Barry Yu writes:
During the startup, when I chose the top line (updated kernel
version)
on the grub menu and then hit return, the round thing at center begins
the progress indication of booting into login window, then then window
is black out in text mode the frozen with the cursor blinking,
completely locked up.
If you're saying that it locks up at the conclusion of the boot process, and
just before you'd normally get the gdm login screen, then try adding
'nomodeset' boot parameter.
Otherwise, if it locks up before the boot normally finishes, press the
escape key as soon as you get the progress indication, and see what happens.