Re: Dynamic switch from Console on ttyS0 to fbcon

[Geert Uytterhoeven <geert@linux-m68k.org>]

On Wed, 20 Aug 2008, Amol Lad wrote:
> I'm trying to switch the console from ttyS0 to frame buffer. This is
> achieved using fbcon; you can either link it statically in kernel or
> "modprobe fbcon" (Documentation/fb/fbcon.txt)
> 
> The problem is if "console=ttyS0,115200n8" is passed on u-boot command
> line then the console switch to framebuffer does not happen after
> doing modprobe fbcon.
> 
> If "console=ttyS0,115200n8" argument is not passed on u-boot then the
> console switch happens after modprobe fbcon.
> 
> Any ideas why switch does not happen when "console=" argument is
> passed to the kernel ? (In my application, I need to switch the
> console dynamically to framebuffer from ttyS0. This decision cannot be
> done in u-boot so u-boot will pass "console=ttyS0,115200n8" argument)

Have you tried

    console=ttyS0,115200n8 console=tty0

? This will make console output go to both, and console input will come
from tty0.

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds

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