-------- Original Message --------
Subject: Re: Suppress all boot output (framebuffer?) - embedded linux
distro
Date: Tue, 19 Feb 2013 22:52:25 +0100
From: Ivan Nikolaev <[email protected]>
To: Mulyadi Santosa <[email protected]>
On Tue 19 Feb 2013 08:00:52 PM CET, Mulyadi Santosa wrote:
On Tue, Feb 19, 2013 at 8:50 PM, Ivan Nikolaev <[email protected]> wrote:
I'm developing an ubuntu 12.04 (LTS) based embedded distribution, which
basically is a normal ubuntu stripped down to bare minimal packages,
which runs a minimal XOrg server with one single full-screen
application. What I want is to suppress every single char of console
output since the bootloader passed control to the kernel, and possibly
show instead of that some static text and/or image. What I thought is to
try to disable printk-s and to write some kind of patch which uses the
framebuffer to show the logo. Is that possible/difficult? Can you
eventually explain where I should dig?
IIRC, isn't that what ubuntu 12.04 does during boot stage by default ?
i mean, no boot message shown....
Yes, I guess Ubuntu version of GRUB is slightly modified, and it uses
Plymouth to provide that "nice" (and buggy on some machines) graphic
bootsplash. What I need is to avoid virtual consoles at all, also, I
need one static image visualized by framebuffer, which then smoothly
passes to my GUI app. Even more, being my app Qt based, I think about
throwing away the Xorg server and use Qt's support for framebuffer. So,
it will probably do a nice job. Hope I've explained what I need. For
example, on Android devices how this thing is done? You turn on the
device, and then the loading animation is displayed for a while.
Everything goes smooth, no glitches, and I suppose, there's no Plymouth
:)
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