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After selecting Ubuntu in the Grub2 bootmenu, Ubuntu suddenly starts boot up, and the first enocounter is logo with a strange random background color. Later, the color changes to the original "normal".

I'm using Ubuntu 18.04 version.

One of suspects https://wiki.ubuntu.com/Plymouth As while these strange backgrounds appear, it is possible to press ESC button and get the log details of the boot.

How can this be traced and fixed? I would like to not have these strange backgrounds even if they appear for 7-10 seconds.

Also, Ubuntu is installed on USB. I plugged the same Ubuntu version into my Desktop computer, and there were no strange background change as it was with my laptop.

Could this be some kind of drivers problem?

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user3789797
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1 Answers1

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From the comments...

Attempt at fix #1:

Edit /etc/default/grub and change

#GRUB_GFXMODE=640x480

to

GRUB_GFXMODE=640x480

Then do

sudo update-grub
reboot

Attempt at fix #2:

Edit /etc/gdm3/custom.conf and change

#WaylandEnable=false

to

WaylandEnable=false

Reboot and see if that helps.

Attempt at fix #3:

In terminal...

sudo update-initramfs -c
reboot

Update #1:

The user is appears to be running on a USB flash drive created with mkusb, with persistence... but they're not able to do fix #3... "read only file system" error. This fix won't work on a USB Live system.

Recommend installing Ubuntu on a standard HDD or SDD.

heynnema
  • 73,649