Mon, 2 Mar 2020 15:49:01 +0100
"Michael J. Baars" <mjbaars1977.fedora-users(a)cyberfiber.eu>:
Hi,
I just bought myself a brand new 27" monitor, that came with a
standard VGA cable and no HDMI cable. Apparently VGA is still
considered the standard by Philips. I would like this to be my new
primary display.
I also have a somewhat older Samsung 24" monitor, that is connected
via HDMI to the HDMI port of my computer. I would like this to be my
secondary display.
Let boot things up...
The grub boot menu appears on the secondary screen. Apparently the
HDMI port is considered the primary port by the computer manufacturer.
There's no way to change this in the BIOS.
So I thought, let's make the 24" the primary and the 27" the secondary
display. I can always buy an extra 5m VGA cable to replace my new 5m
HDMI cable.
Let boot things up...
The grub boot menu appears on the primary screen. So far so good.
Waiting for the login prompt, and yes, there it is...
on the secondary screen :)
Try to unplug Your secondary monitor during boot, before GDM starts
and it'll remember the last working display. I really do not know why,
but it worked for me and I discovered that by accident. Let me know if
it still works.
As Graig wrote, Grub menu is not controlled by Gnome, KDE or any other
x-related setting. It is controlled by integrated graphics, which
sometimes is controlled by bios/uefi. When I mixed vga and hdmi
outputs, grub was always displayed trough vga.
--
Łukasz Posadowski