Xubuntu 19.10 Boot: how to prevent vendors logo from showing all the time?

I recently bought a cheap laptop from Asus (VivoBook S15 X530UF) and I got everything to work quickly as I wanted with Xubuntu 19.10 (except for the laptop lid behavior which I will leave for another thread). During the boot process, with the kernel version 5.3.0-24, the Asus logo appeared only before the GRUB, followed by the plymouth and then the lightdm greeter. And that was it, just like I wanted. Except for a console message regarding the swap partition location which I made disappear after creating a “splash” file with “FRAMEBUFFER=y” in “/etc/initramfs-tools/conf.d”. After the last kernel image update ( 5.3.0-26) the Asus logo started tho show between everything: between grub and the plymouth, between the plymouth and the greeter and even when shutting down, before the plymouth – wich doesn’t happened when booting with version 5.3.0-24. I just don’t like that “ASUS in search of incredible” logo showing all the time. So, after some search I’ve have found this thread from Archlinux wiki and after manually disabling deferred takeover by editing the grub entry:

linux   /boot/vmlinuz-5.3.0-26-generic root=UUID=4b59be32-68e7-4a01-98c8-143e880579ca ro  quiet splash $vt_handoff  fbcon=nodefer

it stop showing before the greeter and, during shutdown, but it keeps showing between the GRUB and the plymouth, during the boot process. Why, what am I missing here? I would like to understand this a little bit more and, if possible, to have the logo only when I start the computer, before the GRUB menu.

Solution 1:

This looks like the kernel falling back to the vendor logo. I was able to stop the logo from appearing between GRUB and Plymouth in Fedora by adding video=efifb:nobgrt to GRUB_CMDLINE_LINUX in /etc/default/grub. Considering that it is a Linux kernel console parameter, it should work for Ubuntu too. (Don't forget to run sudo update-grub after changing /etc/default/grub.)