

Windows reboot

question - why i don’t have POST screen on linux after every reboot and on windows i do?

i can also live with it. it is not terribly inconvenient.

[soundofthunder]

@m4jq

i understand. enabling or disabling Fast Startup (hibernation) on windows should in no way affect how Linux reboots.

Clearly, you still don’t understand. Still, it’s good that it’s disabled (not every Windows ships with it enabled, which is why we have to ask).

---

You might find the following link useful (parts of it, at least, as you’re already installed); a guide for those wishing to multiboot Linux and Windows; and avoid some of the pitfalls;

• [Multiboot] Windows and Linux on Separate Disks

Good luck.

[Shibblet]

@m4jq

question - why i don’t have POST screen on linux after every reboot and on windows i do?

Did you try tapping the up and down arrows when the screen goes black after the ROG POST screen? Did you change the timer in GRUB?

[m4jq]

after i noticed that on reset there is the same symptom i tried alt+ctrl+del a couple of times as the systems selection menu is displayed and one time it doesn’t show POST and the menu, as i tried press the keys then i have interrupted the GRUB menu countdown and after enter it goes on. for some reason the graphics or the monitor has a problem on startup. unfortunately i don’t have DP cable to check on another output from the graphics card…

which means i am almost sure now that it is not a Manjaro/Linux issue.

Thanks for trying to help solve the problem.