Problem reported by Gerd Knorr:

  (1) boot with vesafb (thats what I'm using, maybe it shows on other
      framebuffers and/or vgacon as well).
  (2) login into one terminal, then type "echo -ne '\033[?17;15;239c'".
      You should have a nice, yellow and *not* blinking cursor block.
      That is what I have in my .profile because I can't stand the
      blinking cursors.
  (3) Switch to another terminal.  The cursor goes into blinking
      underscore mode now (i.e. the default cursor).
  (4) Switch back to the first terminal.  Now you have a yellow block
      with the last two pixel lines (i.e. the underscore) blinking.

This bug is caused by both fbcon_cursor and vt softcursor being active at
the same time.

Fix:

- Disable fbcon_cursor if vt softcursor is active (vc->vc_cursor_type &
  0x10) != 0.

- Recheck/reload fbcon cursor for each vt switch
Signed-off-by: Antonino Daplas <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>