Remove Amazon WebApp:

sudo apt purge ubuntu-web-launchers

Reduce red in Ubuntu comfort view:

gsettings set org.gnome.settings-daemon.plugins.color night-light-temperature <temperature>

• 4000 Default night light temperature
• 5500 More pleasant and less intense night light temperature
• 6500 Default temperature (night light off)

Remmina RDP folder:

~/.remmina

Disable / blacklist Nvidia nouveau driver:

sudo bash -c "echo blacklist nouveau > /etc/modprobe.d/blacklist-nvidia-nouveau.conf"
sudo bash -c "echo options nouveau modeset=0 >> /etc/modprobe.d/blacklist-nvidia-nouveau.conf"
sudo update-initramfs -u
reboot

Reduce loader time because of grub:

systemd-analyze command shows 10 seconds at loader. Ubuntu installs grub with 10 seconds but hides them.

I reduced it to 1 second and visible.

GRUB_TIMEOUT

GRUB_DISABLE_OS_PROBER = true

sudo update-grub