Geert Uytterhoeven wrote:

How much memory does the Radeon 9200 have? Probably at least 64 MiB. 
Usually
reading from video memory across PCI/AGP is slow, that's why usually it's
faster for fbcon to scroll by redrawing all characters instead of 
copying video
data.

 

It has 128 MiB.  I didn't realize that reading video memory was that 
slow...

So it's a better idea to not save the frame buffer if it's in KD_TEXT 
mode and just have the fbcon redraw it.  I'll post  my patches to fbtest 
later so you can see what I'm talking about.

John





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