Grub menu invisible after switch from nvida to amdgpu

[Erdie]

Hi,
I recently moved from my GTX1060 to Radeon RX9060XT and after kernel and "make.conf" changes it works flawless .

There is one remaining issue:

The grub menu is invisible, just a black screen, but functional. So you can use ESC to interrupt the boot process and use the arrow key. Unfortunalty you cannot see where you are.

I am using legacy boot without EFI and my /etc/default/grup is

Code: Select all

GRUB_DISTRIBUTOR="Gentoo"
GRUB_CMDLINE_LINUX=""
GRUB_INITRD_LINUX="/amd-uc.img"
GRUB_TERMINAL_OUTPUT=console
GRUB_DISABLE_LINUX_PARTUUID=false

(I removed all comments)

Has someone an idea how to get a visible boot menu in grub?

Could this have something to do with legacy boot?

[alamahant]

Try adding

Code: Select all

GRUB_TERMINAL_OUTPUT=console
GRUB_GFXMODE=1024x768
GRUB_GFXPAYLOAD_LINUX=keep

[Erdie]

Try adding

Code: Select all

GRUB_TERMINAL_OUTPUT=console
GRUB_GFXMODE=1024x768
GRUB_GFXPAYLOAD_LINUX=keep

I did it but it does not help. In the meantime I figured our that this is an issue with my current legacy boot, which is not more supported by the graphics card. When i try to boot a usb gentoo live system, grub is even invisible unless I switch the bios option to UEFI only. Once this is done, the live system comes up with a visible grub menu.

This means I will have to migrate from MBR to UEFI boot. Since I installed my gentoo about 15 years ago, UEFI wasn´t the preferred method at that time. Now I will wait for my next vacation time and start with migration