linux-kernel - Re: Vesafb - need double framebuffer

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Date:	Tue, 3 May 2011 09:52:20 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	suman <vijayendra.suman@...il.com>
Cc:	kraxel@...dbach.in-berlin.de, linux-kernel@...r.kernel.org,
	sankar.r@...sung.com
Subject: Re: Vesafb - need double framebuffer

> I am trying to develop a qt UI for this i need to have another
> framebuffer /dev/fb1, how can i add one more fb, should i use
> framebuffer_alloc function to allocate a new frame buffer. Do you have
> any patch for providing two frame buffers in case of vesafb driver. I
> have tried on net and i failed to find any suitable patch for the

VESA only supports the BIOS initialized framebuffer on a PC - you need a
frame buffer or KMS capable interface specific to whatever chipset you
are using that can initialize the chipset from boot.

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