From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Frysinger <vapier@gentoo.org>
Date: Thu, 15 Mar 2012 19:29:20 +0000
Subject: Re: [Linux-fbdev-devel] [uclinux-dist-devel] [PATCH] [#7001] framebuffer: old image of last app woul
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On Thursday 15 March 2012 15:22:34 Geert Uytterhoeven wrote:
> On Thu, Mar 15, 2012 at 20:08, Mike Frysinger wrote:
> > On Thursday 15 March 2012 05:23:50 Wu, Aaron wrote:
> >> Old image of last application would retain for a while when starting a
> >> new application, this patch clear the frambuffer before displaying
> >> every time the fb is opened.
> >=20
> > i'm not sure the behavior you describe is wrong.  in fact, i'm pretty
> > sure it sounds correct.  if an app writes an image to the framebuffer
> > and then quits, that image should stay there indefinitely until
> > something else opens the framebuffer and draws their own image.
>=20
> Indeed. Else can you no longer make a screenshot using "cat /dev/fb0 >
> file".

ironically, that's one method we've documented for Blackfin platforms :)
http://docs.blackfin.uclinux.org/doku.php?id=3Duclinux-dist:framebuffer
=2Dmike

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