Hi,
I usually avoid "rhgb" in the boot command as I like to see what
happens. I did
this editing the /etc/default/grub and removing it and it did work for
a long time.
In the last few kernel updates it did not work and rhgb is in the boot
line.
I grubby-ed it away but the following update put it back. I could not
find any
mention of it in /etc/default/grub or any /etc/grub config files, so
where does
it come from? /boot/grub2/grub.cfg still says:
#
# It is automatically generated by grub2-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
I had this issue and it's referred in a number of bugs on bugzilla, such as:
https://bugzilla.redhat.com/show_bug.cgi?id=1925776
Either edit /etc/kernel/cmdline to remove the option or use grubby that updates both sets
of files and the entries on /boot as well