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Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver

From: Stefano Stabellini
Subject: Re: [Qemu-devel] [PATCH] Add QEMU DirectFB display driver
Date: Wed, 19 May 2010 13:06:44 +0100
User-agent: Alpine 2.00 (DEB 1167 2008-08-23)

On Tue, 18 May 2010, Gerd Hoffmann wrote:
> On 05/13/10 17:53, Julian Pidancet wrote:
> > This patch implements a DirectFB driver for QEMU. It allows Qemu to
> > draw a VM graphic output directly in the framebuffer of the host,
> > without having to rely on X11.
> Managed to build it after hacking configure to use pkgconfig.  Patch 
> attached for reference.
> Same bug as SDL on framebuffer:  No sane console switching.  Boot a 
> guest, switch to another (host) virtual terminal, watch qemu continue 
> drawing on your screen.
> Guys, this is simply not acceptable.  You are not alone on the machine. 
>   If I switch away to another virtual terminal I want to see that other 
> terminals content and nothing else.

I completely agree with you.

I think the only way to fix this is to handle VT acquire and release
events ourselves.
At this point I am not sure if it is worth doing it in the DirectFB
frontend or in the SDL frontend directly (making sure we are not
running on X11 first).

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