radeon, apertures & memory mapping

[Michel Dänzer]

On Mon, 2005-03-14 at 18:12 +1100, Benjamin Herrenschmidt wrote:
> On Sun, 2005-03-13 at 23:28 -0500, Michel Dänzer wrote:
> > On Sun, 2005-03-13 at 17:43 +1100, Benjamin Herrenschmidt wrote:
> > > 
> > > And finally, I want to blank the screen (using the accel engine) before
> > > setting the new mode, so that we come out "clean" of the mode setting
> > > (without ugly artifact), and I will probably clean both fb's (simpler).
> > 
> > That would break X with UseFBDev.
> 
> How so ?

X assumes that the framebuffer (as in video RAM) contents are preserved
on mode switches.


-- 
Earthling Michel Dänzer      |     Debian (powerpc), X and DRI developer
Libre software enthusiast    |   http://svcs.affero.net/rm.php?r=daenzer