From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: Re: Dynamic switch from Console on ttyS0 to fbcon Date: Wed, 20 Aug 2008 08:51:29 +0200 (CEST) Message-ID: References: <8c675e9b0808192118g598fc380kf3cb3aa22cf969c8@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.92] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1KVhXd-0002QK-WC for linux-fbdev-devel@lists.sourceforge.net; Tue, 19 Aug 2008 23:51:38 -0700 Received: from monty.telenet-ops.be ([195.130.132.56]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1KVhXc-00083L-KR for linux-fbdev-devel@lists.sourceforge.net; Tue, 19 Aug 2008 23:51:38 -0700 In-Reply-To: <8c675e9b0808192118g598fc380kf3cb3aa22cf969c8@mail.gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Amol Lad Cc: linux-fbdev-devel@lists.sourceforge.net 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 ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/