Re: Computer with 1GB and radeonfb

[Martin Sieper <m.si@ngi.de>]

Hi Jurriaan,

thank you for the answer.

On Sat, 31 May 2003 07:42:13 +0200, Jurriaan wrote:
> The first one probably only affects the vesafb-driver. You could adapt
> it to the radeonfb-driver, just search for the correct lines in the
> radeonfb source and change them like the patch changes them.
> There's nothing like booting a kernel whose sources you've changed
> yourself to make you feel the power of open source :-)

I have look in the source radeonfb.c and have insert this:

--- linux-2.4.20/drivers/video/radeonfb.c.orig	2003-06-05 00:06:54.000000000 +0200
+++ linux-2.4.20/drivers/video/radeonfb.c	2003-06-01 12:19:07.000000000 +0200
@@ -1714,6 +1714,15 @@
 		}
 	}
 
+	/*
+	 * Hack for big memory (1GB main RAM) problem:
+	 * 	If the card memory bigger as 64MB
+	 *	so limit it to 64MB!
+	 */
+	if ((rinfo->video_ram / 1024) > 65536) {
+		rinfo->video_ram = 65536 * 1024;
+	}
+
 
 	RTRACE("radeonfb: probed %s %dk videoram\n", (rinfo->ram_type), (rinfo->video_ram/1024));
 

Now the radeonfb works in 8 bit mode but not perfect. There are pixel-trash 
when I scroll up/down. The 16 bit and 32 bit modes works but I have 
wrong colors and the same scroll problem. Any idea?

BTW: my Radeon 9100 has 128 MB RAM

 -Martin



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