Re: how can I use open-source (Xorg) radeon driver?

[Camaleón <noelamac@gmail.com>]

On Sat, 28 Apr 2012 14:12:05 +0100, Matej Košík wrote:

> I have installed Debian (Squeeze) on my desktop.
> 
> I have enabled desktop environment.
> 
> By default Xorg uses VESA driver.

That means there's a problem. Radeon driver should be loaded 
automatically with no user interaction.
 
> I have the following video card (output from lpsci):
> 
>   01:00.0 VGA compatible controller:
>   ATI Technologies Inc NI Caicos [AMD RADEON HD 6450]

(...)

That explains it all :-)

There was a recent thread for a similar card (with a "northern islands" 
based chipset) and facing a similar problem that you're describing:

http://lists.debian.org/debian-user/2012/04/msg01548.html

In brief, most sure is that you're using an old version of the Xorg 
xserver and kernel that cannot handle you new VGA card ;-(

Greetings,

-- 
Camaleón