[Linux-fbdev-users] Dirty lines on the screen

[Krypton <kry...@in...>]

I'm using EPSON S1D113806 framebuffer on a custom SA1110 SBC.
I can boot my kernel-2.4.9-ac10-rmk2-np1
I see the penguin on the CRT screen.
When the root.jffs2 image is loaded I see on the screen dirty lines
when "Configuring dynamic linker" is called.

During boot when char lines scrolling on the console tty0
the system do something same (dirty lines) on the CRT screen.
I think the output tty is going to the video too.
How to avoid that ?

Do you have a suggestion about where to search
if the framebuffer driver is assuming it can grab
any memory it pleases and the rest of the kernel ?
Does exist some file where there are entry points or function pointers for
the fb ?

Thank you 
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krypton8-AT-inwind-DOT-it