Re: error in reading frame-buffer device

[sreangsu acharyya <sreangsua@xxxxxxxxxxxxxxxxxxxxx>]

On Wed, 18 Apr 2001, shubhendu wrote:

> pls have a look at /usr/src/linux-2.2.14/Documentation/fb/framebuffer.txt

sure will.

> The frame buffer devices are also `normal' memory devices, this means, you
> can read and write their contents. 

ok till here, one may need root permissions though

>You can, for example, make a screen
> snapshot by
> 
>   cp /dev/fb0 myfile
> 
> There also can be more than one frame buffer at a time, e.g. if you have a
> graphics card in addition to the built-in hardware. The corresponding
> frame
> buffer devices (/dev/fb0 and /dev/fb1 etc.) work independently.
> 
> Application software that uses the frame buffer device (e.g. the X server)
                                                       ^^^^^^^^^^^^^^^^^^^^  
X will use the framebuffer device if specially asked to do so through the
XF86Config file..

so no conclusions as yet, i have to checkup if the default kernel is
compiled with the framebuffer or atleast has it as a module.

-- sreangsu