Restoring the usual graphical boot panel

[Paul Smith]

Dear All,

After having installed the NVidia proprietary drivers, the usual boot
panel with a ball with an "F" in the middle does not show up anymore;
now, I get a bar at the bottom of the screen, which increases its
length as the booting activity is progressing. Is it possible to get
back the usual graphical boot panel?

Thanks in advance,

Paul